[PATCH] D112285: [PowerPC] PPC backend optimization to lower int_ppc_tdw/int_ppc_tw intrinsics to TDI/TWI machine instructions

[Victor Huang via Phabricator via cfe-commits]

NeHuang created this revision.
NeHuang added reviewers: nemanjai, stefanp, PowerPC.
NeHuang added a project: LLVM.
Herald added subscribers: shchenz, kbarton, hiraditya.
NeHuang requested review of this revision.

This patch adds the backend optimization to match XL behavior for the two builtins `__tdw` and `__tw` that when the second input argument is an immediate, emitting `tdi`/`twi` instructions instead of `td`/`tw`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D112285

Files:
  llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
  llvm/lib/Target/PowerPC/PPCInstr64Bit.td
  llvm/lib/Target/PowerPC/PPCInstrInfo.td
  llvm/test/CodeGen/PowerPC/builtins-ppc-xlcompat-trap-64bit-only.ll
  llvm/test/CodeGen/PowerPC/builtins-ppc-xlcompat-trap.ll

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