1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-feature +prfchw -emit-llvm -o - %s | FileCheck %s
2 
3 // Don't include mm_malloc.h, it's system specific.
4 #define __MM_MALLOC_H
5 
6 #include <x86intrin.h>
7 
8 void prefetch_w(void *p) {
9   return _m_prefetchw(p);
10 // CHECK: @prefetch_w
11 // CHECK: call void @llvm.prefetch({{.*}}, i32 1, i32 3, i32 1)
12 }
13