derek.holloway
7502bf64a4
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50 lines
2.6 KiB
LLVM
50 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -passes=hwasan -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 @use(ptr, 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: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null)
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; CHECK-NEXT: [[TMP1:%.*]] = call ptr @llvm.frameaddress.p0(i32 0)
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; CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[TMP1]] to i64
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; CHECK-NEXT: [[TMP3:%.*]] = lshr i64 [[TMP2]], 20
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; CHECK-NEXT: [[TMP4:%.*]] = xor i64 [[TMP2]], [[TMP3]]
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; CHECK-NEXT: [[HWASAN_STACK_BASE_TAG:%.*]] = and i64 [[TMP4]], 63
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; CHECK-NEXT: [[TMP5:%.*]] = lshr i64 [[TMP2]], 57
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; CHECK-NEXT: [[HWASAN_UAR_TAG:%.*]] = and i64 [[TMP5]], 63
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; CHECK-NEXT: [[X:%.*]] = alloca { [4 x i8], [12 x i8] }, align 16
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; CHECK-NEXT: [[TMP6:%.*]] = xor i64 [[HWASAN_STACK_BASE_TAG]], 0
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; CHECK-NEXT: [[TMP7:%.*]] = ptrtoint ptr [[X]] to i64
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; CHECK-NEXT: [[TMP8:%.*]] = and i64 [[TMP7]], -9079256848778919937
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; CHECK-NEXT: [[TMP9:%.*]] = shl i64 [[TMP6]], 57
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; CHECK-NEXT: [[TMP10:%.*]] = or i64 [[TMP8]], [[TMP9]]
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; CHECK-NEXT: [[X_HWASAN:%.*]] = inttoptr i64 [[TMP10]] to ptr
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; CHECK-NEXT: [[TMP11:%.*]] = trunc i64 [[TMP6]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP11]], i64 16)
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; CHECK-NEXT: [[Y:%.*]] = alloca i8, i64 16, align 16
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; CHECK-NEXT: [[TMP12:%.*]] = xor i64 [[HWASAN_STACK_BASE_TAG]], 1
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; CHECK-NEXT: [[TMP13:%.*]] = ptrtoint ptr [[Y]] to i64
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; CHECK-NEXT: [[TMP14:%.*]] = and i64 [[TMP13]], -9079256848778919937
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; CHECK-NEXT: [[TMP15:%.*]] = shl i64 [[TMP12]], 57
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; CHECK-NEXT: [[TMP16:%.*]] = or i64 [[TMP14]], [[TMP15]]
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; CHECK-NEXT: [[Y_HWASAN:%.*]] = inttoptr i64 [[TMP16]] to ptr
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; CHECK-NEXT: [[TMP17:%.*]] = trunc i64 [[TMP12]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[Y]], i8 [[TMP17]], i64 16)
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; CHECK-NEXT: call void @use(ptr [[X_HWASAN]], ptr [[Y_HWASAN]])
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; CHECK-NEXT: [[TMP18:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP18]], i64 16)
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; CHECK-NEXT: [[TMP19:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8
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; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[Y]], i8 [[TMP19]], i64 16)
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; CHECK-NEXT: ret void
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;
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%x = alloca i8, i64 4
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%y = alloca i8, i64 16
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call void @use(ptr %x, ptr %y)
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ret void
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}
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