Chris Lattner 3bf6815556 enhance x-(-A) -> x+A to preserve NUW/NSW. ...

Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91812 91177308-0d34-0410-b5e6-96231b3b80d8

2009-12-21 04:04:05 +00:00

..

Analysis

fix an overly conservative caching issue that caused memdep to

2009-12-19 21:29:22 +00:00

Archive

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AsmParser

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Bitcode

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CodeGen

Fix a bunch of little errors that Clang complains about when its being pedantic

2009-12-19 07:05:23 +00:00

CompilerDriver

Make Path use StringRef instead of std::string where possible.

2009-12-17 21:02:39 +00:00

ExecutionEngine

Don't codegen available_externally functions. Fixes http://llvm.org/PR5735.

2009-12-17 21:35:29 +00:00

Linker

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MC

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Support

Make some methods const. The only interesting change here is that

2009-12-19 01:38:42 +00:00

System

Fix Win32 Path.inc for API update.

2009-12-18 19:59:48 +00:00

Target

Remove unused variable (noticed by clang++).

2009-12-19 18:58:49 +00:00

Transforms

enhance x-(-A) -> x+A to preserve NUW/NSW.

2009-12-21 04:04:05 +00:00

VMCore

Qualify a bunch of explicit template instantiations to satisfy clang++.

2009-12-19 00:55:12 +00:00

Makefile

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