Chris Lattner f299184565 Fix a bogus optimization: folding (slt (zext i1 A to i32), 1) -> (slt i1 A, true) ...

This cause a regression in InstCombine/JavaCompare, which was doing the right
thing on accident.  To handle the missed case, generalize the comparisons based
on masked bits a little bit to handle comparisons against the max value. For 
example, we can now xform (slt i32 (and X, 4), 4) -> (setne i32 (and X, 4), 4)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53443 91177308-0d34-0410-b5e6-96231b3b80d8

2008-07-11 04:09:09 +00:00

..

Hello

Clean up the use of static and anonymous namespaces. This turned up

2008-05-13 00:00:25 +00:00

Instrumentation

Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to

2008-05-23 21:05:58 +00:00

IPO

Restructure dead argument elimination, try #3 :-)

2008-07-10 10:24:08 +00:00

Scalar

Fix a bogus optimization: folding (slt (zext i1 A to i32), 1) -> (slt i1 A, true)

2008-07-11 04:09:09 +00:00

Utils

- Use O(1) check of basic block size limit.

2008-06-25 07:50:12 +00:00

Makefile

remove attribution from lib Makefiles.

2007-12-29 20:09:26 +00:00