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(parent: 958b670) | patch
ValueTracking: Make computeKnownBits for Arguments a little more clear
authorDavid Majnemer <david.majnemer@gmail.com>
Sat, 3 Jan 2015 02:33:25 +0000 (02:33 +0000)
committerDavid Majnemer <david.majnemer@gmail.com>
Sat, 3 Jan 2015 02:33:25 +0000 (02:33 +0000)
commitef8f7e1a5a5a44a32a981863b8df62059aca47ee
treeeaffd0c7ff83d2f9ddd45c47e41a3fac9284725ftree | snapshot
parent958b670c3404071548deb75df55c0b8a1a6e3e13commit | diff
ValueTracking: Make computeKnownBits for Arguments a little more clear

We would sometimes leave the out-param APInts untouched while going
through computeKnownBits.  While I don't know of a way to trigger a bug
involving this in practice, it goes against the overall design of
computeKnownBits.

Found via code inspection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225109 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/ValueTracking.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors