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0d947d71f9
This fixes a false positive ODR violation that is reported by ASan when using LTO. In cases, where two constant globals have the same value, LTO will merge them, which breaks ASan's ODR detection. Differential Revision: https://reviews.llvm.org/D43959 llvm-svn: 327061
31 lines
1.2 KiB
LLVM
31 lines
1.2 KiB
LLVM
; RUN: opt < %s -asan -asan-module -S | FileCheck %s
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; RUN: opt < %s -asan -asan-module -constmerge -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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%struct = type { i64, i64 }
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@a = private unnamed_addr constant %struct { i64 16, i64 16 }, align 8
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@b = private unnamed_addr constant %struct { i64 16, i64 16 }, align 8
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; CHECK: @a = {{.*}} %struct
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; CHECK: @b = {{.*}} %struct
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; CHECK: @llvm.compiler.used =
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; CHECK-SAME: i8* bitcast ({ %struct, [48 x i8] }* @a to i8*)
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; CHECK-SAME: i8* bitcast ({ %struct, [48 x i8] }* @b to i8*)
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define i32 @main(i32, i8** nocapture readnone) {
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%3 = alloca %struct, align 8
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%4 = alloca %struct, align 8
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%5 = bitcast %struct* %3 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull %5, i8* bitcast (%struct* @a to i8*), i64 16, i32 8, i1 false)
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%6 = bitcast %struct* %4 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull %6, i8* bitcast (%struct* @b to i8*), i64 16, i32 8, i1 false)
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call void asm sideeffect "", "r,r,~{dirflag},~{fpsr},~{flags}"(%struct* nonnull %3, %struct* nonnull %4)
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ret i32 0
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
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