[PATCH] D45312: Introduce LLVM wbinvd intrinsic
Gabor Buella via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Apr 5 02:04:13 PDT 2018
GBuella created this revision.
GBuella added reviewers: craig.topper, echristo.
Herald added a subscriber: llvm-commits.
A previously missing intrinsic for an old instruction.
Repository:
rL LLVM
https://reviews.llvm.org/D45312
Files:
include/llvm/IR/IntrinsicsX86.td
lib/Target/X86/X86InstrSystem.td
test/CodeGen/X86/wbinvd-intrinsic.ll
Index: test/CodeGen/X86/wbinvd-intrinsic.ll
===================================================================
--- /dev/null
+++ test/CodeGen/X86/wbinvd-intrinsic.ll
@@ -0,0 +1,19 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=i686
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=x86_64
+
+define void @test_wbinvd() {
+; i686-LABEL: test_wbinvd:
+; i686: # %bb.0:
+; i686-NEXT: wbinvd
+; i686-NEXT: retl
+;
+; x86_64-LABEL: test_wbinvd:
+; x86_64: # %bb.0:
+; x86_64-NEXT: wbinvd
+; x86_64-NEXT: retq
+ call void @llvm.x86.wbinvd()
+ ret void
+}
+
+declare void @llvm.x86.wbinvd()
Index: lib/Target/X86/X86InstrSystem.td
===================================================================
--- lib/Target/X86/X86InstrSystem.td
+++ lib/Target/X86/X86InstrSystem.td
@@ -481,7 +481,8 @@
// Cache instructions
let SchedRW = [WriteSystem] in {
def INVD : I<0x08, RawFrm, (outs), (ins), "invd", [], IIC_INVD>, TB;
-def WBINVD : I<0x09, RawFrm, (outs), (ins), "wbinvd", [], IIC_INVD>, TB;
+def WBINVD : I<0x09, RawFrm, (outs), (ins), "wbinvd",
+ [(int_x86_wbinvd)], IIC_INVD>, TB;
} // SchedRW
//===----------------------------------------------------------------------===//
Index: include/llvm/IR/IntrinsicsX86.td
===================================================================
--- include/llvm/IR/IntrinsicsX86.td
+++ include/llvm/IR/IntrinsicsX86.td
@@ -6421,3 +6421,10 @@
def int_x86_clzero : GCCBuiltin<"__builtin_ia32_clzero">,
Intrinsic<[], [llvm_ptr_ty], []>;
}
+
+//===----------------------------------------------------------------------===//
+// Cache write back intrinsics
+let TargetPrefix = "x86" in {
+ def int_x86_wbinvd : GCCBuiltin<"__builtin_ia32_wbinvd">,
+ Intrinsic<[], [], []>;
+}
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