llvm-mirror

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History

Chris Lattner ebe5932016 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
}

llvm-svn: 92373

2009-12-31 20:34:32 +00:00

Hello

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

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

Instrumentation

Cheap, mostly strict, stable sorting.

2009-12-02 15:57:15 +00:00

IPO

Final step in the metadata API restructuring: move the

2009-12-29 09:01:33 +00:00

Scalar

reuse negates where possible instead of always creating them from scratch.