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(parent: b4f82b4) | patch
teach instcombine to optimize idioms like A[i]&42 == 0. This
authorChris Lattner <sabre@nondot.org>
Sat, 2 Jan 2010 22:08:28 +0000 (22:08 +0000)
committerChris Lattner <sabre@nondot.org>
Sat, 2 Jan 2010 22:08:28 +0000 (22:08 +0000)
commitdf3d63b896a5435c2d8c06e147e19b2a358d381d
treec57df63a5e1436779525234e211522ecee36e08dtree | snapshot
parentb4f82b4b4f5b9bb67f10375aa633302fddce82cecommit | diff
teach instcombine to optimize idioms like A[i]&42 == 0.  This
occurs in 403.gcc in mode_mask_array, in safe-ctype.c (which
is copied in multiple apps) in _sch_istable, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92427 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/InstructionCombining.cpp diff | blob | history
test/Transforms/InstCombine/load-cmp.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors