2 files changed, 14 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index eeaffe9609a..53a1800a2b9 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4122,6 +4122,18 @@ bool X86TargetLowering::isCheapToSpeculateCtlz() const {
   return Subtarget.hasLZCNT();
 }
 
+bool X86TargetLowering::hasAndNotCompare(SDValue Y) const {
+  if (!Subtarget.hasBMI())
+    return false;
+
+  // There are only 32-bit and 64-bit forms for 'andn'.
+  EVT VT = Y.getValueType();
+  if (VT != MVT::i32 && VT != MVT::i64)
+    return false;
+
+  return true;
+}
+
 /// Return true if every element in Mask, beginning
 /// from position Pos and ending in Pos+Size is undef.
 static bool isUndefInRange(ArrayRef<int> Mask, unsigned Pos, unsigned Size) {
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
index 3a99d4d089f..52c4553082d 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -751,6 +751,8 @@ namespace llvm {
 
     bool isCheapToSpeculateCtlz() const override;
 
+    bool hasAndNotCompare(SDValue Y) const override;
+
     /// Return the value type to use for ISD::SETCC.
     EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
                            EVT VT) const override;