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[dfsan] Enable origin tracking with fast8 mode 

All related instrumentation tests have been updated.

Reviewed By: stephan.yichao.zhao

Differential Revision: https://reviews.llvm.org/D100903
This commit is contained in:
George Balatsouras 2021-04-20 15:31:58 -07:00
parent 031c40dc3c
commit 79b5280a6c
14 changed files with 657 additions and 553 deletions
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20
llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
View File

@ -505,6 +505,10 @@ class DataFlowSanitizer {
/// Returns whether fast8 or fast16 mode has been specified.
bool hasFastLabelsEnabled();
/// Returns whether the given load byte size is amenable to inlined
/// optimization patterns.
bool hasLoadSizeForFastPath(uint64_t Size);
/// Returns whether the pass tracks origins. Support only fast16 mode in TLS
/// ABI mode.
bool shouldTrackOrigins();
@ -883,10 +887,15 @@ bool DataFlowSanitizer::hasFastLabelsEnabled() {
return HasFastLabelsEnabled;
}
bool DataFlowSanitizer::hasLoadSizeForFastPath(uint64_t Size) {
uint64_t ShadowSize = Size * ShadowWidthBytes;
return ShadowSize % 8 == 0 || ShadowSize == 4;
}
bool DataFlowSanitizer::shouldTrackOrigins() {
static const bool ShouldTrackOrigins =
ClTrackOrigins && getInstrumentedABI() == DataFlowSanitizer::IA_TLS &&
ClFast16Labels;
hasFastLabelsEnabled();
return ShouldTrackOrigins;
}
@ -2037,11 +2046,7 @@ bool DFSanFunction::useCallbackLoadLabelAndOrigin(uint64_t Size,
return false;
const Align Alignment = llvm::assumeAligned(InstAlignment.value());
if (Alignment >= MinOriginAlignment &&
Size % (64 / DFS.ShadowWidthBits) == 0)
return false;
return true;
return Alignment < MinOriginAlignment || !DFS.hasLoadSizeForFastPath(Size);
}
std::pair<Value *, Value *> DFSanFunction::loadFast16ShadowFast(
@ -2284,8 +2289,7 @@ std::pair<Value *, Value *> DFSanFunction::loadShadowOrigin(Value *Addr,
return {combineShadows(Load, Load1, Pos), Origin};
}
}
uint64_t ShadowSize = Size * DFS.ShadowWidthBytes;
bool HasSizeForFastPath = ShadowSize % 8 == 0 || ShadowSize == 4;
bool HasSizeForFastPath = DFS.hasLoadSizeForFastPath(Size);
bool HasFastLabelsEnabled = DFS.hasFastLabelsEnabled();
if (HasFastLabelsEnabled && HasSizeForFastPath)

4
llvm/test/Instrumentation/DataFlowSanitizer/atomics.ll
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@ -1,5 +1,7 @@
; RUN: opt < %s -dfsan -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK16
; RUN: opt < %s -dfsan -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK_ORIGIN
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -dfsan-instrument-with-call-threshold=0 -S | FileCheck %s --check-prefixes=CHECK,CHECK_ORIGIN
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK16,CHECK_ORIGIN
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-instrument-with-call-threshold=0 -S | FileCheck %s --check-prefixes=CHECK,CHECK16,CHECK_ORIGIN
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"

2
llvm/test/Instrumentation/DataFlowSanitizer/basic.ll
View File

@ -1,6 +1,6 @@
; RUN: opt < %s -dfsan -S | FileCheck %s --check-prefixes=CHECK,CHECK_NO_ORIGIN -DSHADOW_MASK=-123145302310913
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK_ORIGIN -DSHADOW_MASK=-123145302310913
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK_NO_ORIGIN -DSHADOW_MASK=-105553116266497
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK,CHECK_ORIGIN -DSHADOW_MASK=-105553116266497
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

