[PATCH] D144700: [RISCV] Use ComplexPattern to reduce the number of patterns for XVentanaCondOps.
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 23 22:55:08 PST 2023
craig.topper created this revision.
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XVentanaCondOps check the condition operand for zero or non-zero.
We use this to optimize seteq/setne that would otherwise becomes
xor/xori/addi+snez/seqz. These patterns avoid the snez/seqz.
This patch adds two ComplexPatterns to match the varous cases and
emit the xor/xori/addi instruction.
These patterns can also be used by D144681 <https://reviews.llvm.org/D144681>.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D144700
Files:
llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
llvm/lib/Target/RISCV/RISCVInstrInfoXVentana.td
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