Commit Graph

4 Commits

Author SHA1 Message Date
Sanjay Patel 21579bb39a [InstSimplify] regenerate checks
llvm-svn: 273419
2016-06-22 14:00:16 +00:00
Hans Wennborg 4a61370b8f Fix CHECK directives that weren't checking.
llvm-svn: 246485
2015-08-31 21:10:35 +00:00
David Majnemer bf7550e7ec InstSimplify: Exact shifts of X by Y are X if X has the lsb set
Exact shifts may not shift out any non-zero bits. Use computeKnownBits
to determine when this occurs and just return the left hand side.

This fixes PR21477.

llvm-svn: 221325
2014-11-05 00:59:59 +00:00
David Majnemer d205602a0b InstCombine: Simplify FoldICmpCstShrCst
This function was complicated by the fact that it tried to perform
canonicalizations that were already preformed by InstSimplify.  Remove
this extra code and move the tests over to InstSimplify.  Add asserts to
make sure our preconditions hold before we make any assumptions.

llvm-svn: 220314
2014-10-21 19:51:55 +00:00