145
llvm/test/Instrumentation/DataFlowSanitizer/origin_abilist.ll
View File

@ -1,7 +1,12 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -dfsan-abilist=%S/Inputs/abilist.txt -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-abilist=%S/Inputs/abilist.txt -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define i32 @discard(i32 %a, i32 %b) {
ret i32 0
}
@ -113,9 +118,9 @@ define void @call_custom_without_ret(i32 %a, i32 %b) {
; CHECK: @"dfs$call_custom_without_ret"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: call void @__dfso_custom_without_ret(i32 %a, i32 %b, i16 zeroext [[AS]], i16 zeroext [[BS]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: call void @__dfso_custom_without_ret(i32 %a, i32 %b, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: ret void
call void @custom_without_ret(i32 %a, i32 %b)
@ -127,13 +132,13 @@ define i32 @call_custom_with_ret(i32 %a, i32 %b) {
; CHECK: %originreturn = alloca i32, align 4
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %labelreturn = alloca i16, align 2
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: {{.*}} = call i32 @__dfso_custom_with_ret(i32 %a, i32 %b, i16 zeroext [[AS]], i16 zeroext [[BS]], i16* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK: [[RS:%.*]] = load i16, i16* %labelreturn, align 2
; CHECK: %labelreturn = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: {{.*}} = call i32 @__dfso_custom_with_ret(i32 %a, i32 %b, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK: [[RS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* %labelreturn, align [[#SBYTES]]
; CHECK: [[RO:%.*]] = load i32, i32* %originreturn, align 4
; CHECK: store i16 [[RS]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
%r = call i32 @custom_with_ret(i32 %a, i32 %b)
@ -145,16 +150,16 @@ define void @call_custom_varg_without_ret(i32 %a, i32 %b) {
; CHECK: %originva = alloca [1 x i32], align 4
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %labelva = alloca [1 x i16], align 2
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i16], [1 x i16]* %labelva, i32 0, i32 0
; CHECK: store i16 [[AS]], i16* [[VS0]], align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i16], [1 x i16]* %labelva, i32 0, i32 0
; CHECK: %labelva = alloca [1 x i[[#SBITS]]], align [[#SBYTES]]
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i[[#SBITS]]], [1 x i[[#SBITS]]]* %labelva, i32 0, i32 0
; CHECK: store i[[#SBITS]] [[AS]], i[[#SBITS]]* [[VS0]], align [[#SBYTES]]
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i[[#SBITS]]], [1 x i[[#SBITS]]]* %labelva, i32 0, i32 0
; CHECK: [[VO0:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* %originva, i32 0, i32 0
; CHECK: store i32 [[AO]], i32* [[VO0]], align 4
; CHECK: [[VO0:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* %originva, i32 0, i32 0
; CHECK: call void (i32, i32, i16, i16, i16*, i32, i32, i32*, ...) @__dfso_custom_varg_without_ret(i32 %a, i32 %b, i16 zeroext [[AS]], i16 zeroext [[BS]], i16* [[VS0]], i32 zeroext [[AO]], i32 zeroext [[BO]], i32* [[VO0]], i32 %a)
; CHECK: call void (i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*, ...) @__dfso_custom_varg_without_ret(i32 %a, i32 %b, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* [[VS0]], i32 zeroext [[AO]], i32 zeroext [[BO]], i32* [[VO0]], i32 %a)
; CHECK-NEXT: ret void
call void (i32, i32, ...) @custom_varg_without_ret(i32 %a, i32 %b, i32 %a)
@ -167,20 +172,20 @@ define i32 @call_custom_varg_with_ret(i32 %a, i32 %b) {
; CHECK: %originva = alloca [1 x i32], align 4
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %labelreturn = alloca i16, align 2
; CHECK: %labelva = alloca [1 x i16], align 2
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i16], [1 x i16]* %labelva, i32 0, i32 0
; CHECK: store i16 [[BS]], i16* [[VS0]], align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i16], [1 x i16]* %labelva, i32 0, i32 0
; CHECK: %labelreturn = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK: %labelva = alloca [1 x i[[#SBITS]]], align [[#SBYTES]]
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i[[#SBITS]]], [1 x i[[#SBITS]]]* %labelva, i32 0, i32 0
; CHECK: store i[[#SBITS]] [[BS]], i[[#SBITS]]* [[VS0]], align [[#SBYTES]]
; CHECK: [[VS0:%.*]] = getelementptr inbounds [1 x i[[#SBITS]]], [1 x i[[#SBITS]]]* %labelva, i32 0, i32 0
; CHECK: [[VO0:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* %originva, i32 0, i32 0
; CHECK: store i32 [[BO]], i32* [[VO0]], align 4
; CHECK: [[VO0:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* %originva, i32 0, i32 0
; CHECK: {{.*}} = call i32 (i32, i32, i16, i16, i16*, i16*, i32, i32, i32*, i32*, ...) @__dfso_custom_varg_with_ret(i32 %a, i32 %b, i16 zeroext [[AS]], i16 zeroext [[BS]], i16* [[VS0]], i16* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* [[VO0]], i32* %originreturn, i32 %b)
; CHECK: [[RS:%.*]] = load i16, i16* %labelreturn, align 2
; CHECK: {{.*}} = call i32 (i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i[[#SBITS]]*, i32, i32, i32*, i32*, ...) @__dfso_custom_varg_with_ret(i32 %a, i32 %b, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* [[VS0]], i[[#SBITS]]* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* [[VO0]], i32* %originreturn, i32 %b)
; CHECK: [[RS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* %labelreturn, align [[#SBYTES]]
; CHECK: [[RO:%.*]] = load i32, i32* %originreturn, align 4
; CHECK: store i16 [[RS]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
%r = call i32 (i32, i32, ...) @custom_varg_with_ret(i32 %a, i32 %b, i32 %b)
@ -192,13 +197,13 @@ define i32 @call_custom_cb_with_ret(i32 %a, i32 %b) {
; CHECK: %originreturn = alloca i32, align 4
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %labelreturn = alloca i16, align 2
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: {{.*}} = call i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i16, i16, i16*, i32, i32, i32*)* @"dfst0$custom_cb_with_ret", i8* bitcast (i32 (i32, i32)* @"dfs$cb_with_ret" to i8*), i32 %a, i32 %b, i16 zeroext 0, i16 zeroext [[AS]], i16 zeroext [[BS]], i16* %labelreturn, i32 zeroext 0, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK: [[RS:%.*]] = load i16, i16* %labelreturn, align 2
; CHECK: %labelreturn = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: {{.*}} = call i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*)* @"dfst0$custom_cb_with_ret", i8* bitcast (i32 (i32, i32)* @"dfs$cb_with_ret" to i8*), i32 %a, i32 %b, i[[#SBITS]] zeroext 0, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* %labelreturn, i32 zeroext 0, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK: [[RS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* %labelreturn, align [[#SBYTES]]
; CHECK: [[RO:%.*]] = load i32, i32* %originreturn, align 4
; CHECK: store i16 [[RS]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
%r = call i32 @custom_cb_with_ret(i32 (i32, i32)* @cb_with_ret, i32 %a, i32 %b)
@ -209,9 +214,9 @@ define void @call_custom_cb_without_ret(i32 %a, i32 %b) {
; CHECK: @"dfs$call_custom_cb_without_ret"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK: call void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i16, i16, i32, i32)* @"dfst0$custom_cb_without_ret", i8* bitcast (void (i32, i32)* @"dfs$cb_without_ret" to i8*), i32 %a, i32 %b, i16 zeroext 0, i16 zeroext [[AS]], i16 zeroext [[BS]], i32 zeroext 0, i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK: call void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i32, i32)* @"dfst0$custom_cb_without_ret", i8* bitcast (void (i32, i32)* @"dfs$cb_without_ret" to i8*), i32 %a, i32 %b, i[[#SBITS]] zeroext 0, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i32 zeroext 0, i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: ret void
call void @custom_cb_without_ret(void (i32, i32)* @cb_without_ret, i32 %a, i32 %b)
@ -220,29 +225,29 @@ define void @call_custom_cb_without_ret(i32 %a, i32 %b) {
; CHECK: define i32 @discardg(i32 %0, i32 %1)
; CHECK: [[R:%.*]] = call i32 @"dfs$g"
; CHECK-NEXT: %_dfsret = load i16, i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK-NEXT: %_dfsret = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: %_dfsret_o = load i32, i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: ret i32 [[R]]
; CHECK: define linkonce_odr void @"dfso$custom_without_ret"(i32 %0, i32 %1)
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: call void @__dfso_custom_without_ret(i32 %0, i32 %1, i16 zeroext [[AS]], i16 zeroext [[BS]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: call void @__dfso_custom_without_ret(i32 %0, i32 %1, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: ret void
; CHECK: define linkonce_odr i32 @"dfso$custom_with_ret"(i32 %0, i32 %1)
; CHECK: %originreturn = alloca i32, align 4
; CHECK-NEXT: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: %labelreturn = alloca i16, align 2
; CHECK-NEXT: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: [[R:%.*]] = call i32 @__dfso_custom_with_ret(i32 %0, i32 %1, i16 zeroext [[AS]], i16 zeroext [[BS]], i16* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK-NEXT: [[RS:%.*]] = load i16, i16* %labelreturn, align 2
; CHECK-NEXT: %labelreturn = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[R:%.*]] = call i32 @__dfso_custom_with_ret(i32 %0, i32 %1, i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* %labelreturn, i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK-NEXT: [[RS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* %labelreturn, align [[#SBYTES]]
; CHECK-NEXT: [[RO:%.*]] = load i32, i32* %originreturn, align 4
; CHECK-NEXT: store i16 [[RS]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: ret i32 [[R]]
@ -259,15 +264,15 @@ define void @call_custom_cb_without_ret(i32 %a, i32 %b) {
; CHECK-NEXT: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[CO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: %labelreturn = alloca i16, align 2
; CHECK-NEXT: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: [[CS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: %labelreturn = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[C:%.*]] = bitcast i32 (i32, i32)* %0 to i8*
; CHECK-NEXT: [[R:%.*]] = call i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i16, i16, i16*, i32, i32, i32*)* @"dfst0$custom_cb_with_ret", i8* [[C]], i32 %1, i32 %2, i16 zeroext [[CS]], i16 zeroext [[AS]], i16 zeroext [[BS]], i16* %labelreturn, i32 zeroext [[CO]], i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK-NEXT: [[RS:%.*]] = load i16, i16* %labelreturn, align 2
; CHECK-NEXT: [[R:%.*]] = call i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*)* @"dfst0$custom_cb_with_ret", i8* [[C]], i32 %1, i32 %2, i[[#SBITS]] zeroext [[CS]], i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i[[#SBITS]]* %labelreturn, i32 zeroext [[CO]], i32 zeroext [[AO]], i32 zeroext [[BO]], i32* %originreturn)
; CHECK-NEXT: [[RS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* %labelreturn, align [[#SBYTES]]
; CHECK-NEXT: [[RO:%.*]] = load i32, i32* %originreturn, align 4
; CHECK-NEXT: store i16 [[RS]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: ret i32 [[R]]
@ -275,41 +280,41 @@ define void @call_custom_cb_without_ret(i32 %a, i32 %b) {
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[CO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: [[CS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: [[C:%.*]] = bitcast void (i32, i32)* %0 to i8*
; CHECK-NEXT: call void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i16, i16, i32, i32)* @"dfst0$custom_cb_without_ret", i8* [[C]], i32 %1, i32 %2, i16 zeroext [[CS]], i16 zeroext [[AS]], i16 zeroext [[BS]], i32 zeroext [[CO]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: call void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i32, i32)* @"dfst0$custom_cb_without_ret", i8* [[C]], i32 %1, i32 %2, i[[#SBITS]] zeroext [[CS]], i[[#SBITS]] zeroext [[AS]], i[[#SBITS]] zeroext [[BS]], i32 zeroext [[CO]], i32 zeroext [[AO]], i32 zeroext [[BO]])
; CHECK-NEXT: ret void
; CHECK: declare void @__dfso_custom_without_ret(i32, i32, i16, i16, i32, i32)
; CHECK: declare void @__dfso_custom_without_ret(i32, i32, i[[#SBITS]], i[[#SBITS]], i32, i32)
; CHECK: declare i32 @__dfso_custom_with_ret(i32, i32, i16, i16, i16*, i32, i32, i32*)
; CHECK: declare i32 @__dfso_custom_with_ret(i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*)
; CHECK: declare i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i16, i16, i16*, i32, i32, i32*)*, i8*, i32, i32, i16, i16, i16, i16*, i32, i32, i32, i32*)
; CHECK: declare i32 @__dfso_custom_cb_with_ret(i32 (i32 (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*)*, i8*, i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32, i32*)
; CHECK: define linkonce_odr i32 @"dfst0$custom_cb_with_ret"(i32 (i32, i32)* %0, i32 %1, i32 %2, i16 %3, i16 %4, i16* %5, i32 %6, i32 %7, i32* %8)
; CHECK: define linkonce_odr i32 @"dfst0$custom_cb_with_ret"(i32 (i32, i32)* %0, i32 %1, i32 %2, i[[#SBITS]] %3, i[[#SBITS]] %4, i[[#SBITS]]* %5, i32 %6, i32 %7, i32* %8)
; CHECK: store i32 %6, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: store i16 %3, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] %3, i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: store i32 %7, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: store i16 %4, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] %4, i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: %9 = call i32 %0(i32 %1, i32 %2)
; CHECK-NEXT: %_dfsret = load i16, i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align 2
; CHECK-NEXT: %_dfsret = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: %_dfsret_o = load i32, i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: store i16 %_dfsret, i16* %5, align 2
; CHECK-NEXT: store i[[#SBITS]] %_dfsret, i[[#SBITS]]* %5, align [[#SBYTES]]
; CHECK-NEXT: store i32 %_dfsret_o, i32* %8, align 4
; CHECK-NEXT: ret i32 %9
; CHECK: declare void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i16, i16, i32, i32)*, i8*, i32, i32, i16, i16, i16, i32, i32, i32)
; CHECK: declare void @__dfso_custom_cb_without_ret(void (void (i32, i32)*, i32, i32, i[[#SBITS]], i[[#SBITS]], i32, i32)*, i8*, i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]], i32, i32, i32)
; CHECK: define linkonce_odr void @"dfst0$custom_cb_without_ret"(void (i32, i32)* %0, i32 %1, i32 %2, i16 %3, i16 %4, i32 %5, i32 %6)
; CHECK: define linkonce_odr void @"dfst0$custom_cb_without_ret"(void (i32, i32)* %0, i32 %1, i32 %2, i[[#SBITS]] %3, i[[#SBITS]] %4, i32 %5, i32 %6)
; CHECK: store i32 %5, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: store i16 %3, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] %3, i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: store i32 %6, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: store i16 %4, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] %4, i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK-NEXT: call void %0(i32 %1, i32 %2)
; CHECK-NEXT: ret void
; CHECK: declare void @__dfso_custom_varg_without_ret(i32, i32, i16, i16, i16*, i32, i32, i32*, ...)
; CHECK: declare void @__dfso_custom_varg_without_ret(i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i32, i32, i32*, ...)
; CHECK: declare i32 @__dfso_custom_varg_with_ret(i32, i32, i16, i16, i16*, i16*, i32, i32, i32*, i32*, ...)
; CHECK: declare i32 @__dfso_custom_varg_with_ret(i32, i32, i[[#SBITS]], i[[#SBITS]], i[[#SBITS]]*, i[[#SBITS]]*, i32, i32, i32*, i32*, ...)

