[X86] Add CLWB intrinsic. llvm part

llvm-svn: 315613

2 files changed, 6 insertions, 3 deletions

diff --git a/llvm/include/llvm/IR/IntrinsicsX86.td b/llvm/include/llvm/IR/IntrinsicsX86.td
index eae8564fdf9..e31db99cede 100644
--- a/llvm/include/llvm/IR/IntrinsicsX86.td
+++ b/llvm/include/llvm/IR/IntrinsicsX86.td
@@ -3473,10 +3473,13 @@ let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
 }
 
 //===----------------------------------------------------------------------===//
-// CLFLUSHOPT
+// CLFLUSHOPT and CLWB
 let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
   def int_x86_clflushopt : GCCBuiltin<"__builtin_ia32_clflushopt">,
               Intrinsic<[], [llvm_ptr_ty], []>;
+
+  def int_x86_clwb : GCCBuiltin<"__builtin_ia32_clwb">,
+              Intrinsic<[], [llvm_ptr_ty], []>;
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index 96eb5f4538f..d5e2caa8f28 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -2698,9 +2698,9 @@ let Predicates = [HasCLFLUSHOPT] in
 def CLFLUSHOPT : I<0xAE, MRM7m, (outs), (ins i8mem:$src),
                    "clflushopt\t$src", [(int_x86_clflushopt addr:$src)]>, PD;
 
-// TODO: Add an instrincis for this.
 let Predicates = [HasCLWB] in
-def CLWB       : I<0xAE, MRM6m, (outs), (ins i8mem:$src), "clwb\t$src", []>, PD;
+def CLWB       : I<0xAE, MRM6m, (outs), (ins i8mem:$src), "clwb\t$src",
+                   [(int_x86_clwb addr:$src)]>, PD;
 
 
 //===----------------------------------------------------------------------===//