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209 Commits

Author SHA1 Message Date
Bill Wendling
20a11adc5e Need to grow the indexed map. Added debug statements. 
llvm-svn: 44892
 2007-12-11 23:27:51 +00:00
Bill Wendling
c92c27f928 Simplify slightly. 
llvm-svn: 44881
 2007-12-11 22:22:22 +00:00
Bill Wendling
9f0bcd67cf Blark! How in the world did this work without this?! 
llvm-svn: 44874
 2007-12-11 19:40:06 +00:00
Bill Wendling
30281897da - Update the virtual reg to machine instruction map when hoisting. 
- Fix subtle bug when creating initially creating this map.

llvm-svn: 44873
 2007-12-11 19:17:04 +00:00
Bill Wendling
9f02f24469 Checking for "zero operands" during the "CanHoistInst()" method isn't necessary 
because those with side effects will be caught by other checks in here.

Also, simplify the check for a BB in a sub loop.

llvm-svn: 44871
 2007-12-11 18:45:11 +00:00
Bill Wendling
8d8d9a2f5e Reverting 44702. It wasn't correct to rename them. 
llvm-svn: 44727
 2007-12-08 23:58:46 +00:00
Bill Wendling
d10837def7 Renaming: 
isTriviallyReMaterializable -> hasNoSideEffects
  isReallyTriviallyReMaterializable -> isTriviallyReMaterializable

llvm-svn: 44702
 2007-12-08 07:17:56 +00:00
Bill Wendling
3c6bac9686 Incorporated comments from Evan and Chris: 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056043.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056048.html

llvm-svn: 44696
 2007-12-08 01:47:01 +00:00
Bill Wendling
c08dedb060 Initial commit of the machine code LICM pass. It successfully hoists this: 
_foo:
        li r2, 0
LBB1_1: ; bb
        li r5, 0
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr 

to:

_foo:
        li r2, 0
        li r5, 0
LBB1_1: ; bb
        stw r5, 0(r3)
        addi r2, r2, 1
        addi r3, r3, 4
        cmplw cr0, r2, r4
        bne cr0, LBB1_1 ; bb
LBB1_2: ; return
        blr

ZOMG!! :-)

Moar to come...

llvm-svn: 44687
 2007-12-07 21:42:31 +00:00