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012cdf1364
If a function has no_sanitize_thread attribute, do not instrument memory accesses in it. llvm-svn: 192871
37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; RUN: opt < %s -tsan -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"
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target triple = "x86_64-unknown-linux-gnu"
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; no sanitize_thread attribute here
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define i32 @read_4_bytes(i32* %a) {
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entry:
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%tmp1 = load i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK: define i32 @read_4_bytes(i32* %a) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %tmp1 = load i32* %a, align 4
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; CHECK: ret i32 %tmp1
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; no sanitize_thread attribute here
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define i32 @read_4_bytes_and_call(i32* %a) {
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entry:
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call void @foo()
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%tmp1 = load i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK: define i32 @read_4_bytes_and_call(i32* %a) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %0 = call i8* @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__tsan_func_entry(i8* %0)
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: %tmp1 = load i32* %a, align 4
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; CHECK-NEXT: call void @__tsan_func_exit()
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; CHECK-NEXT: ret i32 %tmp1
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declare void @foo()
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