Chris Lattner 0b0803ae15 Split up subtracts into add+negate if they have a reassociable use or operand ...

that is also a subtract.  This implements PR2047 and Transforms/Reassociate/subtest2.ll 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47241 91177308-0d34-0410-b5e6-96231b3b80d8

2008-02-17 20:51:26 +00:00

..

Analysis

Fix typo. Thanks to Duncan for noticing.

2008-02-13 12:21:32 +00:00

Archive

Use empty() instead of comparing size() with zero.

2008-01-29 13:02:09 +00:00

AsmParser

Back out mods to llvmAsmParser, incorrectly committed

2008-01-30 03:10:00 +00:00

Bitcode

Use empty() instead of comparing size() with zero.

2008-01-29 13:02:09 +00:00

CodeGen

I cannot find a libgcc function for this builtin. Therefor expanding it to a noop (which is how it use to be treated). If someone who knows the x86 backend better than me could tell me how to get a lock prefix on an instruction, that would be nice to complete x86 support.

2008-02-16 14:46:26 +00:00

Debugger

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

ExecutionEngine

Support vector constant zeros, thanks to Zack Rusin for the testcase.

2008-02-15 00:57:28 +00:00

Linker

Remove attribution from file headers, per discussion on llvmdev.

2007-12-29 20:36:04 +00:00

Support

Fixed bug in FoldingSetIteratorImpl where we did not correctly check if

2008-02-15 21:12:46 +00:00

System

It is not safe to call fork in PrintStackTrace. Sometimes it freezes the program.

2008-02-15 18:05:54 +00:00

Target

move PR2053 to here.

2008-02-17 19:43:57 +00:00

Transforms

Split up subtracts into add+negate if they have a reassociable use or operand

2008-02-17 20:51:26 +00:00

VMCore

Some micro-optimizations.

2008-02-16 20:53:06 +00:00

Makefile

remove attribution from lib Makefiles.

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