[PATCH] D110226: [InstCombine] Update InstCombine to use poison instead of undef for shufflevector's placeholder (1/3)

[Hyeongyu Kim via Phabricator via cfe-commits]

hyeongyukim updated this revision to Diff 374212.
hyeongyukim added a comment.

Rebase


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110226/new/

https://reviews.llvm.org/D110226

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h


Index: llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -368,7 +368,6 @@
   SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N);
   SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo);
   SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N);
-  SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntOp_INSERT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N);
   SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N);
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -1577,7 +1577,6 @@
   case ISD::UINT_TO_FP:   Res = PromoteIntOp_UINT_TO_FP(N); break;
   case ISD::STRICT_UINT_TO_FP:  Res = PromoteIntOp_STRICT_UINT_TO_FP(N); break;
   case ISD::ZERO_EXTEND:  Res = PromoteIntOp_ZERO_EXTEND(N); break;
-  case ISD::EXTRACT_SUBVECTOR: Res = PromoteIntOp_EXTRACT_SUBVECTOR(N); break;
   case ISD::INSERT_SUBVECTOR: Res = PromoteIntOp_INSERT_SUBVECTOR(N); break;
 
   case ISD::SHL:
@@ -5094,16 +5093,6 @@
   return DAG.getAnyExtOrTrunc(Ext, dl, N->getValueType(0));
 }
 
-SDValue DAGTypeLegalizer::PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N) {
-  SDLoc dl(N);
-  SDValue V0 = GetPromotedInteger(N->getOperand(0));
-  MVT InVT = V0.getValueType().getSimpleVT();
-  MVT OutVT = MVT::getVectorVT(InVT.getVectorElementType(),
-                               N->getValueType(0).getVectorNumElements());
-  SDValue Ext = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, OutVT, V0, 
N->getOperand(1));
-  return DAG.getNode(ISD::TRUNCATE, dl, N->getValueType(0), Ext);
-}
-
 SDValue DAGTypeLegalizer::PromoteIntOp_CONCAT_VECTORS(SDNode *N) {
   SDLoc dl(N);
 



Index: llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -368,7 +368,6 @@
   SDValue PromoteIntOp_BUILD_VECTOR(SDNode *N);
   SDValue PromoteIntOp_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo);
   SDValue PromoteIntOp_EXTRACT_VECTOR_ELT(SDNode *N);
-  SDValue PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntOp_INSERT_SUBVECTOR(SDNode *N);
   SDValue PromoteIntOp_CONCAT_VECTORS(SDNode *N);
   SDValue PromoteIntOp_SCALAR_TO_VECTOR(SDNode *N);
Index: llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -1577,7 +1577,6 @@
   case ISD::UINT_TO_FP:   Res = PromoteIntOp_UINT_TO_FP(N); break;
   case ISD::STRICT_UINT_TO_FP:  Res = PromoteIntOp_STRICT_UINT_TO_FP(N); break;
   case ISD::ZERO_EXTEND:  Res = PromoteIntOp_ZERO_EXTEND(N); break;
-  case ISD::EXTRACT_SUBVECTOR: Res = PromoteIntOp_EXTRACT_SUBVECTOR(N); break;
   case ISD::INSERT_SUBVECTOR: Res = PromoteIntOp_INSERT_SUBVECTOR(N); break;
 
   case ISD::SHL:
@@ -5094,16 +5093,6 @@
   return DAG.getAnyExtOrTrunc(Ext, dl, N->getValueType(0));
 }
 
-SDValue DAGTypeLegalizer::PromoteIntOp_EXTRACT_SUBVECTOR(SDNode *N) {
-  SDLoc dl(N);
-  SDValue V0 = GetPromotedInteger(N->getOperand(0));
-  MVT InVT = V0.getValueType().getSimpleVT();
-  MVT OutVT = MVT::getVectorVT(InVT.getVectorElementType(),
-                               N->getValueType(0).getVectorNumElements());
-  SDValue Ext = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, OutVT, V0, N->getOperand(1));
-  return DAG.getNode(ISD::TRUNCATE, dl, N->getValueType(0), Ext);
-}
-
 SDValue DAGTypeLegalizer::PromoteIntOp_CONCAT_VECTORS(SDNode *N) {
   SDLoc dl(N);
 

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