[PATCH] D27466: [SLP] Fix sign-extends for type-shrinking

[Matthew Simpson via Phabricator via llvm-commits]

mssimpso updated this revision to Diff 80786.
mssimpso marked an inline comment as done.
mssimpso added a comment.

Addressed Michael's comments.

- Reduced the existing test case. The test now uses -slp-threshold to force vectorization.
- Added another test for the sext case.
- Added FIXME's in both the source and test explaining why the sext case is currently suboptimal, but correct.


https://reviews.llvm.org/D27466

Files:
  lib/Transforms/Vectorize/SLPVectorizer.cpp
  test/Transforms/SLPVectorizer/X86/minimum-sizes.ll

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