05ff4667eb
Move RegisterClassInfo.h.
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Allow targets to access this API. It's required for RegisterPressure.
llvm-svn: 158102
2012-06-06 20:29:31 +00:00
5d1bca8016
CriticalAntiDepBreaker: Replace a SmallSet of regs with a much denser BitVector.
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llvm-svn: 152999
2012-03-17 20:22:57 +00:00
4f5f84c7e7
Teach antidependency breakers to use RegisterClassInfo.
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No functional change was intended.
llvm-svn: 133202
2011-06-16 21:56:21 +00:00
f02a376fbc
Update DBG_VALUEs while breaking anti dependencies.
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llvm-svn: 132487
2011-06-02 21:26:52 +00:00
52847a9bb9
Typo.
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llvm-svn: 125232
2011-02-09 22:55:48 +00:00
4b4918788b
Fix PostRA antidependence breaker.
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Avoid using the same register for two def operands or and earlyclobber
def and use operand. This fixes PR8986 and improves on the prior fix
for rdar://problem/8959122.
llvm-svn: 125089
2011-02-08 17:39:46 +00:00
82ae9a95a5
Fixes <rdar://problem/8612856>: During postRAsched, the antidependence
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breaker needs to check all definitions of the antidepenent register to
avoid multiple defs of the same new register.
llvm-svn: 118032
2010-11-02 18:16:45 +00:00
51a9c0a1b3
Use std::vector instead of TargetRegisterInfo::FirstVirtualRegister. This time
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make sure to allocate enough space in the std::vector.
llvm-svn: 108449
2010-07-15 19:58:14 +00:00
c48adb60ca
revert bill's patches in an attempt to fix the buildbot.
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llvm-svn: 108419
2010-07-15 06:51:46 +00:00
d5b390189d
Use std::vector instead of a hard-coded array. The length of that array could
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get *very* large, but we only need it to be the size of thenumber of pregs.
llvm-svn: 108411
2010-07-15 05:56:32 +00:00
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
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
a7cef4fab5
Anti-dependency breaking needs to be careful regarding instructions with
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multiple register definitions.
llvm-svn: 92864
2010-01-06 22:21:25 +00:00
eb431da074
80 column and whitespace cleanup
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llvm-svn: 92837
2010-01-06 16:48:02 +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
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
e30ed53c05
Make AntiDepReg.h internal.
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llvm-svn: 85412
2009-10-28 18:29:54 +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
8370485db9
Break anti-dependence breaking out into its own class.
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llvm-svn: 85127
2009-10-26 16:59:04 +00:00
Andrew Trick