fix: remove target hook

Author: woruyu

llvm/include/llvm/CodeGen/TargetLowering.h

@@ -5019,10 +5019,6 @@ class LLVM_ABI TargetLowering : public TargetLoweringBase {
     return DL.isLittleEndian();
   }
 
-  virtual bool shouldExpandVectorFCANONICALIZEInVectorLegalizer() const {
-    return false;
-  }
-
   /// Returns a 0 terminated array of registers that can be safely used as
   /// scratch registers.
   virtual const MCPhysReg *getScratchRegisters(CallingConv::ID CC) const {

llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp

@@ -1311,12 +1311,10 @@ void VectorLegalizer::Expand(SDNode *Node, SmallVectorImpl<SDValue> &Results) {
     break;
   case ISD::FCANONICALIZE: {
     const TargetLowering &TLI = DAG.getTargetLoweringInfo();
-    if (TLI.shouldExpandVectorFCANONICALIZEInVectorLegalizer()) {
-      SDLoc dl(Node);
-      SDValue Result = TLI.expandFCanonicalizeWithStrictFmul(Node, dl, DAG);
-      Results.push_back(Result);
-      return;
-    }
+    SDLoc dl(Node);
+    SDValue Result = TLI.expandFCanonicalizeWithStrictFmul(Node, dl, DAG);
+    Results.push_back(Result);
+    return;
   }
   }
 

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -3313,13 +3313,6 @@ bool X86TargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm,
   return true;
 }
 
-// X86 prefers to defer vector FCANONICALIZE to DAG legalization
-// to avoid scalarization during vector legalization.
-bool X86TargetLowering::shouldExpandVectorFCANONICALIZEInVectorLegalizer()
-    const {
-  return true;
-}
-
 bool X86TargetLowering::reduceSelectOfFPConstantLoads(EVT CmpOpVT) const {
   // If we are using XMM registers in the ABI and the condition of the select is
   // a floating-point compare and we have blendv or conditional move, then it is

llvm/lib/Target/X86/X86ISelLowering.h

@@ -1524,8 +1524,6 @@ namespace llvm {
     bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
                                            Type *Ty) const override;
 
-    bool shouldExpandVectorFCANONICALIZEInVectorLegalizer() const override;
-
     bool reduceSelectOfFPConstantLoads(EVT CmpOpVT) const override;
 
     bool convertSelectOfConstantsToMath(EVT VT) const override;