[PATCH] D29369: [ubsan] Omit superflous overflow checks for promoted arithmetic (PR20193)

[Vedant Kumar via Phabricator via cfe-commits]

vsk updated this revision to Diff 89733.
vsk added a comment.

- Make the suggested readability improvements, and fix a comment in the test case.


https://reviews.llvm.org/D29369

Files:
  lib/CodeGen/CGExprScalar.cpp
  test/CodeGen/compound-assign-overflow.c
  test/CodeGen/ubsan-promoted-arith.cpp
  test/CodeGen/unsigned-promotion.c

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