1; Make sure MSan doesn't insert shadow checks for @llvm.is.constant.* arguments.
2
3; RUN: opt < %s -msan-kernel=1 -S -passes=msan 2>&1 | FileCheck                \
4; RUN: -check-prefixes=CHECK %s
5; RUN: opt < %s -msan -msan-kernel=1 -S | FileCheck -check-prefixes=CHECK %s
6; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck -check-prefixes=CHECK %s
7; RUN: opt < %s -msan -S | FileCheck -check-prefixes=CHECK %s
8
9target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
10target triple = "x86_64-unknown-linux-gnu"
11
12; Function Attrs: nounwind readnone uwtable
13define dso_local i32 @bar(i32 %v) local_unnamed_addr sanitize_memory {
14entry:
15  %0 = tail call i1 @llvm.is.constant.i32(i32 %v)
16  %1 = zext i1 %0 to i32
17  ret i32 %1
18}
19
20; CHECK-LABEL: bar
21; CHECK-NOT: call void @__msan_warning_with_origin
22
23; Function Attrs: nounwind readnone
24declare i1 @llvm.is.constant.i32(i32)
25