Fixes a problem in instruction selection with testing whether or not the
transformation:
(X op C1) ^ C2 --> (X op C1) & ~C2 iff (C1&C2) == C2
should be done.
This change has been tested:
Using a debug+asserts build:
on the specific test case that brought this bug to light
make check-all
lnt nt
using this clang to build a release version of clang
Using the release+asserts clang-with-clang build:
on the specific test case that brought this bug to light
make check-all
lnt nt
Checking in because Evan wants it checked in. Test case forthcoming after
scrubbing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154955
91177308-0d34-0410-b5e6-
96231b3b80d8