[PATCH] D45311: Introduce wbinvd intrinsic

[Gabor Buella via Phabricator via cfe-commits]

GBuella created this revision.
GBuella added reviewers: craig.topper, echristo.
Herald added a subscriber: cfe-commits.

A previously missing intrinsic for an old instruction.


Repository:
  rC Clang

https://reviews.llvm.org/D45311

Files:
  include/clang/Basic/BuiltinsX86.def
  lib/Headers/ia32intrin.h
  test/CodeGen/builtin-wbinvd.c


Index: test/CodeGen/builtin-wbinvd.c
===================================================================
--- /dev/null
+++ 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: @llvm.x86.wbinvd
+  _wbinvd();
+}
Index: lib/Headers/ia32intrin.h
===================================================================
--- lib/Headers/ia32intrin.h
+++ lib/Headers/ia32intrin.h
@@ -70,4 +70,9 @@
 
 #define _rdpmc(A) __rdpmc(A)
 
+static __inline__ void __attribute__((__always_inline__, __nodebug__))
+_wbinvd(void) {
+  return __builtin_ia32_wbinvd();
+}
+
 #endif /* __IA32INTRIN_H */
Index: include/clang/Basic/BuiltinsX86.def
===================================================================
--- include/clang/Basic/BuiltinsX86.def
+++ include/clang/Basic/BuiltinsX86.def
@@ -679,6 +679,8 @@
 //CLWB
 TARGET_BUILTIN(__builtin_ia32_clwb, "vvC*", "", "clwb")
 
+TARGET_BUILTIN(__builtin_ia32_wbinvd, "v", "", "")
+
 // ADX
 TARGET_BUILTIN(__builtin_ia32_addcarryx_u32, "UcUcUiUiUi*", "", "adx")
 TARGET_BUILTIN(__builtin_ia32_addcarry_u32, "UcUcUiUiUi*", "", "")


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