[X86][AVX512] Tag CLWB instruction to CLFLUSH/PREFETCH scheduler class

llvm-svn: 320156

diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index 1a495bf56df14cfee3fd29428aa4232f0429ee44..eed129a1fa005fcdcfb8b42b131c2c7d1a1f2891 100644 (file)
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -2723,10 +2723,9 @@ def CLFLUSHOPT : I<0xAE, MRM7m, (outs), (ins i8mem:$src),
                    "clflushopt\t$src", [(int_x86_clflushopt addr:$src)],
                    IIC_SSE_PREFETCH>, PD;
 
-let Predicates = [HasCLWB] in
+let Predicates = [HasCLWB], SchedRW = [WriteLoad] in
 def CLWB       : I<0xAE, MRM6m, (outs), (ins i8mem:$src), "clwb\t$src",
-                   [(int_x86_clwb addr:$src)]>, PD;
-
+                   [(int_x86_clwb addr:$src)], IIC_SSE_PREFETCH>, PD;
 
 //===----------------------------------------------------------------------===//
 // Subsystems.