f128bdcb55
Make post-ra scheduling, anti-dep breaking, and register scavenger (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler.
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llvm-svn: 106091
2010-06-16 07:35:02 +00:00
848548300d
Not all entries in the range will have an SUnit. Check for that when looking
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for debug information.
llvm-svn: 105324
2010-06-02 15:29:36 +00:00
12ac8f0352
Update debug information when breaking anti-dependencies. rdar://7759363
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llvm-svn: 105300
2010-06-01 23:48:44 +00:00
35bc4d46cb
Make BreakAntiDependencies' SUnits argument const, and make the Begin
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and End arguments by-value rather than by-reference.
llvm-svn: 101830
2010-04-19 23:11:58 +00:00
67dd3a4464
Tidy whitespace.
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llvm-svn: 100904
2010-04-09 21:38:26 +00:00
b06015aa69
move target-independent opcodes out of TargetInstrInfo
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into TargetOpcodes.h. #include the new TargetOpcodes.h
into MachineInstr. Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the
codebase.
llvm-svn: 95687
2010-02-09 19:54:29 +00:00
eb431da074
80 column and whitespace cleanup
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llvm-svn: 92837
2010-01-06 16:48:02 +00:00
75a2efb06d
Change errs() to dbgs().
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llvm-svn: 92093
2009-12-24 00:14:25 +00:00
a45fe67667
<rdar://problem/7453528>. Track only physical registers that are valid for the target.
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llvm-svn: 90970
2009-12-09 17:18:22 +00:00
3f3a8b1c7e
<rdar://problem/6721894>. Allow multiple registers to be renamed together (super and sub) if necessary to break an anti-dependence.
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llvm-svn: 89722
2009-11-24 00:59:08 +00:00
5305dc0be1
Restructure code to allow renaming of multiple-register groups for anti-dep breaking.
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llvm-svn: 89511
2009-11-20 23:33:54 +00:00
80a03cc0b1
Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks.
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llvm-svn: 89471
2009-11-20 19:32:48 +00:00
dd1c6198d4
Fix a couple of problems with maintaining liveness information for antidep breaking.
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llvm-svn: 89404
2009-11-19 23:12:37 +00:00
b9fe5d5d02
Allow target to specify regclass for which antideps will only be broken along the critical path.
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llvm-svn: 88682
2009-11-13 19:52:48 +00:00
da83f7d58b
Rename registers to break output dependencies in addition to anti-dependencies.
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llvm-svn: 87015
2009-11-12 19:08:21 +00:00
cf89db135e
Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies.
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llvm-svn: 86628
2009-11-10 00:15:47 +00:00
bed7cb6c1d
Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates.
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llvm-svn: 86172
2009-11-05 21:06:09 +00:00
542649463b
Replace std::map.at() with std::map[].
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llvm-svn: 86102
2009-11-05 01:45:50 +00:00
7d8878add2
Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies.
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llvm-svn: 86098
2009-11-05 01:19:35 +00:00
8501dbbe10
Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed.
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llvm-svn: 85939
2009-11-03 20:57:50 +00:00
faa7660fd0
Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions.
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llvm-svn: 85537
2009-10-29 23:30:59 +00:00
9f1b2d4619
Fix a couple of bugs in aggressive anti-dep breaking.
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llvm-svn: 85522
2009-10-29 19:17:04 +00:00
e056d1077e
Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken.
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llvm-svn: 85166
2009-10-26 22:31:16 +00:00
de11f36ab7
Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all.
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llvm-svn: 85145
2009-10-26 19:32:42 +00:00
Evan Cheng