From: Craig Topper <craig.topper@intel.com>
Date: Tue, 10 Apr 2018 18:43:44 +0000 (+0000)
Subject: [X86] Add test case for llvm change r329734
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=73486352323f5466a1d1c567221559a98fce742b;p=clang

[X86] Add test case for llvm change r329734

This test ensures the popfd instruction in MS inline assembly can properly find a clobber name for the dirflag register. Previously the register was named 'DF', but it needs to be named 'dirflag' to match the name in the GCC register name list.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@329738 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/ms-inline-asm.c b/test/CodeGen/ms-inline-asm.c
index 5c3e3ff2a8..edcbaa8aa4 100644
--- a/test/CodeGen/ms-inline-asm.c
+++ b/test/CodeGen/ms-inline-asm.c
@@ -754,6 +754,13 @@ void mxcsr() {
 // CHECK-LABEL: define void @mxcsr
 // CHECK: call void asm sideeffect inteldialect "fxrstor $0", "=*m,~{dirflag},~{fpsr},~{flags}"
 
+// Make sure we can find the register for the dirflag for popfd
+void dirflag() {
+  __asm popfd
+}
+// CHECK-LABEL: define void @dirflag
+// CHECK: call void asm sideeffect inteldialect "popfd", "~{dirflag},~{flags},~{esp},~{dirflag},~{fpsr},~{flags}"
+
 typedef union _LARGE_INTEGER {
   struct {
     unsigned int LowPart;