Evan Cheng
f6d76f2e52
No need for coalescer to update kills. Only copies are coalesced and those instructions will be deleted. Doh.
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llvm-svn: 47749
2008-02-29 02:50:03 +00:00
Evan Cheng
dd13a96a60
Refactor some code; check if commuteInstruction is able to commute the instruction.
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llvm-svn: 47208
2008-02-16 02:32:17 +00:00
Evan Cheng
bb357cd8a6
- Removing the infamous r2rMap_ and rep() method. Now the coalescer will update
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register defs and uses after each successful coalescing.
- Also removed a number of hacks and fixed some subtle kill information bugs.
llvm-svn: 47167
2008-02-15 18:24:29 +00:00
Evan Cheng
d4ddda68fa
Initial support for copy elimination by commuting its definition MI.
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PR1877.
A3 = op A2 B0<kill>
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B1 = A3 <- this copy
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= op A3 <- more uses
==>
B2 = op B0 A2<kill>
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B1 = B2 <- now an identify copy
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= op B2 <- more uses
This speeds up FreeBench/neural by 29%, Olden/bh by 12%, oopack_v1p8 by 53%.
llvm-svn: 47046
2008-02-13 03:01:43 +00:00
Dan Gohman
cabaec582f
Rename MRegisterInfo to TargetRegisterInfo.
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llvm-svn: 46930
2008-02-10 18:45:23 +00:00
Chris Lattner
ad9a6ccb83
Remove attribution from file headers, per discussion on llvmdev.
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llvm-svn: 45418
2007-12-29 20:36:04 +00:00
Dan Gohman
80af3e255d
Add explicit keywords, and fix a minor typo that they uncovered.
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llvm-svn: 45034
2007-12-14 15:41:34 +00:00
Evan Cheng
45c08c8337
Switch over to MachineLoopInfo.
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llvm-svn: 44838
2007-12-11 02:09:15 +00:00
Evan Cheng
bd9a038bd7
First step towards moving the coalescer to priority_queue based machinery.
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llvm-svn: 43764
2007-11-06 08:52:21 +00:00
Evan Cheng
ec35b58b0a
Move SimpleRegisterCoalescing.h to lib/CodeGen since there is now a common
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register coalescer interface: RegisterCoalescing.
llvm-svn: 43714
2007-11-05 17:41:38 +00:00
