forked from OSchip/llvm-project
191 lines
9.6 KiB
LLVM
191 lines
9.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=hwasan -hwasan-use-after-scope=1 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=SCOPE
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; RUN: opt -passes=hwasan -hwasan-use-after-scope=0 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=NOSCOPE
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; ModuleID = 'use-after-scope.c'
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source_filename = "use-after-scope.c"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local i32 @standard_lifetime() local_unnamed_addr sanitize_hwaddress {
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; SCOPE-LABEL: @standard_lifetime(
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; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; SCOPE-NEXT: br label [[TMP8:%.*]]
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; SCOPE: 8:
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; SCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP4]] to i8
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP9]], i64 16)
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; SCOPE-NEXT: [[TMP10:%.*]] = tail call i1 (...) @cond()
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; SCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP8]]
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; SCOPE: 11:
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; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: ret i32 0
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;
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; NOSCOPE-LABEL: @standard_lifetime(
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; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
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; NOSCOPE-NEXT: br label [[TMP9:%.*]]
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; NOSCOPE: 9:
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; NOSCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: [[TMP10:%.*]] = tail call i1 (...) @cond()
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; NOSCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP9]]
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; NOSCOPE: 11:
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; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; NOSCOPE-NEXT: ret i32 0
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;
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%1 = alloca i8, align 1
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br label %2
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2: ; preds = %2, %0
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; We should tag the memory after the br (in the loop).
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call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
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%3 = tail call i1 (...) @cond() #2
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; We should tag the memory before the next br (before the jump back).
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call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
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br i1 %3, label %4, label %2
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4: ; preds = %2
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call void @use(i8* nonnull %1) #2
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ret i32 0
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}
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define dso_local i32 @multiple_lifetimes() local_unnamed_addr sanitize_hwaddress {
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; SCOPE-LABEL: @multiple_lifetimes(
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; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; SCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
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; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; SCOPE-NEXT: ret i32 0
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;
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; NOSCOPE-LABEL: @multiple_lifetimes(
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; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
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; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; NOSCOPE-NEXT: ret i32 0
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;
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%1 = alloca i8, align 1
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; We erase lifetime markers if we insert instrumentation outside of the
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; lifetime.
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call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
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call void @use(i8* nonnull %1) #2
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call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
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call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
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call void @use(i8* nonnull %1) #2
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call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
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ret i32 0
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}
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define dso_local i32 @unreachable_exit() local_unnamed_addr sanitize_hwaddress {
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; SCOPE-LABEL: @unreachable_exit(
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; SCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; SCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; SCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; SCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; SCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; SCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; SCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; SCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; SCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; SCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
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; SCOPE-NEXT: [[TMP9:%.*]] = tail call i1 (...) @cond()
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; SCOPE-NEXT: br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]]
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; SCOPE: 10:
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; SCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; SCOPE-NEXT: ret i32 0
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; SCOPE: 11:
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; SCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; SCOPE-NEXT: ret i32 0
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;
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; NOSCOPE-LABEL: @unreachable_exit(
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; NOSCOPE-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call i8* asm "", "=r,0"(i8* null)
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; NOSCOPE-NEXT: [[TMP1:%.*]] = alloca { i8, [15 x i8] }, align 16
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; NOSCOPE-NEXT: [[TMP2:%.*]] = bitcast { i8, [15 x i8] }* [[TMP1]] to i8*
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; NOSCOPE-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; NOSCOPE-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; NOSCOPE-NEXT: [[TMP5:%.*]] = ptrtoint i8* [[TMP2]] to i64
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; NOSCOPE-NEXT: [[TMP6:%.*]] = shl i64 [[TMP4]], 57
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; NOSCOPE-NEXT: [[TMP7:%.*]] = or i64 [[TMP5]], [[TMP6]]
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; NOSCOPE-NEXT: [[ALLOCA_0_HWASAN:%.*]] = inttoptr i64 [[TMP7]] to i8*
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; NOSCOPE-NEXT: [[TMP8:%.*]] = trunc i64 [[TMP4]] to i8
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 [[TMP8]], i64 16)
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; NOSCOPE-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: [[TMP9:%.*]] = tail call i1 (...) @cond()
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; NOSCOPE-NEXT: br i1 [[TMP9]], label [[TMP10:%.*]], label [[TMP11:%.*]]
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; NOSCOPE: 10:
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; NOSCOPE-NEXT: call void @use(i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull [[ALLOCA_0_HWASAN]])
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; NOSCOPE-NEXT: ret i32 0
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; NOSCOPE: 11:
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; NOSCOPE-NEXT: call void @__hwasan_tag_memory(i8* [[TMP2]], i8 0, i64 16)
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; NOSCOPE-NEXT: ret i32 0
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;
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%1 = alloca i8, align 1
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call void @llvm.lifetime.start.p0i8(i64 1, i8* nonnull %1)
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%2 = tail call i1 (...) @cond() #2
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br i1 %2, label %3, label %4
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3:
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call void @use(i8* nonnull %1) #2
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call void @llvm.lifetime.end.p0i8(i64 1, i8* nonnull %1)
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ret i32 0
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4:
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ret i32 0
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}
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declare dso_local i1 @cond(...) local_unnamed_addr
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declare dso_local void @use(i8*) local_unnamed_addr
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; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
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declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
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; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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