forked from OSchip/llvm-project
25 lines
859 B
LLVM
25 lines
859 B
LLVM
; Make sure MSan doesn't insert shadow checks for @llvm.is.constant.* arguments.
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; RUN: opt < %s -msan-kernel=1 -S -passes=msan 2>&1 | FileCheck \
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; RUN: -check-prefixes=CHECK %s
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; RUN: opt < %s -msan -msan-kernel=1 -S | FileCheck -check-prefixes=CHECK %s
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; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck -check-prefixes=CHECK %s
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; RUN: opt < %s -msan -S | FileCheck -check-prefixes=CHECK %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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; Function Attrs: nounwind readnone uwtable
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define dso_local i32 @bar(i32 %v) local_unnamed_addr sanitize_memory {
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entry:
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%0 = tail call i1 @llvm.is.constant.i32(i32 %v)
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%1 = zext i1 %0 to i32
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ret i32 %1
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}
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; CHECK-LABEL: bar
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; CHECK-NOT: call void @__msan_warning
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; Function Attrs: nounwind readnone
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declare i1 @llvm.is.constant.i32(i32)
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