llvm-svn: 29993

the PredicateSimplifier is skipped in make check anyways.

llvm-svn: 29992

another Value) weren't being found by findProperties.

This fixes predsimplify.ll test6, a missed optimization opportunity.

llvm-svn: 29991

llvm-svn: 29990

llvm-svn: 29989

llvm-svn: 29978

Also, the assert could never fire due to || instead of &&.

llvm-svn: 29977

llvm-svn: 29972

llvm-svn: 29971

If a branch's condition has become a ConstantBool, simplify it immediately.
Removing the edge saves work and exposes up more optimization opportunities
in the pass.
Add support for SelectInst.

llvm-svn: 29970

llvm-svn: 29969

number of copies, potentially defining live ranges that appear to have
differing value numbers that become identical when coallsced.  Among other
things, this fixes CodeGen/X86/shift-coalesce.ll and PR687.

llvm-svn: 29968

llvm-svn: 29967

exit blocks. The output is dependent on addresses of basic block.

Add and use Loop::getUniqueExitBlocks.

llvm-svn: 29966

llvm-svn: 29965

llvm-svn: 29964

llvm-svn: 29963

llvm-svn: 29962

llvm-svn: 29960

llvm-svn: 29958

or vector result. X86 does not have load/mod/store variants of those
instructions.

llvm-svn: 29957

- Also disable isel load folding if -fast.

llvm-svn: 29956

update stage.

llvm-svn: 29955

handling.)

llvm-svn: 29954

llvm-svn: 29953

llvm-svn: 29952

Move isCommutativeBinOp from SelectionDAG.cpp and DAGCombiner.cpp out. Make it a static method of SelectionDAG.

llvm-svn: 29951

llvm-svn: 29950

there are clearly some encoding bugs lurking in there somewhere.

llvm-svn: 29949

llvm-svn: 29948

and simplifies expressions. This implements the optimization described
in PR807.

llvm-svn: 29947

llvm-svn: 29946

llvm-svn: 29945

Add an optional pass to preprocess the DAG before x86 isel to allow selecting more load/mod/store instructions.

llvm-svn: 29943

llvm-svn: 29941

llvm-svn: 29940

llvm-svn: 29939

llvm-svn: 29938

Fixed some inconsistencies with format. Corrected some of the text.
Put code inside of "code" div tags.

llvm-svn: 29937

gccas on 252.eon

llvm-svn: 29936