forked from OSchip/llvm-project
158 lines
9.5 KiB
LLVM
158 lines
9.5 KiB
LLVM
; RUN: opt < %s -dfsan -dfsan-combine-pointer-labels-on-load=true -S | FileCheck %s --check-prefixes=CHECK,COMBINE_LOAD_PTR
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; RUN: opt < %s -dfsan -dfsan-combine-pointer-labels-on-load=false -S | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: @__dfsan_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
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; CHECK: @__dfsan_retval_tls = external thread_local(initialexec) global [[TLS_ARR]]
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; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
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; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
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define {} @load0({}* %p) {
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; CHECK-LABEL: @load0.dfsan
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; CHECK-NEXT: %a = load {}, {}* %p, align 1
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; CHECK-NEXT: store {} zeroinitializer, {}* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to {}*), align [[ALIGN:2]]
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; CHECK-NEXT: ret {} %a
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%a = load {}, {}* %p
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ret {} %a
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}
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define i8 @load8(i8* %p) {
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; CHECK-LABEL: @load8.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i8* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#%.10d,MASK:]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#SHADOW:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR]]
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i8, i8* %p
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i8 %a
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%a = load i8, i8* %p
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ret i8 %a
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}
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define i16 @load16(i16* %p) {
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; CHECK-LABEL: @load16.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i16* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#SHADOW_PTR+1]] = getelementptr i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR]], i64 1
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; CHECK-NEXT: %[[#SHADOW:]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR]]
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; CHECK-NEXT: %[[#SHADOW+1]] = load i[[#SBITS]], i[[#SBITS]]* %[[#SHADOW_PTR+1]]
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; CHECK-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#SHADOW+1]]
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i16, i16* %p
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i16 %a
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%a = load i16, i16* %p
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ret i16 %a
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}
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define i32 @load32(i32* %p) {
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; CHECK-LABEL: @load32.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i32* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i[[#WSBITS:mul(SBITS,4)]]*
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i[[#WSBITS]], i[[#WSBITS]]* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW]], [[#mul(SBITS,2)]]
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i[[#WSBITS]] %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i[[#WSBITS]] %[[#WIDE_SHADOW]], [[#SBITS]]
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i[[#WSBITS]] %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#SHADOW:]] = trunc i[[#WSBITS]] %[[#WIDE_SHADOW]] to i[[#SBITS]]
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i32, i32* %p, align 4
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i32 %a
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%a = load i32, i32* %p
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ret i32 %a
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}
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define i64 @load64(i64* %p) {
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; CHECK-LABEL: @load64.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i64* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i64*
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, i64* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i64, i64* %p, align 8
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i64 %a
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%a = load i64, i64* %p
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ret i64 %a
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}
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define i128 @load128(i128* %p) {
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; CHECK-LABEL: @load128.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i128* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#WIDE_SHADOW_PTR:]] = bitcast i[[#SBITS]]* %[[#SHADOW_PTR]] to i64*
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = load i64, i64* %[[#WIDE_SHADOW_PTR]], align [[#SBYTES]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_PTR2:]] = getelementptr i64, i64* %[[#WIDE_SHADOW_PTR]], i64 1
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; CHECK-NEXT: %[[#WIDE_SHADOW2:]] = load i64, i64* %[[#WIDE_SHADOW_PTR2]], align [[#SBYTES]]
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW2]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 32
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 16
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#WIDE_SHADOW_SHIFTED:]] = lshr i64 %[[#WIDE_SHADOW]], 8
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; CHECK-NEXT: %[[#WIDE_SHADOW:]] = or i64 %[[#WIDE_SHADOW]], %[[#WIDE_SHADOW_SHIFTED]]
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; CHECK-NEXT: %[[#SHADOW:]] = trunc i64 %[[#WIDE_SHADOW]] to i[[#SBITS]]
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i128, i128* %p, align 8
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i128 %a
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%a = load i128, i128* %p
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ret i128 %a
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}
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define i17 @load17(i17* %p) {
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; CHECK-LABEL: @load17.dfsan
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; COMBINE_LOAD_PTR-NEXT: %[[#PS:]] = load i[[#SBITS]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_arg_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: %[[#INTP:]] = ptrtoint i17* %p to i64
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; CHECK-NEXT: %[[#SHADOW_OFFSET:]] = xor i64 %[[#INTP]], [[#MASK]]
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; CHECK-NEXT: %[[#SHADOW_PTR:]] = inttoptr i64 %[[#SHADOW_OFFSET]] to i[[#SBITS]]*
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; CHECK-NEXT: %[[#SHADOW:]] = call zeroext i8 @__dfsan_union_load(i[[#SBITS]]* %[[#SHADOW_PTR]], i64 3)
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; COMBINE_LOAD_PTR-NEXT: %[[#SHADOW:]] = or i[[#SBITS]] %[[#SHADOW]], %[[#PS]]
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; CHECK-NEXT: %a = load i17, i17* %p
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; CHECK-NEXT: store i[[#SBITS]] %[[#SHADOW]], i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i17 %a
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%a = load i17, i17* %p
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ret i17 %a
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}
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@X = constant i1 1
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define i1 @load_global() {
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; CHECK-LABEL: @load_global.dfsan
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; CHECK-NEXT: %a = load i1, i1* @X
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; CHECK-NEXT: store i[[#SBITS]] 0, i[[#SBITS]]* bitcast ([[TLS_ARR]]* @__dfsan_retval_tls to i[[#SBITS]]*), align [[ALIGN]]
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; CHECK-NEXT: ret i1 %a
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%a = load i1, i1* @X
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ret i1 %a
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}
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