7
llvm/test/Instrumentation/DataFlowSanitizer/origin_cached_shadows.ll
View File

@ -1,4 +1,5 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
;
; %15 and %17 have the same key in shadow cache. They should not reuse the same
; shadow because their blocks do not dominate each other. Origin tracking
@ -14,7 +15,7 @@ target triple = "x86_64-unknown-linux-gnu"
define void @cached_shadows(double %0) {
; CHECK: @"dfs$cached_shadows"
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN:2]]
; CHECK: [[L1:[0-9]+]]:
; CHECK: {{.*}} = phi i[[#SBITS]]
; CHECK: {{.*}} = phi i32
@ -39,7 +40,7 @@ define void @cached_shadows(double %0) {
; CHECK: [[S_L6:%.*]] = or i[[#SBITS]]
; CHECK: [[AS_NE_L6:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK: [[O_L6:%.*]] = select i1 [[AS_NE_L6]], i32 [[AO]], i32 [[O_L1]]
; CHECK: [[V_L6:%.*]] = fadd double %24, %0
; CHECK: [[V_L6:%.*]] = fadd double [[V_L1]], %0
; CHECK: br label %[[L7]]
; CHECK: [[L7]]:
; CHECK: [[S_L7]] = phi i[[#SBITS]] [ [[S_L3]], %[[L3]] ], [ [[S_L1]], %[[L2]] ], [ [[S_L6]], %[[L6]] ]

13
llvm/test/Instrumentation/DataFlowSanitizer/origin_call.ll
View File

@ -1,7 +1,12 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define i1 @arg_overflow(
i1 %a0, i1 %a1, i1 %a2, i1 %a3, i1 %a4, i1 %a5, i1 %a6, i1 %a7, i1 %a8, i1 %a9,
i1 %a10, i1 %a11, i1 %a12, i1 %a13, i1 %a14, i1 %a15, i1 %a16, i1 %a17, i1 %a18, i1 %a19,
@ -36,8 +41,8 @@ i1 %a200
define i1 @param_overflow(i1 %a) {
; CHECK: @"dfs$param_overflow"
; CHECK: store i32 %1, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 199), align 4
; CHECK-NEXT: store i16 %2, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 398) to i16*), align 2
; CHECK-NEXT: store i16 %2, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 400) to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] %2, i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 398) to i[[#SBITS]]*), align 2
; CHECK-NEXT: store i[[#SBITS]] %2, i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 400) to i[[#SBITS]]*), align 2
; CHECK-NEXT: %r = call i1 @"dfs$arg_overflow"
; CHECK: %_dfsret_o = load i32, i32* @__dfsan_retval_origin_tls, align 4
; CHECK: store i32 %_dfsret_o, i32* @__dfsan_retval_origin_tls, align 4
@ -72,7 +77,7 @@ declare void @foo(i1 %a)
define void @param_with_zero_shadow() {
; CHECK: @"dfs$param_with_zero_shadow"
; CHECK-NEXT: store i16 0, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; CHECK-NEXT: call void @"dfs$foo"(i1 true)
call void @foo(i1 1)

