Chris Lattner 3523993451 reuse negates where possible instead of always creating them from scratch.
This allows us to optimize test12 into:

define i32 @test12(i32 %X) {
  %factor = mul i32 %X, -3                        ; <i32> [#uses=1]
  %Z = add i32 %factor, 6                         ; <i32> [#uses=1]
  ret i32 %Z
}

instead of:

define i32 @test12(i32 %X) {
  %Y = sub i32 6, %X                              ; <i32> [#uses=1]
  %C = sub i32 %Y, %X                             ; <i32> [#uses=1]
  %Z = sub i32 %C, %X                             ; <i32> [#uses=1]
  ret i32 %Z
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92373 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31 20:34:32 +00:00
2009-12-19 21:27:30 +00:00
2009-12-23 12:49:51 +00:00
2009-12-31 03:02:42 +00:00
2009-12-31 16:27:13 +00:00
2009-12-26 22:58:39 +00:00
2009-07-24 00:30:09 +00:00
2009-08-20 15:20:15 +00:00
2009-10-05 22:29:11 +00:00

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

Description
Mirror of official llvm git repository located at http://llvm.org/git/llvm. Updated every five minutes.
Readme 473 MiB
Languages
LLVM 46.9%
C++ 42.5%
Assembly 8.9%
C 0.6%
Python 0.4%
Other 0.5%