[PATCH] D31525: InstSimplify: Add a hook for shufflevector

[Zvi Rackover via Phabricator via llvm-commits]

zvi created this revision.

Add a hook for simplification of shufflevector's with the following rules:

- Constant folding - NFC, as it was already being done by the default handler.
- A trivial fold when the shuffle mask is undef to show the hook is firing and affecting one of the test-cases.


Repository:
  rL LLVM

https://reviews.llvm.org/D31525

Files:
  include/llvm/Analysis/ConstantFolding.h
  include/llvm/Analysis/InstructionSimplify.h
  lib/Analysis/InstructionSimplify.cpp
  test/Transforms/InstSimplify/shufflevector.ll

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