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[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
This commit is contained in:
Craig Topper 2018-04-10 18:43:44 +00:00
parent f0da8db07f
commit 7348635232
1 changed files with 7 additions and 0 deletions
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7
test/CodeGen/ms-inline-asm.c
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@ -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;