[llvm] r364429 - [X86] shouldScalarizeBinop - never scalarize target opcodes.
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 26 07:21:29 PDT 2019
Author: rksimon
Date: Wed Jun 26 07:21:29 2019
New Revision: 364429
URL: http://llvm.org/viewvc/llvm-project?rev=364429&view=rev
Log:
[X86] shouldScalarizeBinop - never scalarize target opcodes.
We have (almost) no target opcodes that have scalar/vector equivalents - for now assume we can't scalarize them (we can add exceptions if we need to).
Modified:
llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=364429&r1=364428&r2=364429&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Wed Jun 26 07:21:29 2019
@@ -4899,15 +4899,22 @@ bool X86TargetLowering::isExtractSubvect
}
bool X86TargetLowering::shouldScalarizeBinop(SDValue VecOp) const {
+ unsigned Opc = VecOp.getOpcode();
+
+ // Assume target opcodes can't be scalarized.
+ // TODO - do we have any exceptions?
+ if (Opc >= ISD::BUILTIN_OP_END)
+ return false;
+
// If the vector op is not supported, try to convert to scalar.
EVT VecVT = VecOp.getValueType();
- if (!isOperationLegalOrCustomOrPromote(VecOp.getOpcode(), VecVT))
+ if (!isOperationLegalOrCustomOrPromote(Opc, VecVT))
return true;
// If the vector op is supported, but the scalar op is not, the transform may
// not be worthwhile.
EVT ScalarVT = VecVT.getScalarType();
- return isOperationLegalOrCustomOrPromote(VecOp.getOpcode(), ScalarVT);
+ return isOperationLegalOrCustomOrPromote(Opc, ScalarVT);
}
bool X86TargetLowering::shouldFormOverflowOp(unsigned Opcode, EVT VT) const {
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