[X86] Introduce wbinvd intrinsic

A previously missing intrinsic for an old instruction. Reviewers: craig.topper, echristo Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D45311 llvm-svn: 329937
llvm · Apr 12, 2018 · e708a09 · e708a09
1 parent 297c138
commit e708a09
Show file tree

Hide file tree

Showing 3 changed files with 17 additions and 1 deletion.
diff --git a/clang/include/clang/Basic/BuiltinsX86.def b/clang/include/clang/Basic/BuiltinsX86.def
@@ -679,7 +679,8 @@ TARGET_BUILTIN(__builtin_ia32_clflushopt, "vvC*", "", "clflushopt")
 //CLWB
 TARGET_BUILTIN(__builtin_ia32_clwb, "vvC*", "", "clwb")
 
-//WBNOINVD
+//WB[NO]INVD
+TARGET_BUILTIN(__builtin_ia32_wbinvd, "v", "", "")
 TARGET_BUILTIN(__builtin_ia32_wbnoinvd, "v", "", "wbnoinvd")
 
 // ADX

diff --git a/clang/lib/Headers/ia32intrin.h b/clang/lib/Headers/ia32intrin.h
@@ -70,4 +70,9 @@ __rdtscp(unsigned int *__A) {
 
 #define _rdpmc(A) __rdpmc(A)
 
+static __inline__ void __attribute__((__always_inline__, __nodebug__))
+_wbinvd(void) {
+  return __builtin_ia32_wbinvd();
+}
+
 #endif /* __IA32INTRIN_H */
diff --git a/clang/test/CodeGen/builtin-wbinvd.c b/clang/test/CodeGen/builtin-wbinvd.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 %s -ffreestanding -triple=x86_64-unknown-unknown -emit-llvm -o - -Wall -Werror | FileCheck %s
+// RUN: %clang_cc1 %s -ffreestanding -triple=i386-unknown-unknown -emit-llvm -o - -Wall -Werror | FileCheck %s
+
+#include <x86intrin.h>
+
+void test_wbinvd(void) {
+  //CHECK-LABEL: @test_wbinvd
+  //CHECK: call void @llvm.x86.wbinvd()
+  _wbinvd();
+}