[X86] Make _xgetbv/_xsetbv on non-windows platforms

Summary:
This patch attempts to redo what was tried in r278783, but was reverted.

These intrinsics should be available on non-windows platforms with "xsave" feature check. But on Windows platforms they shouldn't have feature check since that's how MSVC behaves.

To accomplish this I've added a MS builtin with no feature check. And a normal gcc builtin with a feature check. When _MSC_VER is not defined _xgetbv/_xsetbv will be macros pointing to the gcc builtin name.

I've moved the forward declarations from intrin.h to immintrin.h to match the MSDN documentation and used that as the header file for the MS builtin.

I'm not super happy with this implementation, and I'm open to suggestions for better ways to do it.

Reviewers: rnk, RKSimon, spatel

Reviewed By: rnk

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D56686

9 files changed, 160 insertions, 16 deletions

diff --git a/clang/include/clang/Basic/BuiltinsX86.def b/clang/include/clang/Basic/BuiltinsX86.def
index 4ee2a705da5..e67e700314e 100644
--- a/clang/include/clang/Basic/BuiltinsX86.def
+++ b/clang/include/clang/Basic/BuiltinsX86.def
@@ -693,6 +693,10 @@ TARGET_BUILTIN(__builtin_ia32_fxsave, "vv*", "n", "fxsr")
 // XSAVE
 TARGET_BUILTIN(__builtin_ia32_xsave, "vv*ULLi", "n", "xsave")
 TARGET_BUILTIN(__builtin_ia32_xrstor, "vv*ULLi", "n", "xsave")
+TARGET_BUILTIN(__builtin_ia32_xgetbv, "ULLiUi", "n", "xsave")
+TARGET_HEADER_BUILTIN(_xgetbv, "UWiUi", "nh", "immintrin.h", ALL_MS_LANGUAGES, "")
+TARGET_BUILTIN(__builtin_ia32_xsetbv, "vUiULLi", "n", "xsave")
+TARGET_HEADER_BUILTIN(_xsetbv, "vUiUWi", "nh", "immintrin.h", ALL_MS_LANGUAGES, "")
 TARGET_BUILTIN(__builtin_ia32_xsaveopt, "vv*ULLi", "n", "xsaveopt")
 TARGET_BUILTIN(__builtin_ia32_xrstors, "vv*ULLi", "n", "xsaves")
 TARGET_BUILTIN(__builtin_ia32_xsavec, "vv*ULLi", "n", "xsavec")
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 4c17602314e..12234eb916f 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -9831,7 +9831,9 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
   case X86::BI__builtin_ia32_xsavec:
   case X86::BI__builtin_ia32_xsavec64:
   case X86::BI__builtin_ia32_xsaves:
-  case X86::BI__builtin_ia32_xsaves64: {
+  case X86::BI__builtin_ia32_xsaves64:
+  case X86::BI__builtin_ia32_xsetbv:
+  case X86::BI_xsetbv: {
     Intrinsic::ID ID;
 #define INTRINSIC_X86_XSAVE_ID(NAME) \
     case X86::BI__builtin_ia32_##NAME: \
@@ -9851,6 +9853,10 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
     INTRINSIC_X86_XSAVE_ID(xsavec64);
     INTRINSIC_X86_XSAVE_ID(xsaves);
     INTRINSIC_X86_XSAVE_ID(xsaves64);
+    INTRINSIC_X86_XSAVE_ID(xsetbv);
+    case X86::BI_xsetbv:
+      ID = Intrinsic::x86_xsetbv;
+      break;
     }
 #undef INTRINSIC_X86_XSAVE_ID
     Value *Mhi = Builder.CreateTrunc(
@@ -9860,6 +9866,9 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
     Ops.push_back(Mlo);
     return Builder.CreateCall(CGM.getIntrinsic(ID), Ops);
   }
+  case X86::BI__builtin_ia32_xgetbv:
+  case X86::BI_xgetbv:
+    return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::x86_xgetbv), Ops);
   case X86::BI__builtin_ia32_storedqudi128_mask:
   case X86::BI__builtin_ia32_storedqusi128_mask:
   case X86::BI__builtin_ia32_storedquhi128_mask:
diff --git a/clang/lib/Headers/immintrin.h b/clang/lib/Headers/immintrin.h
index 7d0722ec765..19edd4ac4a4 100644
--- a/clang/lib/Headers/immintrin.h
+++ b/clang/lib/Headers/immintrin.h
@@ -378,9 +378,8 @@ _storebe_i64(void * __P, long long __D) {
 #include <fxsrintrin.h>
 #endif
 
-#if !defined(_MSC_VER) || __has_feature(modules) || defined(__XSAVE__)
+/* No feature check desired due to internal MSC_VER checks */
 #include <xsaveintrin.h>
-#endif
 
 #if !defined(_MSC_VER) || __has_feature(modules) || defined(__XSAVEOPT__)
 #include <xsaveoptintrin.h>
diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h
index c86f41faeb8..acc08abaf03 100644
--- a/clang/lib/Headers/intrin.h
+++ b/clang/lib/Headers/intrin.h
@@ -200,10 +200,7 @@ __attribute__((__deprecated__("use other intrinsics or C++11 atomics instead")))
 _WriteBarrier(void);
 unsigned __int32 xbegin(void);
 void _xend(void);
-static __inline__
 #define _XCR_XFEATURE_ENABLED_MASK 0
-unsigned __int64 __cdecl _xgetbv(unsigned int);
-void __cdecl _xsetbv(unsigned int, unsigned __int64);
 
 /* These additional intrinsics are turned on in x64/amd64/x86_64 mode. */
 #ifdef __x86_64__
@@ -539,12 +536,6 @@ __cpuidex(int __info[4], int __level, int __ecx) {
   __asm__ ("cpuid" : "=a"(__info[0]), "=b" (__info[1]), "=c"(__info[2]), "=d"(__info[3])
                    : "a"(__level), "c"(__ecx));
 }
-static __inline__ unsigned __int64 __cdecl __DEFAULT_FN_ATTRS
-_xgetbv(unsigned int __xcr_no) {
-  unsigned int __eax, __edx;
-  __asm__ ("xgetbv" : "=a" (__eax), "=d" (__edx) : "c" (__xcr_no));
-  return ((unsigned __int64)__edx << 32) | __eax;
-}
 static __inline__ void __DEFAULT_FN_ATTRS
 __halt(void) {
   __asm__ volatile ("hlt");
diff --git a/clang/lib/Headers/xsaveintrin.h b/clang/lib/Headers/xsaveintrin.h
index 16f3a78d3f5..788f9e000b5 100644
--- a/clang/lib/Headers/xsaveintrin.h
+++ b/clang/lib/Headers/xsaveintrin.h
@@ -28,6 +28,10 @@
 #ifndef __XSAVEINTRIN_H
 #define __XSAVEINTRIN_H
 
+#ifndef _MSC_VER
+#define _XCR_XFEATURE_ENABLED_MASK 0
+#endif
+
 /* Define the default attributes for the functions in this file. */
 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__,  __target__("xsave")))
 
@@ -41,6 +45,20 @@ _xrstor(void *__p, unsigned long long __m) {
   __builtin_ia32_xrstor(__p, __m);
 }
 
+#ifndef _MSC_VER
+#define _xgetbv(A) __builtin_ia32_xgetbv((long long)(A))
+#define _xsetbv(A, B) __builtin_ia32_xsetbv((unsigned int)(A), (unsigned long long)(B));
+#else
+#ifdef __cplusplus
+extern "C" {
+#endif
+unsigned __int64 __cdecl _xgetbv(unsigned int);
+void __cdecl _xsetbv(unsigned int, unsigned __int64);
+#ifdef __cplusplus
+}
+#endif
+#endif /* _MSC_VER */
+
 #ifdef __x86_64__
 static __inline__ void __DEFAULT_FN_ATTRS
 _xsave64(void *__p, unsigned long long __m) {
@@ -51,6 +69,7 @@ static __inline__ void __DEFAULT_FN_ATTRS
 _xrstor64(void *__p, unsigned long long __m) {
   __builtin_ia32_xrstor64(__p, __m);
 }
+
 #endif
 
 #undef __DEFAULT_FN_ATTRS
diff --git a/clang/test/CodeGen/builtins-x86.c b/clang/test/CodeGen/builtins-x86.c
index fd99dd2be31..e237bc2d12b 100644
--- a/clang/test/CodeGen/builtins-x86.c
+++ b/clang/test/CodeGen/builtins-x86.c
@@ -281,6 +281,8 @@ void f0() {
 
   (void)__builtin_ia32_xsave(tmp_vp, tmp_ULLi);
   (void)__builtin_ia32_xsave64(tmp_vp, tmp_ULLi);
+  tmp_ULLi = __builtin_ia32_xgetbv(tmp_Ui);
+  (void)__builtin_ia32_xsetbv(tmp_Ui, tmp_ULLi);
   (void)__builtin_ia32_xrstor(tmp_vp, tmp_ULLi);
   (void)__builtin_ia32_xrstor64(tmp_vp, tmp_ULLi);
   (void)__builtin_ia32_xsaveopt(tmp_vp, tmp_ULLi);
diff --git a/clang/test/CodeGen/x86_32-xsave.c b/clang/test/CodeGen/x86_32-xsave.c
index f5d84e2d920..e1acdff1240 100644
--- a/clang/test/CodeGen/x86_32-xsave.c
+++ b/clang/test/CodeGen/x86_32-xsave.c
@@ -1,6 +1,9 @@
 // RUN: %clang_cc1 %s -DTEST_XSAVE -O0 -triple=i686-unknown-unknown -target-feature +xsave -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVE
 // RUN: %clang_cc1 %s -DTEST_XSAVE -O0 -triple=i686-unknown-unknown -target-feature +xsave -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVE
 
+// RUN: %clang_cc1 %s -DTEST_XGETBV -O0 -triple=i686-unknown-unknown -target-feature +xsave -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XGETBV
+// RUN: %clang_cc1 %s -DTEST_XSETBV -O0 -triple=i686-unknown-unknown -target-feature +xsave -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSETBV
+
 // RUN: %clang_cc1 %s -DTEST_XSAVEOPT -O0 -triple=i686-unknown-unknown -target-feature +xsave -target-feature +xsaveopt -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVEOPT
 // RUN: %clang_cc1 %s -DTEST_XSAVEOPT -O0 -triple=i686-unknown-unknown -target-feature +xsave -target-feature +xsaveopt -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVEOPT
 
@@ -10,9 +13,15 @@
 // RUN: %clang_cc1 %s -DTEST_XSAVES -O0 -triple=i686-unknown-unknown -target-feature +xsave -target-feature +xsaves -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVES
 // RUN: %clang_cc1 %s -DTEST_XSAVES -O0 -triple=i686-unknown-unknown -target-feature +xsave -target-feature +xsaves -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVES
 
+// Don't include mm_malloc.h, it's system specific.
+#define __MM_MALLOC_H
+#include <x86intrin.h>
+
 void test() {
-  unsigned long long tmp_ULLi = 0;
-  void*              tmp_vp = 0;
+  unsigned long long tmp_ULLi;
+  unsigned int       tmp_Ui;
+  void*              tmp_vp;
+  tmp_ULLi = 0; tmp_Ui = 0; tmp_vp = 0;
 
