[PATCH] D25914: Redo store splitting in CodeGenPrepare

[Wei Mi via Phabricator via llvm-commits]

wmi updated this revision to Diff 79471.
wmi added a comment.

Address Chandler and David's comments.

- Add an option to force store splitting.
- Add int pair related tests
- early exit if getTypeStoreSizeInBits and getTypeSizeInBits return different values for store type before and after split


Repository:
  rL LLVM

https://reviews.llvm.org/D25914

Files:
  lib/CodeGen/CodeGenPrepare.cpp
  test/CodeGen/X86/split-store.ll

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