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(parent: 536e667) | patch
Enable Chris' value propagation change. It make available known sign, zero, one bits...
authorEvan Cheng <evan.cheng@apple.com>
Thu, 12 Mar 2009 06:29:49 +0000 (06:29 +0000)
committerEvan Cheng <evan.cheng@apple.com>
Thu, 12 Mar 2009 06:29:49 +0000 (06:29 +0000)
commit8042255118ddaf49ac940805b95f77eddecc70e5
treee691e2d5a4262c164a995773a5dbc99508343ee7tree | snapshot
parent536e66764b93fd1368ce4d1f753cbe909c05b62dcommit | diff
Enable Chris' value propagation change. It make available known sign, zero, one bits information for values that are live out of basic blocks. The goal is to eliminate unnecessary sext, zext, truncate of values that are live-in to blocks. This does not handle PHI nodes yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66777 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors