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Chuang-Yu Cheng 68f7f1cf00 Teaching SimplifyCFG to recognize the Or-Mask trick that InstCombine uses to

reduce the number of comparisons.

Specifically, InstCombine can turn:
  (i == 5334 || i == 5335)
into:
  ((i | 1) == 5335)

SimplifyCFG was already able to detect the pattern:
  (i == 5334 || i == 5335)
to:
  ((i & -2) == 5334)

This patch supersedes D21315 and resolves PR27555
(https://llvm.org/bugs/show_bug.cgi?id=27555).

Thanks to David and Chandler for the suggestions!

Author: Thomas Jablin (tjablin)
Reviewers: majnemer chandlerc halfdan cycheng

http://reviews.llvm.org/D21397

llvm-svn: 273639

2016-06-24 01:59:00 +00:00

clang

Parser::ParseCXXCondition(): Prune \param in r273548 [-Wdocumentation]

2016-06-23 22:47:59 +00:00

clang-tools-extra

Fix build of ClangRenameTests

2016-06-21 20:30:40 +00:00

compiler-rt

[asan] Add failure logging to global-registration.c test case

2016-06-23 23:26:25 +00:00

debuginfo-tests

New round of fixes for "Always compile debuginfo-tests for the host triple"