422
llvm/test/Instrumentation/DataFlowSanitizer/origin_ldst.ll
View File

@ -1,422 +0,0 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK_META,CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-combine-pointer-labels-on-load=false -S | FileCheck %s --check-prefixes=CHECK_META,NO_COMBINE_LOAD_PTR
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-combine-pointer-labels-on-store=true -S | FileCheck %s --check-prefixes=CHECK_META,COMBINE_STORE_PTR
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK_META: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK_META: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define {} @load0({}* %p) {
; CHECK-LABEL: @"dfs$load0"
; CHECK-NEXT: %a = load {}, {}* %p, align 1
; CHECK-NEXT: store {} zeroinitializer, {}* bitcast ([100 x i64]* @__dfsan_retval_tls to {}*), align [[#SBYTES]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: ret {} %a
%a = load {}, {}* %p
ret {} %a
}
define i16 @load_non_escaped_alloca() {
; CHECK-LABEL: @"dfs$load_non_escaped_alloca"
; CHECK-NEXT: [[S_ALLOCA:%.*]] = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: [[O_ALLOCA:%.*]] = alloca i32, align 4
; CHECK: [[SHADOW:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[S_ALLOCA]], align [[#SBYTES]]
; CHECK-NEXT: [[ORIGIN:%.*]] = load i32, i32* [[O_ALLOCA]], align 4
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] [[SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: store i32 [[ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%p = alloca i16
%a = load i16, i16* %p
ret i16 %a
}
define i16* @load_escaped_alloca() {
; CHECK-LABEL: @"dfs$load_escaped_alloca"
; CHECK: [[INTP:%.*]] = ptrtoint i[[#SBITS]]* %p to i64
; CHECK-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; CHECK-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; CHECK-NEXT: [[SHADOW_PTR0:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: [[ORIGIN_OFFSET:%.*]] = add i64 [[OFFSET]], 35184372088832
; CHECK-NEXT: [[ORIGIN_ADDR:%.*]] = and i64 [[ORIGIN_OFFSET]], -4
; CHECK-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; CHECK-NEXT: {{%.*}} = load i32, i32* [[ORIGIN_PTR]], align 4
; CHECK-NEXT: [[SHADOW_PTR1:%.*]] = getelementptr i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR0]], i64 1
; CHECK-NEXT: [[SHADOW0:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR0]], align [[#SBYTES]]
; CHECK-NEXT: [[SHADOW1:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR1]], align [[#SBYTES]]
; CHECK-NEXT: {{%.*}} = or i[[#SBITS]] [[SHADOW0]], [[SHADOW1]]
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
%p = alloca i16
%a = load i16, i16* %p
ret i16* %p
}
@X = constant i1 1
define i1 @load_global() {
; CHECK-LABEL: @"dfs$load_global"
; CHECK: %a = load i1, i1* @X, align 1
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
%a = load i1, i1* @X
ret i1 %a
}
define i1 @load1(i1* %p) {
; CHECK-LABEL: @"dfs$load1"
; CHECK-NEXT: [[PO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: [[PS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: [[INTP:%.*]] = ptrtoint {{.*}} %p to i64
; CHECK-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; CHECK-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; CHECK-NEXT: [[SHADOW_PTR:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: [[ORIGIN_OFFSET:%.*]] = add i64 [[OFFSET]], 35184372088832
; CHECK-NEXT: [[ORIGIN_ADDR:%.*]] = and i64 [[ORIGIN_OFFSET]], -4
; CHECK-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* [[ORIGIN_PTR]], align 4
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR]], align [[#SBYTES]]
; CHECK-NEXT: [[RS:%.*]] = or i[[#SBITS]] [[AS]], [[PS]]
; CHECK-NEXT: [[PS_NZ:%.*]] = icmp ne i[[#SBITS]] [[PS]], 0
; CHECK-NEXT: [[RO:%.*]] = select i1 [[PS_NZ]], i32 [[PO]], i32 [[AO]]
; CHECK-NEXT: %a = load i1, i1* %p, align 1
; CHECK-NEXT: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i1, i1* %p
ret i1 %a
}
define i16 @load16(i1 %i, i16* %p) {
; CHECK-LABEL: @"dfs$load16"
; CHECK-NEXT: [[PO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[PS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: [[INTP:%.*]] = ptrtoint {{.*}} %p to i64
; CHECK-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; CHECK-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; CHECK-NEXT: [[SHADOW_PTR0:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: [[ORIGIN_OFFSET:%.*]] = add i64 [[OFFSET]], 35184372088832
; CHECK-NEXT: [[ORIGIN_ADDR:%.*]] = and i64 [[ORIGIN_OFFSET]], -4
; CHECK-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* [[ORIGIN_PTR]], align 4
; CHECK-NEXT: [[SHADOW_PTR1:%.*]] = getelementptr i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR0]], i64 1
; CHECK-NEXT: [[SHADOW0:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR0]], align [[#SBYTES]]
; CHECK-NEXT: [[SHADOW1:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[SHADOW_PTR1]], align [[#SBYTES]]
; CHECK-NEXT: [[AS:%.*]] = or i[[#SBITS]] [[SHADOW0]], [[SHADOW1]]
; CHECK-NEXT: [[RS:%.*]] = or i[[#SBITS]] [[AS]], [[PS]]
; CHECK-NEXT: [[PS_NZ:%.*]] = icmp ne i[[#SBITS]] [[PS]], 0
; CHECK-NEXT: [[RO:%.*]] = select i1 [[PS_NZ]], i32 [[PO]], i32 [[AO]]
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] [[RS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK-NEXT: store i32 [[RO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i16, i16* %p
ret i16 %a
}
define i32 @load32(i32* %p) {
; CHECK-LABEL: @"dfs$load32"
; NO_COMBINE_LOAD_PTR-LABEL: @"dfs$load32"
; NO_COMBINE_LOAD_PTR: [[INTP:%.*]] = ptrtoint i32* %p to i64
; NO_COMBINE_LOAD_PTR-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_ADDR:%.*]] = add i64 [[OFFSET]], 35184372088832
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; NO_COMBINE_LOAD_PTR-NEXT: [[AO:%.*]] = load i32, i32* [[ORIGIN_PTR]], align 4
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR64:%.*]] = bitcast i[[#SBITS]]* [[SHADOW_PTR]] to i64*
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64:%.*]] = load i64, i64* [[SHADOW_PTR64]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_H32:%.*]] = lshr i64 [[SHADOW64]], 32
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32:%.*]] = or i64 [[SHADOW64]], [[SHADOW64_H32]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_H16:%.*]] = lshr i64 [[SHADOW64_HL32]], 16
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_HL16:%.*]] = or i64 [[SHADOW64_HL32]], [[SHADOW64_HL32_H16]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW:%.*]] = trunc i64 [[SHADOW64_HL32_HL16]] to i[[#SBITS]]
; NO_COMBINE_LOAD_PTR-NEXT: %a = load i32, i32* %p, align 4
; NO_COMBINE_LOAD_PTR-NEXT: store i[[#SBITS]] [[SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i32 [[AO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i32, i32* %p
ret i32 %a
}
define i64 @load64(i64* %p) {
; CHECK-LABEL: @"dfs$load64"
; NO_COMBINE_LOAD_PTR-LABEL: @"dfs$load64"
; NO_COMBINE_LOAD_PTR: [[INTP:%.*]] = ptrtoint i64* %p to i64
; NO_COMBINE_LOAD_PTR-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_ADDR:%.*]] = add i64 [[OFFSET]], 35184372088832
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR_0:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_0:%.*]] = load i32, i32* [[ORIGIN_PTR_0]], align 8
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR_0:%.*]] = bitcast i[[#SBITS]]* [[SHADOW_PTR]] to i64*
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_0:%.*]] = load i64, i64* [[SHADOW_PTR_0]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR_1:%.*]] = getelementptr i64, i64* [[SHADOW_PTR_0]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_1:%.*]] = load i64, i64* [[SHADOW_PTR_1]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64:%.*]] = or i64 [[SHADOW_0]], [[SHADOW_1]]
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR_1:%.*]] = getelementptr i32, i32* [[ORIGIN_PTR_0]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_1:%.*]] = load i32, i32* [[ORIGIN_PTR_1]], align 8
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_H32:%.*]] = lshr i64 [[SHADOW64]], 32
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32:%.*]] = or i64 [[SHADOW64]], [[SHADOW64_H32]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_H16:%.*]] = lshr i64 [[SHADOW64_HL32]], 16
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_HL16:%.*]] = or i64 [[SHADOW64_HL32]], [[SHADOW64_HL32_H16]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW:%.*]] = trunc i64 [[SHADOW64_HL32_HL16]] to i[[#SBITS]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_1_NZ:%.*]] = icmp ne i64 [[SHADOW_1]], 0
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN:%.*]] = select i1 [[SHADOW_1_NZ]], i32 [[ORIGIN_1]], i32 [[ORIGIN_0]]
; NO_COMBINE_LOAD_PTR-NEXT: %a = load i64, i64* %p, align 8
; NO_COMBINE_LOAD_PTR-NEXT: store i[[#SBITS]] [[SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i32 [[ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i64, i64* %p
ret i64 %a
}
define i64 @load64_align2(i64* %p) {
; CHECK-LABEL: @"dfs$load64_align2"
; NO_COMBINE_LOAD_PTR-LABEL: @"dfs$load64_align2"
; NO_COMBINE_LOAD_PTR: [[INTP:%.*]] = bitcast i64* %p to i8*
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL_ORIGIN:%.*]] = call zeroext i64 @__dfsan_load_label_and_origin(i8* [[INTP]], i64 8)
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL_ORIGIN_H32:%.*]] = lshr i64 [[LABEL_ORIGIN]], 32
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL:%.*]] = trunc i64 [[LABEL_ORIGIN_H32]] to i[[#SBITS]]
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN:%.*]] = trunc i64 [[LABEL_ORIGIN]] to i32
; NO_COMBINE_LOAD_PTR-NEXT: %a = load i64, i64* %p, align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i[[#SBITS]] [[LABEL]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i32 [[ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i64, i64* %p, align 2
ret i64 %a
}
define i92 @load92(i92* %p) {
; CHECK-LABEL: @"dfs$load92"
; NO_COMBINE_LOAD_PTR-LABEL: @"dfs$load92"
; NO_COMBINE_LOAD_PTR: [[INTP:%.*]] = ptrtoint i92* %p to i64
; NO_COMBINE_LOAD_PTR-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_ADDR:%.*]] = mul i64 [[OFFSET]], 2
