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(parent: 17ae213) | patch
[InstSimplify] Add self-fdiv identities for -ffinite-math-only.
authorBenjamin Kramer <benny.kra@googlemail.com>
Sun, 14 Jun 2015 18:53:58 +0000 (18:53 +0000)
committerBenjamin Kramer <benny.kra@googlemail.com>
Sun, 14 Jun 2015 18:53:58 +0000 (18:53 +0000)
commitf3e82660de47b2fb249da66ad2a82e89a4d41d02
treed7f14e89ffe2cd066223dc025643eea6dd921f34tree | snapshot
parent17ae2138b08c06a23398cbc58dda59dd2cc93acccommit | diff
[InstSimplify] Add self-fdiv identities for -ffinite-math-only.

When NaNs and Infs are ignored we can fold
 X /  X -> 1.0
-X /  X -> -1.0
 X / -X -> -1.0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239701 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/InstructionSimplify.cpp diff | blob | history
test/Transforms/InstSimplify/fast-math.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors