f02a376fbc
Update DBG_VALUEs while breaking anti dependencies.
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llvm-svn: 132487
2011-06-02 21:26:52 +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
f841571404
Fix an anti-dep breaker corner case.
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<rdar://problem/8959122> illegal register operands for UMULL instruction in cfrac nightly test
I'm stil working on a unit test, but the case is:
rx = movcc rx, r3
r2 = ldr
r2, r3 = umull r2, r2
The anti-dep breaker should not convert this into an illegal instruction:
r2, r2 = umull
llvm-svn: 124932
2011-02-05 02:58:46 +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
c57c220d20
Fix a miscompile in 186.crafty for Thumb2 that was exposed by Evan's
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scheduling change in svn 115121. The CriticalAntiDepBreaker had bad
liveness information. It was calculating the KillIndices for one scheduling
region in a basic block, rescheduling that region so the KillIndices were
no longer valid, and then using those wrong KillIndices to make decisions
for the next scheduling region. I've not been able to reduce a small
testcase for this. Radar 8502534.
llvm-svn: 115400
2010-10-02 01:49:29 +00:00
f3ecfd0e53
Fix a comment typo.
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llvm-svn: 113653
2010-09-10 22:42:21 +00:00
944aece38a
Anti-dependency breaking needs to be careful not to use reserved regs
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llvm-svn: 112832
2010-09-02 17:12:55 +00:00
c2af77f510
Fix a use-after-free.
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llvm-svn: 109468
2010-07-26 23:40:24 +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
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
866b74ba8b
Remove trailing whitespace
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llvm-svn: 103807
2010-05-14 21:20:46 +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
2061c84109
Fix some more places where dbg_value affected codegen.
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llvm-svn: 97765
2010-03-05 00:02:59 +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
96b90539d6
Change errs() to dbgs().
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llvm-svn: 92490
2010-01-04 17:47:05 +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
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
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
Devang Patel