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR:%.*]] = inttoptr i64 [[SHADOW_ADDR]] to i[[#SBITS]]*
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_ADDR:%.*]] = add i64 [[OFFSET]], 35184372088832
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR_0:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_0:%.*]] = load i32, i32* [[ORIGIN_PTR_0]], align 8
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR_0:%.*]] = bitcast i[[#SBITS]]* [[SHADOW_PTR]] to i64*
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_0:%.*]] = load i64, i64* [[SHADOW_PTR_0]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR_1:%.*]] = getelementptr i64, i64* [[SHADOW_PTR_0]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_1:%.*]] = load i64, i64* [[SHADOW_PTR_1]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_01:%.*]] = or i64 [[SHADOW_0]], [[SHADOW_1]]
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR_1:%.*]] = getelementptr i32, i32* [[ORIGIN_PTR_0]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_1:%.*]] = load i32, i32* [[ORIGIN_PTR_1]], align 8
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_PTR_2:%.*]] = getelementptr i64, i64* [[SHADOW_PTR_1]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_2:%.*]] = load i64, i64* [[SHADOW_PTR_2]], align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64:%.*]] = or i64 [[SHADOW_01]], [[SHADOW_2]]
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_PTR_2:%.*]] = getelementptr i32, i32* [[ORIGIN_PTR_1]], i64 1
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_2:%.*]] = load i32, i32* [[ORIGIN_PTR_2]], align 8
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_H32:%.*]] = lshr i64 [[SHADOW64]], 32
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32:%.*]] = or i64 [[SHADOW64]], [[SHADOW64_H32]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_H16:%.*]] = lshr i64 [[SHADOW64_HL32]], 16
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW64_HL32_HL16:%.*]] = or i64 [[SHADOW64_HL32]], [[SHADOW64_HL32_H16]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW:%.*]] = trunc i64 [[SHADOW64_HL32_HL16]] to i[[#SBITS]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_1_NZ:%.*]] = icmp ne i64 [[SHADOW_1]], 0
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN_10:%.*]] = select i1 [[SHADOW_1_NZ]], i32 [[ORIGIN_1]], i32 [[ORIGIN_0]]
; NO_COMBINE_LOAD_PTR-NEXT: [[SHADOW_2_NZ:%.*]] = icmp ne i64 [[SHADOW_2]], 0
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN:%.*]] = select i1 [[SHADOW_2_NZ]], i32 [[ORIGIN_2]], i32 [[ORIGIN_10]]
; NO_COMBINE_LOAD_PTR-NEXT: %a = load i92, i92* %p, align 8
; NO_COMBINE_LOAD_PTR-NEXT: store i[[#SBITS]] [[SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i32 [[ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i92, i92* %p
ret i92 %a
}
define i17 @load17(i17* %p) {
; CHECK-LABEL: @"dfs$load17"
; NO_COMBINE_LOAD_PTR-LABEL: @"dfs$load17"
; NO_COMBINE_LOAD_PTR-NEXT: [[INTP:%.*]] = bitcast i17* %p to i8*
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL_ORIGIN:%.*]] = call zeroext i64 @__dfsan_load_label_and_origin(i8* [[INTP]], i64 3)
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL_ORIGIN_H32:%.*]] = lshr i64 [[LABEL_ORIGIN]], 32
; NO_COMBINE_LOAD_PTR-NEXT: [[LABEL:%.*]] = trunc i64 [[LABEL_ORIGIN_H32]] to i[[#SBITS]]
; NO_COMBINE_LOAD_PTR-NEXT: [[ORIGIN:%.*]] = trunc i64 [[LABEL_ORIGIN]] to i32
; NO_COMBINE_LOAD_PTR-NEXT: %a = load i17, i17* %p, align 4
; NO_COMBINE_LOAD_PTR-NEXT: store i[[#SBITS]] [[LABEL]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[#SBYTES]]
; NO_COMBINE_LOAD_PTR-NEXT: store i32 [[ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i17, i17* %p, align 4
ret i17 %a
}
define void @store_zero_to_non_escaped_alloca() {
; CHECK-LABEL: @"dfs$store_zero_to_non_escaped_alloca"
; CHECK-NEXT: [[A:%.*]] = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: %_dfsa = alloca i32, align 4
; CHECK-NEXT: %p = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* [[A]], align [[#SBYTES]]
; CHECK-NEXT: store i16 1, i16* %p, align 2
; CHECK-NEXT: ret void
%p = alloca i16
store i16 1, i16* %p
ret void
}
define void @store_nonzero_to_non_escaped_alloca(i16 %a) {
; CHECK-LABEL: @"dfs$store_nonzero_to_non_escaped_alloca"
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %_dfsa = alloca i32, align 4
; CHECK: store i32 [[AO]], i32* %_dfsa, align 4
%p = alloca i16
store i16 %a, i16* %p
ret void
}
declare void @foo(i16* %p)
define void @store_zero_to_escaped_alloca() {
; CHECK-LABEL: @"dfs$store_zero_to_escaped_alloca"
; CHECK: [[SA:%.*]] = bitcast i[[#SBITS]]* {{.*}} to i32*
; CHECK-NEXT: store i32 0, i32* [[SA]], align 2
; CHECK-NEXT: store i[[#SBITS]] 1, i[[#SBITS]]* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; COMBINE_STORE_PTR-LABEL: @"dfs$store_zero_to_escaped_alloca"
; COMBINE_STORE_PTR: [[SA:%.*]] = bitcast i[[#SBITS]]* {{.*}} to i32*
; COMBINE_STORE_PTR_NEXT: store i32 0, i32* [[SA]], align 2
; COMBINE_STORE_PTR_NEXT: store i16 1, i16* %p, align 2
; COMBINE_STORE_PTR_NEXT: call void @foo(i16* %p)
; COMBINE_STORE_PTR_NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
%p = alloca i16
store i16 1, i16* %p
call void @foo(i16* %p)
ret void
}
define void @store_nonzero_to_escaped_alloca(i16 %a) {
; CHECK-LABEL: @"dfs$store_nonzero_to_escaped_alloca"
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: [[INTP:%.*]] = ptrtoint {{.*}} %p to i64
; CHECK-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; CHECK: [[ORIGIN_OFFSET:%.*]] = add i64 [[OFFSET]], 35184372088832
; CHECK-NEXT: [[ORIGIN_ADDR:%.*]] = and i64 [[ORIGIN_OFFSET]], -4
; CHECK-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[AO]])
; CHECK-NEXT: store i32 [[NO]], i32* [[ORIGIN_PTR]], align 4
; CHECK-NEXT: br label %[[L2]]
; CHECK: [[L2]]:
; CHECK-NEXT: store i16 %a, i16* %p, align 2
; COMBINE_STORE_PTR-LABEL: @"dfs$store_nonzero_to_escaped_alloca"
; COMBINE_STORE_PTR-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_STORE_PTR-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; COMBINE_STORE_PTR: [[INTP:%.*]] = ptrtoint {{.*}} %p to i64
; COMBINE_STORE_PTR-NEXT: [[OFFSET:%.*]] = and i64 [[INTP]]
; COMBINE_STORE_PTR: [[ORIGIN_OFFSET:%.*]] = add i64 [[OFFSET]], 35184372088832
; COMBINE_STORE_PTR-NEXT: [[ORIGIN_ADDR:%.*]] = and i64 [[ORIGIN_OFFSET]], -4
; COMBINE_STORE_PTR-NEXT: [[ORIGIN_PTR:%.*]] = inttoptr i64 [[ORIGIN_ADDR]] to i32*
; COMBINE_STORE_PTR: %_dfscmp = icmp ne i[[#SBITS]] [[AS]], 0
; COMBINE_STORE_PTR-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; COMBINE_STORE_PTR: [[L1]]:
; COMBINE_STORE_PTR-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[AO]])
; COMBINE_STORE_PTR-NEXT: store i32 [[NO]], i32* [[ORIGIN_PTR]], align 4
; COMBINE_STORE_PTR-NEXT: br label %[[L2]]
; COMBINE_STORE_PTR: [[L2]]:
; COMBINE_STORE_PTR-NEXT: store i16 %a, i16* %p, align 2
%p = alloca i16
store i16 %a, i16* %p
call void @foo(i16* %p)
ret void
}
define void @store64_align8(i64* %p, i64 %a) {
; CHECK-LABEL: @"dfs$store64_align8"
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[AO]])
; CHECK-NEXT: [[NO_ZEXT:%.*]] = zext i32 [[NO]] to i64
; CHECK-NEXT: [[NO_SHL:%.*]] = shl i64 [[NO_ZEXT]], 32
; CHECK-NEXT: [[NO2:%.*]] = or i64 [[NO_ZEXT]], [[NO_SHL]]
; CHECK-NEXT: [[O_PTR:%.*]] = bitcast i32* {{.*}} to i64*
; CHECK-NEXT: store i64 [[NO2]], i64* [[O_PTR]], align 8
; CHECK-NEXT: br label %[[L2]]
; CHECK: [[L2]]:
; CHECK-NEXT: store i64 %a, i64* %p, align 8
; COMBINE_STORE_PTR-LABEL: @"dfs$store64_align8"
; COMBINE_STORE_PTR-NEXT: [[PO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_STORE_PTR-NEXT: [[PS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; COMBINE_STORE_PTR-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; COMBINE_STORE_PTR-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; COMBINE_STORE_PTR-NEXT: [[MS:%.*]] = or i[[#SBITS]] [[AS]], [[PS]]
; COMBINE_STORE_PTR-NEXT: [[NE:%.*]] = icmp ne i[[#SBITS]] [[PS]], 0
; COMBINE_STORE_PTR-NEXT: [[MO:%.*]] = select i1 [[NE]], i32 [[PO]], i32 [[AO]]
; COMBINE_STORE_PTR: %_dfscmp = icmp ne i[[#SBITS]] [[MS]], 0
; COMBINE_STORE_PTR-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; COMBINE_STORE_PTR: [[L1]]:
; COMBINE_STORE_PTR-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[MO]])
; COMBINE_STORE_PTR-NEXT: [[NO_ZEXT:%.*]] = zext i32 [[NO]] to i64
; COMBINE_STORE_PTR-NEXT: [[NO_SHL:%.*]] = shl i64 [[NO_ZEXT]], 32
; COMBINE_STORE_PTR-NEXT: [[NO2:%.*]] = or i64 [[NO_ZEXT]], [[NO_SHL]]
; COMBINE_STORE_PTR-NEXT: [[O_PTR:%.*]] = bitcast i32* {{.*}} to i64*
; COMBINE_STORE_PTR-NEXT: store i64 [[NO2]], i64* [[O_PTR]], align 8
; COMBINE_STORE_PTR-NEXT: br label %[[L2]]
; COMBINE_STORE_PTR: [[L2]]:
; COMBINE_STORE_PTR-NEXT: store i64 %a, i64* %p, align 8
store i64 %a, i64* %p
ret void
}
define void @store64_align2(i64* %p, i64 %a) {
; CHECK-LABEL: @"dfs$store64_align2"
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[AO]])
; CHECK-NEXT: store i32 [[NO]], i32* [[O_PTR0:%.*]], align 4
; CHECK-NEXT: [[O_PTR1:%.*]] = getelementptr i32, i32* [[O_PTR0]], i32 1
; CHECK-NEXT: store i32 [[NO]], i32* [[O_PTR1]], align 4
; CHECK: [[L2]]:
; CHECK-NEXT: store i64 %a, i64* %p, align [[#SBYTES]]
store i64 %a, i64* %p, align 2
ret void
}
define void @store96_align8(i96* %p, i96 %a) {
; CHECK-LABEL: @"dfs$store96_align8"
; CHECK-NEXT: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: [[NO:%.*]] = call i32 @__dfsan_chain_origin(i32 [[AO]])
; CHECK-NEXT: [[NO_ZEXT:%.*]] = zext i32 [[NO]] to i64
; CHECK-NEXT: [[NO_SHL:%.*]] = shl i64 [[NO_ZEXT]], 32
; CHECK-NEXT: [[NO2:%.*]] = or i64 [[NO_ZEXT]], [[NO_SHL]]
; CHECK-NEXT: [[O_PTR64:%.*]] = bitcast i32* [[O_PTR0:%.*]] to i64*
; CHECK-NEXT: store i64 [[NO2]], i64* [[O_PTR64]], align 8
; CHECK-NEXT: [[O_PTR1:%.*]] = getelementptr i32, i32* [[O_PTR0]], i32 2
; CHECK-NEXT: store i32 [[NO]], i32* [[O_PTR1]], align 8
; CHECK: [[L2]]:
; CHECK-NEXT: store i96 %a, i96* %p, align 8
store i96 %a, i96* %p, align 8
ret void
}

