Update the intel intrinsic headers to use the target attribute support.

This involved removing the conditional inclusion and replacing them
with target attributes matching the original conditional inclusion
and checks. The testcase update removes the macro checks for each
file and replaces them with usage of the __target__ attribute, e.g.:

int __attribute__((__target__(("sse3")))) foo(int a) {
  _mm_mwait(0, 0);
  return 4;
}

This usage does require the enclosing function have the requisite
__target__ attribute for inlining and code generation - also for
any macro intrinsic uses in the enclosing function. There's no change
for existing uses of the intrinsic headers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239883 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 5 deletions

diff --git a/lib/Headers/popcntintrin.h b/lib/Headers/popcntintrin.h
index 79d12f85c7..fede8da2bd 100644
--- a/lib/Headers/popcntintrin.h
+++ b/lib/Headers/popcntintrin.h
@@ -21,15 +21,11 @@
  *===-----------------------------------------------------------------------===
  */
 
-#ifndef __POPCNT__
-#error "POPCNT instruction set not enabled"
-#endif
-
 #ifndef _POPCNTINTRIN_H
 #define _POPCNTINTRIN_H
 
 /* Define the default attributes for the functions in this file. */
-#define DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__))
+#define DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("popcnt")))
 
 static __inline__ int DEFAULT_FN_ATTRS
 _mm_popcnt_u32(unsigned int __A)