Revert "[X86] Add xgetbv/x[X86] Add xgetbv xsetbv intrinsics to non-windows platforms"
This reverts commit r278783. It breaks usage of _xgetbv on Windows.
llvm-svn: 278814
diff --git a/clang/lib/Headers/intrin.h b/clang/lib/Headers/intrin.h
index aca91f3..268ac4a 100644
--- a/clang/lib/Headers/intrin.h
+++ b/clang/lib/Headers/intrin.h
@@ -289,6 +289,10 @@
void _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__
@@ -904,6 +908,12 @@
__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");