[X86] Add test for clflushopt intrinsic and only enable it to be selected if the feature flag is set.
llvm-svn: 294407
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index 7087fe9..7bdf2bd 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -862,6 +862,7 @@
def FPStackf32 : Predicate<"!Subtarget->hasSSE1()">;
def FPStackf64 : Predicate<"!Subtarget->hasSSE2()">;
def HasMPX : Predicate<"Subtarget->hasMPX()">;
+def HasCLFLUSHOPT : Predicate<"Subtarget->hasCLFLUSHOPT()">;
def HasCmpxchg16b: Predicate<"Subtarget->hasCmpxchg16b()">;
def Not64BitMode : Predicate<"!Subtarget->is64Bit()">,
AssemblerPredicate<"!Mode64Bit", "Not 64-bit mode">;
@@ -2529,6 +2530,7 @@
// Memory Instructions
//
+let Predicates = [HasCLFLUSHOPT] in
def CLFLUSHOPT : I<0xAE, MRM7m, (outs), (ins i8mem:$src),
"clflushopt\t$src", [(int_x86_clflushopt addr:$src)]>, PD;
def CLWB : I<0xAE, MRM6m, (outs), (ins i8mem:$src), "clwb\t$src", []>, PD;
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index f9ae5a4..633c7ad 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -487,6 +487,7 @@
bool hasVLX() const { return HasVLX; }
bool hasPKU() const { return HasPKU; }
bool hasMPX() const { return HasMPX; }
+ bool hasCLFLUSHOPT() const { return HasCLFLUSHOPT; }
bool isXRaySupported() const override { return is64Bit(); }