 #ifdef TEST_XSAVE
 // XSAVE: [[tmp_vp_1:%[0-9a-zA-Z]+]] = load i8*, i8** %tmp_vp, align 4
@@ -30,6 +39,12 @@ void test() {
 // XSAVE: [[low32_3:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_3]] to i32
 // XSAVE: call void @llvm.x86.xrstor(i8* [[tmp_vp_3]], i32 [[high32_3]], i32 [[low32_3]])
   (void)__builtin_ia32_xrstor(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xsave
+  (void)_xsave(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xrstor
+  (void)_xrstor(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVEOPT
@@ -40,6 +55,9 @@ void test() {
 // XSAVEOPT: [[low32_1:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_1]] to i32
 // XSAVEOPT: call void @llvm.x86.xsaveopt(i8* [[tmp_vp_1]], i32 [[high32_1]], i32 [[low32_1]])
   (void)__builtin_ia32_xsaveopt(tmp_vp, tmp_ULLi);
+  
+// XSAVEOPT: call void @llvm.x86.xsaveopt
+  (void)_xsaveopt(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVEC
@@ -50,6 +68,9 @@ void test() {
 // XSAVEC: [[low32_1:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_1]] to i32
 // XSAVEC: call void @llvm.x86.xsavec(i8* [[tmp_vp_1]], i32 [[high32_1]], i32 [[low32_1]])
   (void)__builtin_ia32_xsavec(tmp_vp, tmp_ULLi);
+ 
+// XSAVEC: call void @llvm.x86.xsavec 
+  (void)_xsavec(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVES
@@ -68,5 +89,34 @@ void test() {
 // XSAVES: [[low32_3:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_3]] to i32
 // XSAVES: call void @llvm.x86.xrstors(i8* [[tmp_vp_3]], i32 [[high32_3]], i32 [[low32_3]])
   (void)__builtin_ia32_xrstors(tmp_vp, tmp_ULLi);
+  
+// XSAVES: call void @llvm.x86.xsaves
+  (void)_xsaves(tmp_vp, tmp_ULLi); 
+
+// XSAVES: call void @llvm.x86.xrstors
+  (void)_xrstors(tmp_vp, tmp_ULLi);
+#endif
+
+#ifdef TEST_XGETBV
+// XGETBV: [[tmp_Ui:%[0-9a-zA-z]+]] = load i32, i32* %tmp_Ui, align 4
+// XGETBV: call i64 @llvm.x86.xgetbv(i32 [[tmp_Ui]])
+  tmp_ULLi = __builtin_ia32_xgetbv(tmp_Ui);
+  
+// XGETBV: call i64 @llvm.x86.xgetbv
+  tmp_ULLi = _xgetbv(tmp_Ui);
+#endif
+
+#ifdef TEST_XSETBV
+// XSETBV: [[tmp_Ui:%[0-9a-zA-z]+]] = load i32, i32* %tmp_Ui, align 4
+// XSETBV: [[tmp_ULLi_3:%[0-9a-zA-z]+]] = load i64, i64* %tmp_ULLi, align 8
+// XSETBV: [[high64_3:%[0-9a-zA-z]+]] = lshr i64 [[tmp_ULLi_3]], 32
+// XSETBV: [[high32_3:%[0-9a-zA-z]+]] = trunc i64 [[high64_3]] to i32
+// XSETBV: [[low32_3:%[0-9a-zA-z]+]] = trunc i64 [[tmp_ULLi_3]] to i32
+// XSETBV: call void @llvm.x86.xsetbv(i32 [[tmp_Ui]], i32 [[high32_3]], i32 [[low32_3]])
+  (void)__builtin_ia32_xsetbv(tmp_Ui, tmp_ULLi);
+  
+  // XSETBV: call void @llvm.x86.xsetbv
+  (void)_xsetbv(tmp_Ui, tmp_ULLi);
 #endif
+
 }
diff --git a/clang/test/CodeGen/x86_64-xsave.c b/clang/test/CodeGen/x86_64-xsave.c
index beb775c0e47..cfc33cb0672 100644
--- a/clang/test/CodeGen/x86_64-xsave.c
+++ b/clang/test/CodeGen/x86_64-xsave.c
@@ -1,6 +1,9 @@
 // RUN: %clang_cc1 %s -DTEST_XSAVE -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVE
 // RUN: %clang_cc1 %s -DTEST_XSAVE -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVE
 
+// RUN: %clang_cc1 %s -DTEST_XGETBV -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XGETBV
+// RUN: %clang_cc1 %s -DTEST_XSETBV -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSETBV
+
 // RUN: %clang_cc1 %s -DTEST_XSAVEOPT -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -target-feature +xsaveopt -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVEOPT
 // RUN: %clang_cc1 %s -DTEST_XSAVEOPT -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -target-feature +xsaveopt -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVEOPT
 
@@ -10,9 +13,16 @@
 // RUN: %clang_cc1 %s -DTEST_XSAVES -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -target-feature +xsaves -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVES
 // RUN: %clang_cc1 %s -DTEST_XSAVES -O0 -triple=x86_64-unknown-unknown -target-feature +xsave -target-feature +xsaves -fno-signed-char -emit-llvm -o - -Wall -Werror | FileCheck %s --check-prefix=XSAVES
 
+// Don't include mm_malloc.h, it's system specific.
+#define __MM_MALLOC_H
+#include <x86intrin.h>
+
+
 void test() {
-  unsigned long long tmp_ULLi = 0;
-  void*              tmp_vp = 0;
+  unsigned long long tmp_ULLi;
+  unsigned int       tmp_Ui;
+  void*              tmp_vp;
+  tmp_ULLi = 0; tmp_Ui = 0; tmp_vp = 0;
 
 #ifdef TEST_XSAVE
 // XSAVE: [[tmp_vp_1:%[0-9a-zA-Z]+]] = load i8*, i8** %tmp_vp, align 8
@@ -46,6 +56,18 @@ void test() {
 // XSAVE: [[low32_4:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_4]] to i32
 // XSAVE: call void @llvm.x86.xrstor64(i8* [[tmp_vp_4]], i32 [[high32_4]], i32 [[low32_4]])
   (void)__builtin_ia32_xrstor64(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xsave
+  (void)_xsave(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xsave64
+  (void)_xsave64(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xrstor
+  (void)_xrstor(tmp_vp, tmp_ULLi);
+  
+// XSAVE: call void @llvm.x86.xrstor64
+  (void)_xrstor64(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVEOPT
@@ -64,6 +86,12 @@ void test() {
 // XSAVEOPT: [[low32_2:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_2]] to i32
 // XSAVEOPT: call void @llvm.x86.xsaveopt64(i8* [[tmp_vp_2]], i32 [[high32_2]], i32 [[low32_2]])
   (void)__builtin_ia32_xsaveopt64(tmp_vp, tmp_ULLi);
+  
+// XSAVEOPT: call void @llvm.x86.xsaveopt
+  (void)_xsaveopt(tmp_vp, tmp_ULLi);
+  
+// XSAVEOPT: call void @llvm.x86.xsaveopt64
+  (void)_xsaveopt64(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVEC
@@ -82,6 +110,12 @@ void test() {
 // XSAVEC: [[low32_2:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_2]] to i32
 // XSAVEC: call void @llvm.x86.xsavec64(i8* [[tmp_vp_2]], i32 [[high32_2]], i32 [[low32_2]])
   (void)__builtin_ia32_xsavec64(tmp_vp, tmp_ULLi);
+  
+// XSAVEC: call void @llvm.x86.xsavec 
+  (void)_xsavec(tmp_vp, tmp_ULLi);
+  
+// XSAVEC: call void @llvm.x86.xsavec64
+  (void)_xsavec64(tmp_vp, tmp_ULLi);
 #endif
 
 #ifdef TEST_XSAVES
@@ -116,5 +150,39 @@ void test() {
 // XSAVES: [[low32_4:%[0-9a-zA-Z]+]] = trunc i64 [[tmp_ULLi_4]] to i32
 // XSAVES: call void @llvm.x86.xrstors64(i8* [[tmp_vp_4]], i32 [[high32_4]], i32 [[low32_4]])
   (void)__builtin_ia32_xrstors64(tmp_vp, tmp_ULLi);
+  
+// XSAVES: call void @llvm.x86.xsaves
+  (void)_xsaves(tmp_vp, tmp_ULLi); 
+  
+// XSAVES: call void @llvm.x86.xsaves64
+  (void)_xsaves64(tmp_vp, tmp_ULLi); 
+
+// XSAVES: call void @llvm.x86.xrstors
+  (void)_xrstors(tmp_vp, tmp_ULLi);
+  
+// XSAVES: call void @llvm.x86.xrstors64
+  (void)_xrstors64(tmp_vp, tmp_ULLi);
+#endif
+
+#ifdef TEST_XGETBV
+// XGETBV: [[tmp_Ui:%[0-9a-zA-z]+]] = load i32, i32* %tmp_Ui, align 4
+// XGETBV: call i64 @llvm.x86.xgetbv(i32 [[tmp_Ui]])
+  tmp_ULLi = __builtin_ia32_xgetbv(tmp_Ui);
+  
+// XGETBV: call i64 @llvm.x86.xgetbv
+  tmp_ULLi = _xgetbv(tmp_Ui);
+#endif
+
+#ifdef TEST_XSETBV
+// XSETBV: [[tmp_Ui:%[0-9a-zA-z]+]] = load i32, i32* %tmp_Ui, align 4
+// XSETBV: [[tmp_ULLi_3:%[0-9a-zA-z]+]] = load i64, i64* %tmp_ULLi, align 8
+// XSETBV: [[high64_3:%[0-9a-zA-z]+]] = lshr i64 [[tmp_ULLi_3]], 32
+// XSETBV: [[high32_3:%[0-9a-zA-z]+]] = trunc i64 [[high64_3]] to i32
+// XSETBV: [[low32_3:%[0-9a-zA-z]+]] = trunc i64 [[tmp_ULLi_3]] to i32
+// XSETBV: call void @llvm.x86.xsetbv(i32 [[tmp_Ui]], i32 [[high32_3]], i32 [[low32_3]])
+  (void)__builtin_ia32_xsetbv(tmp_Ui, tmp_ULLi);
+  
+  // XSETBV: call void @llvm.x86.xsetbv
+  (void)_xsetbv(tmp_Ui, tmp_ULLi);
 #endif
 }
diff --git a/clang/test/Headers/ms-intrin.cpp b/clang/test/Headers/ms-intrin.cpp
index b0fef9cc06a..18bb7982037 100644
--- a/clang/test/Headers/ms-intrin.cpp
+++ b/clang/test/Headers/ms-intrin.cpp
@@ -49,7 +49,9 @@ void f() {
   int info[4];
   __cpuid(info, 0);
   __cpuidex(info, 0, 0);
+#if defined(_M_X64) || defined(_M_IX86)
   _xgetbv(0);
+#endif
   __halt();
   __nop();
   __readmsr(0);