[PATCH] D122967: [InstCombine] fold more constant divisor to select-of-constants divisor

[Chenbing.Zheng via Phabricator via llvm-commits]

Chenbing.Zheng created this revision.
Chenbing.Zheng added reviewers: spatel, lebedev.ri, RKSimon, benshi001.
Chenbing.Zheng added a project: LLVM.
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Herald added a project: All.
Chenbing.Zheng requested review of this revision.
Herald added subscribers: llvm-commits, jacquesguan.

This patch slove TODO left in div.ll.

By adding a parameter to function FoldOpIntoSelect， we can fold more Ops to Select.
For this example, we tend to fold the division instruction, so we no longer care whether SelectInst is one use.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122967

Files:
  llvm/lib/Transforms/InstCombine/InstCombineInternal.h
  llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/div.ll

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