derek.holloway
7502bf64a4
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49 lines
1.3 KiB
LLVM
49 lines
1.3 KiB
LLVM
; Verify that calls with !nosanitize are not instrumented by MSan.
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; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck %s
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; RUN: opt < %s -msan-track-origins=1 -S -passes=msan 2>&1 | 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-unknown-linux-gnu"
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declare void @bar(i32 %x)
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define void @foo() {
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call void @bar(i32 7), !nosanitize !{}
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ret void
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}
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; CHECK-LABEL: define void @foo
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; CHECK-NOT: store {{.*}} @__msan_param_tls
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; CHECK: call void @bar
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; CHECK: ret void
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@__sancov_gen_ = private global [1 x i8] zeroinitializer, section "__sancov_cntrs", align 1
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define void @sancov() sanitize_memory {
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entry:
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%0 = load i8, ptr @__sancov_gen_, !nosanitize !{}
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%1 = add i8 %0, 1
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store i8 %1, ptr @__sancov_gen_, !nosanitize !{}
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ret void
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}
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; CHECK-LABEL: define void @sancov
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; CHECK-NOT: xor
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; CHECK-NOT: 87960930222080
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; CHECK: ret void
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define void @load_store() sanitize_memory {
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entry:
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%x = alloca i32, align 4, !nosanitize !{}
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store i32 4, ptr %x, align 4, !nosanitize !{}
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%0 = load i32, ptr %x, align 4, !nosanitize !{}
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%add = add nsw i32 %0, %0
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store i32 %add, ptr %x, align 4, !nosanitize !{}
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ret void
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}
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; CHECK-LABEL: define void @load_store
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; CHECK-NOT: xor
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; CHECK-NOT: 87960930222080
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; CHECK: ret void
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