Chris Lattner 4de2c76542 Fix m_Not and m_Neg to not match random ConstantInt's. Before ...

these would try hard to match constants by inverting the bits
and recursively matching.  There are two problems with this:
1) some patterns would match when we didn't want them to (theoretical)
2) this is insanely expensive to do, and most often pointless.

This was apparently useful in just 2 instcombine cases, which I
added code to handle explicitly.  This change speeds up 'opt'
time on 176.gcc by 1% and produces bitwise identical code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123518 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-15 05:52:27 +00:00

..

llvm

Fix m_Not and m_Neg to not match random ConstantInt's. Before

2011-01-15 05:52:27 +00:00

llvm-c

Do not include DataTypes.h in llvm-c/lto.h.

2011-01-07 22:26:25 +00:00