327
llvm/test/Instrumentation/DataFlowSanitizer/origin_load.ll Normal file
View File

@ -0,0 +1,327 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels -S | FileCheck %s --check-prefixes=CHECK,CHECK8,COMBINE_LOAD_PTR
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels -dfsan-combine-pointer-labels-on-load=false -S | FileCheck %s --check-prefixes=CHECK,CHECK8
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels -S | FileCheck %s --check-prefixes=CHECK,CHECK16,COMBINE_LOAD_PTR
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels -dfsan-combine-pointer-labels-on-load=false -S | FileCheck %s --check-prefixes=CHECK,CHECK16
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define {} @load0({}* %p) {
; CHECK-LABEL: @"dfs$load0"
; CHECK-NEXT: %a = load {}, {}* %p, align 1
; CHECK-NEXT: store {} zeroinitializer, {}* bitcast ([100 x i64]* @__dfsan_retval_tls to {}*), align [[ALIGN:2]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
; CHECK-NEXT: ret {} %a
%a = load {}, {}* %p
ret {} %a
}
define i16 @load_non_escaped_alloca() {
; CHECK-LABEL: @"dfs$load_non_escaped_alloca"
; CHECK-NEXT: %[[#S_ALLOCA:]] = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: %_dfsa = alloca i32, align 4
; CHECK: %[[#SHADOW:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#S_ALLOCA]], align [[#SBYTES]]
; CHECK-NEXT: %[[#ORIGIN:]] = load i32, i32* %_dfsa, align 4
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%p = alloca i16
%a = load i16, i16* %p
ret i16 %a
}
define i16* @load_escaped_alloca() {
; CHECK-LABEL: @"dfs$load_escaped_alloca"
; CHECK: %[[#INTP:]] = ptrtoint i16* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:]] = and i64 %[[#INTP]], [[#%.10d,MASK:]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR0:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_OFFSET:]] = add i64 %[[#INTP+1]], [[#%.10d,ORIGIN_MASK:]]
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = and i64 %[[#ORIGIN_OFFSET]], -4
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: {{%.*}} = load i32, i32* %[[#ORIGIN_PTR]], align 4
; CHECK-NEXT: %[[#SHADOW_PTR1:]] = getelementptr i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR0]], i64 1
; CHECK-NEXT: %[[#SHADOW:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR0]], align [[#SBYTES]]
; CHECK-NEXT: %[[#SHADOW+1]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR1]], align [[#SBYTES]]
; CHECK-NEXT: {{%.*}} = or i[[#SBITS]] %[[#SHADOW]], %[[#SHADOW+1]]
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
%p = alloca i16
%a = load i16, i16* %p
ret i16* %p
}
@X = constant i1 1
define i1 @load_global() {
; CHECK-LABEL: @"dfs$load_global"
; CHECK: %a = load i1, i1* @X, align 1
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 0, i32* @__dfsan_retval_origin_tls, align 4
%a = load i1, i1* @X
ret i1 %a
}
define i1 @load1(i1* %p) {
; CHECK-LABEL: @"dfs$load1"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#INTP:]] = ptrtoint i1* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:]] = and i64 %[[#INTP]], [[#MASK]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_OFFSET:]] = add i64 %[[#INTP+1]], [[#ORIGIN_MASK]]
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = and i64 %[[#ORIGIN_OFFSET]], -4
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: %[[#AO:]] = load i32, i32* %[[#ORIGIN_PTR]], align 4
; CHECK-NEXT: %[[#AS:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR]], align [[#SBYTES]]
; COMBINE_LOAD_PTR-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#AS]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#AO:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK-NEXT: %a = load i1, i1* %p, align 1
; CHECK-NEXT: store i[[#SBITS]] %[[#AS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#AO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i1, i1* %p
ret i1 %a
}
define i16 @load16(i1 %i, i16* %p) {
; CHECK-LABEL: @"dfs$load16"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#INTP:]] = ptrtoint i16* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:]] = and i64 %[[#INTP]], [[#MASK]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR0:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_OFFSET:]] = add i64 %[[#INTP+1]], [[#ORIGIN_MASK]]
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = and i64 %[[#ORIGIN_OFFSET]], -4
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: %[[#AO:]] = load i32, i32* %[[#ORIGIN_PTR]], align 4
; CHECK-NEXT: %[[#SHADOW_PTR1:]] = getelementptr i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR0]], i64 1
; CHECK-NEXT: %[[#SHADOW:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR0]], align [[#SBYTES]]
; CHECK-NEXT: %[[#SHADOW+1]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR1]], align [[#SBYTES]]
; CHECK-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#SHADOW+1]]
; COMBINE_LOAD_PTR-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#AS]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#AO:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK-NEXT: %a = load i16, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] %[[#AS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#AO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i16, i16* %p
ret i16 %a
}
define i32 @load32(i32* %p) {
; CHECK-LABEL: @"dfs$load32"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK: %[[#INTP:]] = ptrtoint i32* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:INTP+1]] = and i64 %[[#INTP]], [[#MASK]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = add i64 %[[#INTP+1]], [[#ORIGIN_MASK]]
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: %[[#AO:]] = load i32, i32* %[[#ORIGIN_PTR]], align 4
; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i[[#WSBITS:mul(SBITS,4)]]*
; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i[[#WSBITS]], i[[#WSBITS]]* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
; CHECK-NEXT: %[[#WIDE_SHADOW+1]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW]], [[#mul(SBITS,2)]]
; CHECK-NEXT: %[[#WIDE_SHADOW+2]] = or i[[#WSBITS]] %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW+1]]
; CHECK-NEXT: %[[#WIDE_SHADOW+3]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW+2]], [[#SBITS]]
; CHECK-NEXT: %[[#WIDE_SHADOW+4]] = or i[[#WSBITS]] %[[#WIDE_SHADOW+2]], %[[#WIDE_SHADOW+3]]
; CHECK-NEXT: %[[#SHADOW:]] = trunc i[[#WSBITS]] %[[#WIDE_SHADOW+4]] to i[[#SBITS]]
; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#AO:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK-NEXT: %a = load i32, i32* %p, align 4
; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#AO]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i32, i32* %p
ret i32 %a
}
define i64 @load64(i64* %p) {
; CHECK-LABEL: @"dfs$load64"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK: %[[#INTP:]] = ptrtoint i64* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:INTP+1]] = and i64 %[[#INTP]], [[#MASK]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = add i64 %[[#INTP+1]], [[#ORIGIN_MASK]]
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: %[[#ORIGIN:]] = load i32, i32* %[[#ORIGIN_PTR]], align 8
; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i64*
; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, i64* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
; COMM: On fast16, the 2x64 shadow bits need to be ORed first.
; CHECK16-NEXT: %[[#WIDE_SHADOW_PTR2:]] = getelementptr i64, i64* %[[#WIDE_SHADOW_PTR]], i64 1
; CHECK16-NEXT: %[[#WIDE_SHADOW2:]] = load i64, i64* %[[#WIDE_SHADOW_PTR2]], align [[#SBYTES]]
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW2]]
; CHECK16-NEXT: %[[#ORIGIN_PTR2:]] = getelementptr i32, i32* %[[#ORIGIN_PTR]], i64 1
; CHECK16-NEXT: %[[#ORIGIN2:]] = load i32, i32* %[[#ORIGIN_PTR2]], align 8
; CHECK16-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK16-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK16-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
; CHECK16-NEXT: %[[#SHADOW_NZ:]] = icmp ne i64 %[[#WIDE_SHADOW2]], 0
; CHECK16-NEXT: %[[#ORIGIN:]] = select i1 %[[#SHADOW_NZ]], i32 %[[#ORIGIN2]], i32 %[[#ORIGIN]]
; COMM: On fast8, no need to OR the wide shadow but one more shift is needed.
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#ORIGIN:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#ORIGIN]]
; CHECK-NEXT: %a = load i64, i64* %p, align 8
; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i64, i64* %p
ret i64 %a
}
define i64 @load64_align2(i64* %p) {
; CHECK-LABEL: @"dfs$load64_align2"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#INTP:]] = bitcast i64* %p to i8*
; CHECK-NEXT: %[[#LABEL_ORIGIN:]] = call zeroext i64 @__dfsan_load_label_and_origin(i8* %[[#INTP]], i64 8)
; CHECK-NEXT: %[[#LABEL_ORIGIN+1]] = lshr i64 %[[#LABEL_ORIGIN]], 32
; CHECK-NEXT: %[[#LABEL:]] = trunc i64 %[[#LABEL_ORIGIN+1]] to i[[#SBITS]]
; CHECK-NEXT: %[[#ORIGIN:]] = trunc i64 %[[#LABEL_ORIGIN]] to i32
; COMBINE_LOAD_PTR-NEXT: %[[#LABEL:]] = or i[[#SBITS]] %[[#LABEL]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#ORIGIN:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#ORIGIN]]
; CHECK-NEXT: %a = load i64, i64* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] %[[#LABEL]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i64, i64* %p, align 2
ret i64 %a
}
define i128 @load128(i128* %p) {
; CHECK-LABEL: @"dfs$load128"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK: %[[#INTP:]] = ptrtoint i128* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:INTP+1]] = and i64 %[[#INTP]], [[#MASK]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = add i64 %[[#INTP+1]], [[#ORIGIN_MASK]]
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK-NEXT: %[[#ORIGIN:]] = load i32, i32* %[[#ORIGIN_PTR]], align 8
; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i64*
; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, i64* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
; CHECK-NEXT: %[[#WIDE_SHADOW_PTR2:]] = getelementptr i64, i64* %[[#WIDE_SHADOW_PTR]], i64 1
; CHECK-NEXT: %[[#WIDE_SHADOW2:]] = load i64, i64* %[[#WIDE_SHADOW_PTR2]], align [[#SBYTES]]
; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW2]]
; CHECK-NEXT: %[[#ORIGIN_PTR2:]] = getelementptr i32, i32* %[[#ORIGIN_PTR]], i64 1
; CHECK-NEXT: %[[#ORIGIN2:]] = load i32, i32* %[[#ORIGIN_PTR2]], align 8
; COMM: On fast16, we need to OR 4x64bits for the wide shadow, before ORing its bytes.
; CHECK16-NEXT: %[[#WIDE_SHADOW_PTR3:]] = getelementptr i64, i64* %[[#WIDE_SHADOW_PTR2]], i64 1
; CHECK16-NEXT: %[[#WIDE_SHADOW3:]] = load i64, i64* %[[#WIDE_SHADOW_PTR3]], align [[#SBYTES]]
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW3]]
; CHECK16-NEXT: %[[#ORIGIN_PTR3:]] = getelementptr i32, i32* %[[#ORIGIN_PTR2]], i64 1
; CHECK16-NEXT: %[[#ORIGIN3:]] = load i32, i32* %[[#ORIGIN_PTR3]], align 8
; CHECK16-NEXT: %[[#WIDE_SHADOW_PTR4:]] = getelementptr i64, i64* %[[#WIDE_SHADOW_PTR3]], i64 1
; CHECK16-NEXT: %[[#WIDE_SHADOW4:]] = load i64, i64* %[[#WIDE_SHADOW_PTR4]], align [[#SBYTES]]
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW4]]
; CHECK16-NEXT: %[[#ORIGIN_PTR4:]] = getelementptr i32, i32* %[[#ORIGIN_PTR3]], i64 1
; CHECK16-NEXT: %[[#ORIGIN4:]] = load i32, i32* %[[#ORIGIN_PTR4]], align 8
; CHECK16-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK16-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
; CHECK16-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK16-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
; CHECK16-NEXT: %[[#SHADOW2_NZ:]] = icmp ne i64 %[[#WIDE_SHADOW2]], 0
; CHECK16-NEXT: %[[#ORIGIN:]] = select i1 %[[#SHADOW2_NZ]], i32 %[[#ORIGIN2]], i32 %[[#ORIGIN]]
; CHECK16-NEXT: %[[#SHADOW3_NZ:]] = icmp ne i64 %[[#WIDE_SHADOW3]], 0
; CHECK16-NEXT: %[[#ORIGIN:]] = select i1 %[[#SHADOW3_NZ]], i32 %[[#ORIGIN3]], i32 %[[#ORIGIN]]
; CHECK16-NEXT: %[[#SHADOW4_NZ:]] = icmp ne i64 %[[#WIDE_SHADOW4]], 0
; CHECK16-NEXT: %[[#ORIGIN:]] = select i1 %[[#SHADOW4_NZ]], i32 %[[#ORIGIN4]], i32 %[[#ORIGIN]]
; COMM: On fast8, we need to OR 2x64bits for the wide shadow, before ORing its bytes (one more shift).
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8
; CHECK8-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
; CHECK8-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
; CHECK8-NEXT: %[[#SHADOW2_NZ:]] = icmp ne i64 %[[#WIDE_SHADOW2]], 0
; CHECK8-NEXT: %[[#ORIGIN:]] = select i1 %[[#SHADOW2_NZ]], i32 %[[#ORIGIN2]], i32 %[[#ORIGIN]]
; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#ORIGIN:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#ORIGIN]]
; CHECK-NEXT: %a = load i128, i128* %p, align 8
; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i128, i128* %p
ret i128 %a
}
define i17 @load17(i17* %p) {
; CHECK-LABEL: @"dfs$load17"
; COMBINE_LOAD_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#INTP:]] = bitcast i17* %p to i8*
; CHECK-NEXT: %[[#LABEL_ORIGIN:]] = call zeroext i64 @__dfsan_load_label_and_origin(i8* %[[#INTP]], i64 3)
; CHECK-NEXT: %[[#LABEL_ORIGIN_H32:]] = lshr i64 %[[#LABEL_ORIGIN]], 32
; CHECK-NEXT: %[[#LABEL:]] = trunc i64 %[[#LABEL_ORIGIN_H32]] to i[[#SBITS]]
; CHECK-NEXT: %[[#ORIGIN:]] = trunc i64 %[[#LABEL_ORIGIN]] to i32
; COMBINE_LOAD_PTR-NEXT: %[[#LABEL:]] = or i[[#SBITS]] %[[#LABEL]], %[[#PS]]
; COMBINE_LOAD_PTR-NEXT: %[[#NZ:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_LOAD_PTR-NEXT: %[[#ORIGIN:]] = select i1 %[[#NZ]], i32 %[[#PO]], i32 %[[#ORIGIN]]
; CHECK-NEXT: %a = load i17, i17* %p, align 4
; CHECK-NEXT: store i[[#SBITS]] %[[#LABEL]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: store i32 %[[#ORIGIN]], i32* @__dfsan_retval_origin_tls, align 4
%a = load i17, i17* %p, align 4
ret i17 %a
}

9
llvm/test/Instrumentation/DataFlowSanitizer/origin_mem_intrinsic.ll
View File

@ -1,4 +1,5 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@ -13,7 +14,7 @@ define void @memcpy(i8* %d, i8* %s, i32 %l) {
; CHECK: @"dfs$memcpy"
; CHECK: [[L64:%.*]] = zext i32 %l to i64
; CHECK: call void @__dfsan_mem_origin_transfer(i8* %d, i8* %s, i64 [[L64]])
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 {{.*}}, i8* align 2 {{.*}}, i32 {{.*}}, i1 false)
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align [[#SBYTES]] {{.*}}, i8* align [[#SBYTES]] {{.*}}, i32 {{.*}}, i1 false)
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 %l, i1 false)
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %d, i8* %s, i32 %l, i1 0)
@ -24,7 +25,7 @@ define void @memmove(i8* %d, i8* %s, i32 %l) {
; CHECK: @"dfs$memmove"
; CHECK: [[L64:%.*]] = zext i32 %l to i64
; CHECK: call void @__dfsan_mem_origin_transfer(i8* %d, i8* %s, i64 [[L64]])
; CHECK: call void @llvm.memmove.p0i8.p0i8.i32(i8* align 2 {{.*}}, i8* align 2 {{.*}}, i32 {{.*}}, i1 false)
; CHECK: call void @llvm.memmove.p0i8.p0i8.i32(i8* align [[#SBYTES]] {{.*}}, i8* align [[#SBYTES]] {{.*}}, i32 {{.*}}, i1 false)
; CHECK: call void @llvm.memmove.p0i8.p0i8.i32(i8* %d, i8* %s, i32 %l, i1 false)
call void @llvm.memmove.p0i8.p0i8.i32(i8* %d, i8* %s, i32 %l, i1 0)
@ -34,7 +35,7 @@ define void @memmove(i8* %d, i8* %s, i32 %l) {
define void @memset(i8* %p, i8 %v) {
; CHECK: @"dfs$memset"
; CHECK: [[O:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[S:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: [[S:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN:2]]
; CHECK: call void @__dfsan_set_label(i[[#SBITS]] [[S]], i32 [[O]], i8* %p, i64 1)
call void @llvm.memset.p0i8.i64(i8* %p, i8 %v, i64 1, i1 1)
ret void

