[PATCH] D135168: [GlobalISel] Add computeNumSignBits() support for compares.

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: paquette, arsenm.
aemerson added a project: LLVM.
Herald added subscribers: hiraditya, rovka.
Herald added a project: All.
aemerson requested review of this revision.
Herald added a subscriber: wdng.

Doing so allows G_SEXT_INREG to be combined away for many vector cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D135168

Files:
  llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp
  llvm/test/CodeGen/AArch64/GlobalISel/combine-udiv.ll
  llvm/test/CodeGen/AArch64/arm64-vabs.ll
  llvm/test/CodeGen/AArch64/min-max.ll
  llvm/test/CodeGen/AArch64/neon-compare-instructions.ll
  llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D135168.465032.patch
Type: text/x-patch
Size: 122641 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20221004/0e9da448/attachment.bin>