derek.holloway
7502bf64a4
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41 lines
1.8 KiB
LLVM
41 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; Test alloca instrumentation when tags are generated by HWASan function.
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;
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; RUN: opt < %s -passes=hwasan -hwasan-generate-tags-with-calls -S | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @use32(ptr)
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define void @test_alloca() sanitize_hwaddress {
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; CHECK-LABEL: define void @test_alloca
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] personality ptr @__hwasan_personality_thunk {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
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; CHECK-NEXT: [[TMP0:%.*]] = call ptr @llvm.frameaddress.p0(i32 0)
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[TMP0]] to i64
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; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 57
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; CHECK-NEXT: [[HWASAN_UAR_TAG:%.*]] = and i64 [[TMP2]], 63
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; CHECK-NEXT: [[X:%.*]] = alloca { i32, [12 x i8] }, align 16
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; CHECK-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag()
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; CHECK-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
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; CHECK-NEXT: [[TMP5:%.*]] = ptrtoint ptr [[X]] to i64
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; CHECK-NEXT: [[TMP6:%.*]] = and i64 [[TMP5]], -9079256848778919937
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; CHECK-NEXT: [[TMP7:%.*]] = shl i64 [[TMP4]], 57
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; CHECK-NEXT: [[TMP8:%.*]] = or i64 [[TMP6]], [[TMP7]]
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; CHECK-NEXT: [[X_HWASAN:%.*]] = inttoptr i64 [[TMP8]] to ptr
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; CHECK-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP4]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP9]], i64 16)
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; CHECK-NEXT: call void @use32(ptr nonnull [[X_HWASAN]])
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; CHECK-NEXT: [[TMP10:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP10]], i64 16)
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; CHECK-NEXT: ret void
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;
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entry:
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%x = alloca i32, align 4
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call void @use32(ptr nonnull %x)
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ret void
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}
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