56
llvm/test/Instrumentation/DataFlowSanitizer/origin_other_ops.ll
View File

@ -1,7 +1,13 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
; CHECK: @__dfsan_retval_tls = external thread_local(initialexec) global [[TLS_ARR]]
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define float @unop(float %f) {
; CHECK: @"dfs$unop"
; CHECK: [[FO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
@ -15,8 +21,8 @@ define i1 @binop(i1 %a, i1 %b) {
; CHECK: @"dfs$binop"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[MO:%.*]] = select i1 [[NE]], i32 [[BO]], i32 [[AO]]
; CHECK: store i32 [[MO]], i32* @__dfsan_retval_origin_tls, align 4
@ -37,8 +43,8 @@ define i1 @cmpop(i1 %a, i1 %b) {
; CHECK: @"dfs$cmpop"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[MO:%.*]] = select i1 [[NE]], i32 [[BO]], i32 [[AO]]
; CHECK: store i32 [[MO]], i32* @__dfsan_retval_origin_tls, align 4
@ -52,14 +58,14 @@ define i32* @gepop([10 x [20 x i32]]* %p, i32 %a, i32 %b, i32 %c) {
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[PO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[CS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 6) to i16*), align 2
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS_NE:%.*]] = icmp ne i16 [[AS]], 0
; CHECK: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 6) to i[[#SBITS]]*), align 2
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS_NE:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK: [[APO:%.*]] = select i1 [[AS_NE]], i32 [[AO]], i32 [[PO]]
; CHECK: [[BS_NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS_NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[ABPO:%.*]] = select i1 [[BS_NE]], i32 [[BO]], i32 [[APO]]
; CHECK: [[CS_NE:%.*]] = icmp ne i16 [[CS]], 0
; CHECK: [[CS_NE:%.*]] = icmp ne i[[#SBITS]] [[CS]], 0
; CHECK: [[ABCPO:%.*]] = select i1 [[CS_NE]], i32 [[CO]], i32 [[ABPO]]
; CHECK: store i32 [[ABCPO]], i32* @__dfsan_retval_origin_tls, align 4
@ -71,8 +77,8 @@ define i32 @eeop(<4 x i32> %a, i32 %b) {
; CHECK: @"dfs$eeop"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[MO:%.*]] = select i1 [[NE]], i32 [[BO]], i32 [[AO]]
; CHECK: store i32 [[MO]], i32* @__dfsan_retval_origin_tls, align 4
@ -85,11 +91,11 @@ define <4 x i32> @ieop(<4 x i32> %p, i32 %a, i32 %b) {
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[PO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; CHECK: [[AS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[AS_NE:%.*]] = icmp ne i16 [[AS]], 0
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[AS_NE:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0
; CHECK: [[APO:%.*]] = select i1 [[AS_NE]], i32 [[AO]], i32 [[PO]]
; CHECK: [[BS_NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS_NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[ABPO:%.*]] = select i1 [[BS_NE]], i32 [[BO]], i32 [[APO]]
; CHECK: store i32 [[ABPO]], i32* @__dfsan_retval_origin_tls, align 4
@ -101,8 +107,8 @@ define <4 x i32> @svop(<4 x i32> %a, <4 x i32> %b) {
; CHECK: @"dfs$svop"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i16*), align 2
; CHECK: [[NE:%.*]] = icmp ne i16 [[BS]], 0
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align 2
; CHECK: [[NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
; CHECK: [[MO:%.*]] = select i1 [[NE]], i32 [[BO]], i32 [[AO]]
; CHECK: store i32 [[MO]], i32* @__dfsan_retval_origin_tls, align 4
@ -123,11 +129,13 @@ define {i32, {float, float}} @ivop({i32, {float, float}} %a, {float, float} %b)
; CHECK: @"dfs$ivop"
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load { i16, i16 }, { i16, i16 }* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 6) to { i16, i16 }*), align 2
; CHECK: [[BS0:%.*]] = extractvalue { i16, i16 } [[BS]], 0
; CHECK: [[BS1:%.*]] = extractvalue { i16, i16 } [[BS]], 1
; CHECK: [[BS01:%.*]] = or i16 [[BS0]], [[BS1]]
; CHECK: [[NE:%.*]] = icmp ne i16 [[BS01]], 0
; COMM: TODO simplify the expression [[#mul(2,SBYTES) + max(SBYTES,2)]] to
; COMM: [[#mul(3,SBYTES)]], if shadow-tls-alignment is updated to match shadow
; CHECK: [[BS:%.*]] = load { i[[#SBITS]], i[[#SBITS]] }, { i[[#SBITS]], i[[#SBITS]] }* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 [[#mul(2,SBYTES) + max(SBYTES,2)]]) to { i[[#SBITS]], i[[#SBITS]] }*), align 2
; CHECK: [[BS0:%.*]] = extractvalue { i[[#SBITS]], i[[#SBITS]] } [[BS]], 0
; CHECK: [[BS1:%.*]] = extractvalue { i[[#SBITS]], i[[#SBITS]] } [[BS]], 1
; CHECK: [[BS01:%.*]] = or i[[#SBITS]] [[BS0]], [[BS1]]
; CHECK: [[NE:%.*]] = icmp ne i[[#SBITS]] [[BS01]], 0
; CHECK: [[MO:%.*]] = select i1 [[NE]], i32 [[BO]], i32 [[AO]]
; CHECK: store i32 [[MO]], i32* @__dfsan_retval_origin_tls, align 4

7
llvm/test/Instrumentation/DataFlowSanitizer/origin_phi.ll
View File

@ -1,4 +1,5 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@ -11,8 +12,8 @@ define i32 @phiop(i32 %a, i32 %b, i1 %c) {
; CHECK: entry:
; CHECK: [[BO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK: [[AO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[#SBYTES]]
; CHECK: [[BS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN:2]]
; CHECK: [[AS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK: br i1 %c, label %next, label %done
; CHECK: next:
; CHECK: br i1 %c, label %T, label %F

31
llvm/test/Instrumentation/DataFlowSanitizer/origin_select.ll
View File

@ -1,16 +1,23 @@
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=1 -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=TRACK_CONTROL_FLOW
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=0 -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=NO_TRACK_CONTROL_FLOW
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=1 -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK,TRACK_CONTROL_FLOW
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=0 -dfsan-track-origins=1 -dfsan-fast-8-labels=true -S | FileCheck %s --check-prefixes=CHECK,NO_TRACK_CONTROL_FLOW
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=1 -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK,TRACK_CONTROL_FLOW
; RUN: opt < %s -dfsan -dfsan-track-select-control-flow=0 -dfsan-track-origins=1 -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefixes=CHECK,NO_TRACK_CONTROL_FLOW
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
; CHECK: @__dfsan_retval_tls = external thread_local(initialexec) global [[TLS_ARR]]
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define i8 @select8(i1 %c, i8 %t, i8 %f) {
; TRACK_CONTROL_FLOW: @"dfs$select8"
; TRACK_CONTROL_FLOW: [[CO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; TRACK_CONTROL_FLOW: [[FO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; TRACK_CONTROL_FLOW: [[TO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; TRACK_CONTROL_FLOW: [[TFO:%.*]] = select i1 %c, i32 [[TO]], i32 [[FO]]
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i16 [[CS]], 0
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i[[#SBITS]] [[CS]], 0
; TRACK_CONTROL_FLOW: [[CTFO:%.*]] = select i1 [[CS_NE]], i32 [[CO]], i32 [[TFO]]
; TRACK_CONTROL_FLOW: store i32 [[CTFO]], i32* @__dfsan_retval_origin_tls, align 4
@ -28,8 +35,8 @@ define i8 @select8e(i1 %c, i8 %tf) {
; TRACK_CONTROL_FLOW: @"dfs$select8e"
; TRACK_CONTROL_FLOW: [[CO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; TRACK_CONTROL_FLOW: [[TFO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i16 [[CS]], 0
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i[[#SBITS]] [[CS]], 0
; TRACK_CONTROL_FLOW: [[CTFO:%.*]] = select i1 [[CS_NE]], i32 [[CO]], i32 [[TFO]]
; TRACK_CONTROL_FLOW: store i32 [[CTFO]], i32* @__dfsan_retval_origin_tls, align 4
@ -46,19 +53,19 @@ define <4 x i8> @select8v(<4 x i1> %c, <4 x i8> %t, <4 x i8> %f) {
; TRACK_CONTROL_FLOW: [[CO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; TRACK_CONTROL_FLOW: [[FO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; TRACK_CONTROL_FLOW: [[TO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; TRACK_CONTROL_FLOW: [[FS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align 2
; TRACK_CONTROL_FLOW: [[FS_NE:%.*]] = icmp ne i16 [[FS]], 0
; TRACK_CONTROL_FLOW: [[FS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; TRACK_CONTROL_FLOW: [[CS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align 2
; TRACK_CONTROL_FLOW: [[FS_NE:%.*]] = icmp ne i[[#SBITS]] [[FS]], 0
; TRACK_CONTROL_FLOW: [[FTO:%.*]] = select i1 [[FS_NE]], i32 [[FO]], i32 [[TO]]
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i16 [[CS]], 0
; TRACK_CONTROL_FLOW: [[CS_NE:%.*]] = icmp ne i[[#SBITS]] [[CS]], 0
; TRACK_CONTROL_FLOW: [[CFTO:%.*]] = select i1 [[CS_NE]], i32 [[CO]], i32 [[FTO]]
; TRACK_CONTROL_FLOW: store i32 [[CFTO]], i32* @__dfsan_retval_origin_tls, align 4
; NO_TRACK_CONTROL_FLOW: @"dfs$select8v"
; NO_TRACK_CONTROL_FLOW: [[FO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 2), align 4
; NO_TRACK_CONTROL_FLOW: [[TO:%.*]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; NO_TRACK_CONTROL_FLOW: [[FS:%.*]] = load i16, i16* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 4) to i16*), align 2
; NO_TRACK_CONTROL_FLOW: [[FS_NE:%.*]] = icmp ne i16 [[FS]], 0
; NO_TRACK_CONTROL_FLOW: [[FS:%.*]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([[TLS_ARR]]* @__dfsan_arg_tls to i64), i64 4) to i[[#SBITS]]*), align 2
; NO_TRACK_CONTROL_FLOW: [[FS_NE:%.*]] = icmp ne i[[#SBITS]] [[FS]], 0
; NO_TRACK_CONTROL_FLOW: [[FTO:%.*]] = select i1 [[FS_NE]], i32 [[FO]], i32 [[TO]]
; NO_TRACK_CONTROL_FLOW: store i32 [[FTO]], i32* @__dfsan_retval_origin_tls, align 4

164
llvm/test/Instrumentation/DataFlowSanitizer/origin_store.ll Normal file
View File

@ -0,0 +1,164 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels -dfsan-combine-pointer-labels-on-store -S | FileCheck %s --check-prefixes=CHECK,COMBINE_STORE_PTR
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels -S | FileCheck %s --check-prefixes=CHECK,CHECK16
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels -dfsan-combine-pointer-labels-on-store -S | FileCheck %s --check-prefixes=CHECK,CHECK16,COMBINE_STORE_PTR
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
define void @store_zero_to_non_escaped_alloca() {
; CHECK-LABEL: @"dfs$store_zero_to_non_escaped_alloca"
; CHECK-NEXT: [[A:%.*]] = alloca i[[#SBITS]], align [[#SBYTES]]
; CHECK-NEXT: %_dfsa = alloca i32, align 4
; CHECK-NEXT: %p = alloca i16, align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* [[A]], align [[#SBYTES]]
; CHECK-NEXT: store i16 1, i16* %p, align 2
; CHECK-NEXT: ret void
%p = alloca i16
store i16 1, i16* %p
ret void
}
define void @store_nonzero_to_non_escaped_alloca(i16 %a) {
; CHECK-LABEL: @"dfs$store_nonzero_to_non_escaped_alloca"
; CHECK: %[[#AO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK: %_dfsa = alloca i32, align 4
; CHECK: store i32 %[[#AO]], i32* %_dfsa, align 4
%p = alloca i16
store i16 %a, i16* %p
ret void
}
declare void @foo(i16* %p)
define void @store_zero_to_escaped_alloca() {
; CHECK-LABEL: @"dfs$store_zero_to_escaped_alloca"
; CHECK: %[[#SA:]] = bitcast i[[#SBITS]]* {{.*}} to i[[#NUM_BITS:mul(SBITS,2)]]*
; CHECK-NEXT: store i[[#NUM_BITS]] 0, i[[#NUM_BITS]]* %[[#SA]], align [[#SBYTES]]
; CHECK-NEXT: store i16 1, i16* %p, align 2
; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN:2]]
; CHECK-NEXT: call void @"dfs$foo"(i16* %p)
%p = alloca i16
store i16 1, i16* %p
call void @foo(i16* %p)
ret void
}
define void @store_nonzero_to_escaped_alloca(i16 %a) {
; CHECK-LABEL: @"dfs$store_nonzero_to_escaped_alloca"
; CHECK-NEXT: %[[#AO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; CHECK-NEXT: %[[#AS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK: %[[#INTP:]] = ptrtoint i16* %p to i64
; CHECK-NEXT: %[[#SHADOW_ADDR:]] = and i64 %[[#INTP]], [[#%.10d,MASK:]]
; CHECK16-NEXT: %[[#SHADOW_ADDR:]] = mul i64 %[[#SHADOW_ADDR]], 2
; CHECK-NEXT: %[[#SHADOW_PTR0:]] = inttoptr i64 %[[#SHADOW_ADDR]] to i[[#SBITS]]*
; CHECK-NEXT: %[[#ORIGIN_OFFSET:]] = add i64 %[[#INTP+1]], [[#%.10d,ORIGIN_MASK:]]
; CHECK-NEXT: %[[#ORIGIN_ADDR:]] = and i64 %[[#ORIGIN_OFFSET]], -4
; CHECK-NEXT: %[[#ORIGIN_PTR:]] = inttoptr i64 %[[#ORIGIN_ADDR]] to i32*
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] %[[#AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: %[[#NO:]] = call i32 @__dfsan_chain_origin(i32 %[[#AO]])
; CHECK-NEXT: store i32 %[[#NO]], i32* %[[#ORIGIN_PTR]], align 4
; CHECK-NEXT: br label %[[L2]]
; CHECK: [[L2]]:
; CHECK-NEXT: store i16 %a, i16* %p, align 2
%p = alloca i16
store i16 %a, i16* %p
call void @foo(i16* %p)
ret void
}
define void @store64_align8(i64* %p, i64 %a) {
; CHECK-LABEL: @"dfs$store64_align8"
; COMBINE_STORE_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_STORE_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#AO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: %[[#AS:]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN]]
; COMBINE_STORE_PTR-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#AS]], %[[#PS]]
; COMBINE_STORE_PTR-NEXT: %[[#NE:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_STORE_PTR-NEXT: %[[#AO:]] = select i1 %[[#NE]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] %[[#AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: %[[#NO:]] = call i32 @__dfsan_chain_origin(i32 %[[#AO]])
; CHECK-NEXT: %[[#NO_ZEXT:]] = zext i32 %[[#NO]] to i64
; CHECK-NEXT: %[[#NO_SHL:]] = shl i64 %[[#NO_ZEXT]], 32
; CHECK-NEXT: %[[#NO2:]] = or i64 %[[#NO_ZEXT]], %[[#NO_SHL]]
; CHECK-NEXT: %[[#O_PTR:]] = bitcast i32* {{.*}} to i64*
; CHECK-NEXT: store i64 %[[#NO2]], i64* %[[#O_PTR]], align 8
; CHECK-NEXT: br label %[[L2]]
; CHECK: [[L2]]:
; CHECK-NEXT: store i64 %a, i64* %p, align 8
store i64 %a, i64* %p
ret void
}
define void @store64_align2(i64* %p, i64 %a) {
; CHECK-LABEL: @"dfs$store64_align2"
; COMBINE_STORE_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_STORE_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#AO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: %[[#AS:]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN]]
; COMBINE_STORE_PTR-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#AS]], %[[#PS]]
; COMBINE_STORE_PTR-NEXT: %[[#NE:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_STORE_PTR-NEXT: %[[#AO:]] = select i1 %[[#NE]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] %[[#AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: %[[#NO:]] = call i32 @__dfsan_chain_origin(i32 %[[#AO]])
; CHECK-NEXT: store i32 %[[#NO]], i32* %[[#O_PTR0:]], align 4
; CHECK-NEXT: %[[#O_PTR1:]] = getelementptr i32, i32* %[[#O_PTR0]], i32 1
; CHECK-NEXT: store i32 %[[#NO]], i32* %[[#O_PTR1]], align 4
; CHECK: [[L2]]:
; CHECK-NEXT: store i64 %a, i64* %p, align 2
store i64 %a, i64* %p, align 2
ret void
}
define void @store96_align8(i96* %p, i96 %a) {
; CHECK-LABEL: @"dfs$store96_align8"
; COMBINE_STORE_PTR-NEXT: %[[#PO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 0), align 4
; COMBINE_STORE_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([100 x i64]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
; CHECK-NEXT: %[[#AO:]] = load i32, i32* getelementptr inbounds ([200 x i32], [200 x i32]* @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
; CHECK-NEXT: %[[#AS:]] = load i[[#SBITS]], i[[#SBITS]]* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__dfsan_arg_tls to i64), i64 2) to i[[#SBITS]]*), align [[ALIGN]]
; COMBINE_STORE_PTR-NEXT: %[[#AS:]] = or i[[#SBITS]] %[[#AS]], %[[#PS]]
; COMBINE_STORE_PTR-NEXT: %[[#NE:]] = icmp ne i[[#SBITS]] %[[#PS]], 0
; COMBINE_STORE_PTR-NEXT: %[[#AO:]] = select i1 %[[#NE]], i32 %[[#PO]], i32 %[[#AO]]
; CHECK: %_dfscmp = icmp ne i[[#SBITS]] %[[#AS]], 0
; CHECK-NEXT: br i1 %_dfscmp, label %[[L1:.*]], label %[[L2:.*]],
; CHECK: [[L1]]:
; CHECK-NEXT: %[[#NO:]] = call i32 @__dfsan_chain_origin(i32 %[[#AO]])
; CHECK-NEXT: %[[#NO_ZEXT:]] = zext i32 %[[#NO]] to i64
; CHECK-NEXT: %[[#NO_SHL:]] = shl i64 %[[#NO_ZEXT]], 32
; CHECK-NEXT: %[[#NO2:]] = or i64 %[[#NO_ZEXT]], %[[#NO_SHL]]
; CHECK-NEXT: %[[#O_PTR64:]] = bitcast i32* %[[#O_PTR0:]] to i64*
; CHECK-NEXT: store i64 %[[#NO2]], i64* %[[#O_PTR64]], align 8
; CHECK-NEXT: %[[#O_PTR1:]] = getelementptr i32, i32* %[[#O_PTR0]], i32 2
; CHECK-NEXT: store i32 %[[#NO]], i32* %[[#O_PTR1]], align 8
; CHECK: [[L2]]:
; CHECK-NEXT: store i96 %a, i96* %p, align 8
store i96 %a, i96* %p, align 8
ret void
}

3
llvm/test/Instrumentation/DataFlowSanitizer/origin_store_threshold.ll
View File

@ -1,4 +1,5 @@
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-instrument-with-call-threshold=0 -S | FileCheck %s --check-prefix=CHECK
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-8-labels=true -dfsan-instrument-with-call-threshold=0 -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -dfsan-fast-16-labels=true -dfsan-instrument-with-call-threshold=0 -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"