It would emit @llvm.memcpy with "-triple x86_64-(mingw32|win32)" and had been failing since Nick's r185735.
; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@185796
91177308-0d34-0410-b5e6-
96231b3b80d8
-// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
// XFAIL: mips
+// It could hit in @llvm.memcpy with "-triple x86_64-(mingw32|win32)".
// CHECK-NOT: readonly
// CHECK-NOT: readnone