Add popcnt feature flag to match gcc. This flag is implied when sse42 is enabled, but can be disabled separately. Move popcnt intrinsics to popcntintrin.h to match gcc.

llvm-svn: 147340

1 files changed, 16 insertions, 0 deletions

diff --git a/clang/test/CodeGen/popcnt-builtins.c b/clang/test/CodeGen/popcnt-builtins.c
new file mode 100644
index 00000000000..f072b29cd1d
--- /dev/null
+++ b/clang/test/CodeGen/popcnt-builtins.c
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 %s -O3 -triple=x86_64-apple-darwin -target-feature +popcnt -emit-llvm -o - | FileCheck %s
+
+// Don't include mm_malloc.h, it's system specific.
+#define __MM_MALLOC_H
+
+#include <x86intrin.h>
+
+unsigned int test_mm_popcnt_u32(unsigned int __X) {
+  // CHECK: @llvm.ctpop.i32
+  return _mm_popcnt_u32(__X);
+}
+
+unsigned long long test_mm_popcnt_u64(unsigned long long __X) {
+  // CHECK: @llvm.ctpop.i64
+  return _mm_popcnt_u64(__X);
+}