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