AMDGPU: Use srcvalue and delete Ignore complex pattern (#161359)

Author: petar-avramovic

llvm/lib/Target/AMDGPU/AMDGPUGISel.td

@@ -13,10 +13,6 @@
 include "AMDGPU.td"
 include "AMDGPUCombine.td"
 
-def gi_ignore :
-    GIComplexOperandMatcher<s32, "selectIgnore">,
-    GIComplexPatternEquiv<Ignore>;
-
 def sd_vsrc0 : ComplexPattern<i32, 1, "">;
 def gi_vsrc0 :
     GIComplexOperandMatcher<s32, "selectVSRC0">,

llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp

@@ -4312,8 +4312,6 @@ bool AMDGPUDAGToDAGISel::SelectBITOP3(SDValue In, SDValue &Src0, SDValue &Src1,
   return true;
 }
 
-bool AMDGPUDAGToDAGISel::SelectIgnore(SDValue In) const { return true; }
-
 SDValue AMDGPUDAGToDAGISel::getHi16Elt(SDValue In) const {
   if (In.isUndef())
     return CurDAG->getUNDEF(MVT::i32);

llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.h

@@ -305,8 +305,6 @@ class AMDGPUDAGToDAGISel : public SelectionDAGISel {
   void SelectWAVE_ADDRESS(SDNode *N);
   void SelectSTACKRESTORE(SDNode *N);
 
-  bool SelectIgnore(SDValue In) const;
-
 protected:
   // Include the pieces autogenerated from the target description.
 #include "AMDGPUGenDAGISel.inc"

llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp

@@ -4266,14 +4266,6 @@ Register AMDGPUInstructionSelector::copyToVGPRIfSrcFolded(
   return Src;
 }
 
-InstructionSelector::ComplexRendererFns
-AMDGPUInstructionSelector::selectIgnore(MachineOperand &Root) const {
-  // Don't render anything.
-  ComplexRendererFns Renderers;
-  Renderers.emplace();
-  return Renderers;
-}
-
 ///
 /// This will select either an SGPR or VGPR operand and will save us from
 /// having to write an extra tablegen pattern.

llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h

@@ -166,9 +166,6 @@ class AMDGPUInstructionSelector final : public InstructionSelector {
                                  MachineOperand Root, MachineInstr *InsertPt,
                                  bool ForceVGPR = false) const;
 
-  InstructionSelector::ComplexRendererFns
-  selectIgnore(MachineOperand &Root) const;
-
   InstructionSelector::ComplexRendererFns
   selectVCSRC(MachineOperand &Root) const;
 

llvm/lib/Target/AMDGPU/SIInstrInfo.td

@@ -1710,8 +1710,6 @@ def VOP3PMadMixBF16Mods : ComplexPattern<untyped, 2, "SelectVOP3PMadMixBF16Mods"
 def VINTERPMods  : ComplexPattern<untyped, 2, "SelectVINTERPMods">;
 def VINTERPModsHi  : ComplexPattern<untyped, 2, "SelectVINTERPModsHi">;
 
-def Ignore : ComplexPattern<untyped, 0, "SelectIgnore">;
-
 //===----------------------------------------------------------------------===//
 // SI assembler operands
 //===----------------------------------------------------------------------===//

llvm/lib/Target/AMDGPU/SOPInstructions.td

@@ -1617,7 +1617,7 @@ def S_BARRIER_WAIT : SOPP_Pseudo <"s_barrier_wait", (ins i16imm:$simm16), "$simm
 }
 
   def S_BARRIER_LEAVE : SOPP_Pseudo <"s_barrier_leave",
-    (ins), "", [(int_amdgcn_s_barrier_leave (Ignore))] > {
+    (ins), "", [(int_amdgcn_s_barrier_leave (i16 srcvalue))] > {
   let SchedRW = [WriteBarrier];
   let simm16 = 0;
   let fixed_imm = 1;