[llvm] 21a7d08 - [X86] Move code that replaces ISD::VSELECT with X86ISD::BLENDV from X86DAGToDAGISel::Select to PreprocessISelDAG
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Sat Apr 11 15:01:15 PDT 2020
Author: Craig Topper
Date: 2020-04-11T15:01:05-07:00
New Revision: 21a7d08e72dffb41f9e1ff46ebdc18be452dd71f
URL: https://github.com/llvm/llvm-project/commit/21a7d08e72dffb41f9e1ff46ebdc18be452dd71f
DIFF: https://github.com/llvm/llvm-project/commit/21a7d08e72dffb41f9e1ff46ebdc18be452dd71f.diff
LOG: [X86] Move code that replaces ISD::VSELECT with X86ISD::BLENDV from X86DAGToDAGISel::Select to PreprocessISelDAG
Added:
Modified:
llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
index d75913a4fe0e..b42c4f0e1494 100644
--- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -862,6 +862,21 @@ void X86DAGToDAGISel::PreprocessISelDAG() {
}
switch (N->getOpcode()) {
+ case ISD::VSELECT: {
+ // Replace VSELECT with non-mask conditions with with BLENDV.
+ if (N->getOperand(0).getValueType().getVectorElementType() == MVT::i1)
+ break;
+
+ assert(Subtarget->hasSSE41() && "Expected SSE4.1 support!");
+ SDValue Blendv =
+ CurDAG->getNode(X86ISD::BLENDV, SDLoc(N), N->getValueType(0),
+ N->getOperand(0), N->getOperand(1), N->getOperand(2));
+ --I;
+ CurDAG->ReplaceAllUsesWith(N, Blendv.getNode());
+ ++I;
+ CurDAG->DeleteNode(N);
+ continue;
+ }
case ISD::FP_ROUND:
case ISD::STRICT_FP_ROUND:
case ISD::FP_TO_SINT:
@@ -4531,21 +4546,6 @@ void X86DAGToDAGISel::Select(SDNode *Node) {
}
break;
- case ISD::VSELECT: {
- // Replace VSELECT with non-mask conditions with with BLENDV.
- if (Node->getOperand(0).getValueType().getVectorElementType() == MVT::i1)
- break;
-
- assert(Subtarget->hasSSE41() && "Expected SSE4.1 support!");
- SDValue Blendv = CurDAG->getNode(
- X86ISD::BLENDV, SDLoc(Node), Node->getValueType(0), Node->getOperand(0),
- Node->getOperand(1), Node->getOperand(2));
- ReplaceNode(Node, Blendv.getNode());
- SelectCode(Blendv.getNode());
- // We already called ReplaceUses.
- return;
- }
-
case ISD::SRL:
if (matchBitExtract(Node))
return;
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