Gabor Greif
99c07b1d95
Move the search for the appropriate AND instruction
...
into OptimizeCompareInstr.
This necessitates the passing of CmpValue around,
so widen the virtual functions to accomodate.
No functionality changes.
llvm-svn: 114428
2010-09-21 12:01:15 +00:00
Gabor Greif
bd0b1357e0
must not peephole away side effects
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llvm-svn: 113848
2010-09-14 20:46:08 +00:00
Bill Wendling
038bcd275f
Rename ConvertToSetZeroFlag to something more general.
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llvm-svn: 113670
2010-09-11 00:13:50 +00:00
Bill Wendling
f2b0c99610
No need to recompute the SrcReg and CmpValue.
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llvm-svn: 113666
2010-09-10 23:46:12 +00:00
Bill Wendling
e54ebc2cbe
Move some of the decision logic for converting an instruction into one that sets
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the 'zero' bit down into the back-end. There are other cases where this logic
isn't sufficient, so they should be handled separately.
llvm-svn: 113665
2010-09-10 23:34:19 +00:00
Bill Wendling
dc260a07f6
Modify the comparison optimizations in the peephole optimizer to update the
...
iterator when an optimization took place. This allows us to do more insane
things with the code than just remove an instruction or two.
llvm-svn: 113640
2010-09-10 21:55:43 +00:00
Bill Wendling
09a19ea0bf
Remove now unneeded command line flag that enables 'optimize compares.'
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llvm-svn: 112287
2010-08-27 20:39:09 +00:00
Bill Wendling
c8117e507d
Turn optimize compares back on with fix. We needed to test that a machine op was
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a register before checking if it was defined.
llvm-svn: 110733
2010-08-10 21:38:11 +00:00
Dan Gohman
9abea56ce4
Revert r110718; it broke clang-i386-darwin9.
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llvm-svn: 110726
2010-08-10 20:49:33 +00:00
Bill Wendling
0acc8f8a02
Turn optimize cmps on by default so that we can get some testing by the nightly
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ARM testers.
llvm-svn: 110718
2010-08-10 20:23:02 +00:00
Bill Wendling
8a7a43a1cb
Merge the OptimizeExts and OptimizeCmps passes into one PeepholeOptimizer
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pass. This pass should expand with all of the small, fine-grained optimization
passes to reduce compile time and increase happiment.
llvm-svn: 110627
2010-08-09 23:59:04 +00:00
