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Author SHA1 Message Date
Bruno Cardoso Lopes
6fbe7b9ddd Use MOVLHPS and MOVHLPS x86 nodes whenever possible. Also remove some useless nodes 
llvm-svn: 112642
 2010-08-31 21:15:21 +00:00
Dan Gohman
6822b9d177 Revert r112432. It appears to be exposing a problem in the emacs build. 
llvm-svn: 112638
 2010-08-31 20:58:44 +00:00
Owen Anderson
c9c199c531 Merge 2010-08-31-InfiniteRecursion.ll into crash.ll. 
llvm-svn: 112635
 2010-08-31 20:27:17 +00:00
Owen Anderson
233463074b More cleanups of my JumpThreading transforms, including extracting some duplicated code into a helper function. 
llvm-svn: 112634
 2010-08-31 20:26:04 +00:00
Jakob Stoklund Olesen
d76e5132e7 Ignore unallocatable registers in RegAllocFast. 
llvm-svn: 112632
 2010-08-31 19:54:25 +00:00
Devang Patel
b94251aea0 Revert r112623. It is causing self host build failures. 
llvm-svn: 112631
 2010-08-31 19:41:03 +00:00
Duncan Sands
ca7a58c6a3 Update the Ada instructions to LLVM 2.7 (from LLVM 2.5). 
llvm-svn: 112630
 2010-08-31 19:40:21 +00:00
Owen Anderson
66b51ff843 Add an RAII helper to make cleanup of the RecursionSet more fool-proof. 
llvm-svn: 112628
 2010-08-31 19:24:27 +00:00
Owen Anderson
5e2c04e417 Only try to clean up the current block if we changed that block already. 
llvm-svn: 112625
 2010-08-31 18:55:52 +00:00
Jim Grosbach
9cc0a6397a SP relative offsets need to be adjusted by the local allocation size when 
determining if they're likely to be in range of the SP when resolving
frame references.

llvm-svn: 112624
 2010-08-31 18:52:31 +00:00
Devang Patel
414cbc940a Remember byval argument's frame index during argument lowering and use this info to emit debug info. 
Fixes Radar 8367011.

llvm-svn: 112623
 2010-08-31 18:50:09 +00:00
Jim Grosbach
d0ebe535e9 this assert should just be a condition, since this function is just asking if 
the offset is legally encodable, not actually trying to do the encoding.

llvm-svn: 112622
 2010-08-31 18:49:31 +00:00
Owen Anderson
3ab91d56b4 Add a test for the duplicated-conditional situation illutrated by PR5652. 
llvm-svn: 112621
 2010-08-31 18:49:12 +00:00
Owen Anderson
e2b5bd3a7f Refactor my fix for PR5652 to terminate the predecessor lookups after the first failure. 
llvm-svn: 112620
 2010-08-31 18:48:48 +00:00
Chris Lattner
98902c15fa merge two tests. 
llvm-svn: 112617
 2010-08-31 18:44:03 +00:00
Owen Anderson
43ac4da8d1 Manually reduce this testcase. 
llvm-svn: 112615
 2010-08-31 18:16:29 +00:00
Chris Lattner
8535204036 merge two tests and convert to filecheck. 
llvm-svn: 112613
 2010-08-31 18:05:08 +00:00
Owen Anderson
e4af4b10f1 Add a micro-test for the transforms I added to JumpThreading. 
I have not been able to find a way to test each in isolation, for a few reasons:
1) The ability to look-through non-i1 BinaryOperator's requires the ability to look through non-constant
   ICmps in order for it to ever trigger.
2) The ability to do LVI-powered PHI value determination only matters in cases that ProcessBranchOnPHI
   can't handle.  Since it already handles all the cases without other instructions in the def-use chain
   between the PHI and the branch, it requires the ability to look through ICmps and/or BinaryOperators
   as well.

llvm-svn: 112611
 2010-08-31 17:59:07 +00:00
Jim Grosbach
0a357d79c7 Update test for 112609 
llvm-svn: 112610
 2010-08-31 17:58:47 +00:00
Jim Grosbach
ddc265a982 Improve virtual frame base register allocation heuristics. 
1. Allocate them in the entry block of the function to enable function-wide
     re-use. The instructions to create them should be re-materializable, so
     there shouldn't be additional cost compared to creating them local
     to the basic blocks where they are used.
  2. Collect all of the frame index references for the function and sort them
     by the local offset referenced. Iterate over the sorted list to
     allocate the virtual base registers. This enables creation of base
     registers optimized for positive-offset access of frame references.
     (Note: This may be appropriate to later be a target hook to do the
     sorting in a target appropriate manner. For now it's done here for
     simplicity.)

llvm-svn: 112609
 2010-08-31 17:58:19 +00:00
Dan Gohman
47865eb626 Speculatively revert r112433. 
llvm-svn: 112608
 2010-08-31 17:56:47 +00:00
Benjamin Kramer
3f8b8c1f5b Allow creation of SHT_NULL sections, from Roman Divacky. 
llvm-svn: 112605
 2010-08-31 17:03:33 +00:00
Duncan Sands
2a1c11e104 Stop using the dom frontier in DwarfEHPrepare by not promoting alloca's 
any more.  I plan to reimplement alloca promotion using SSAUpdater later.
It looks like Bill's URoR logic really always needs domtree, so the pass
now always asks for domtree info.

llvm-svn: 112597
 2010-08-31 09:05:06 +00:00
Nick Lewycky
66fe124a92 Fix an infinite loop; merging two functions will create a new function (if the 
two are weak, we make them thunks to a new strong function) so don't iterate
through the function list as we're modifying it.

Also add back the outermost loop which got removed during the cleanups.

llvm-svn: 112595
 2010-08-31 08:29:37 +00:00
Owen Anderson
bf12defee5 Don't perform an extra traversal of the function just to do cleanup. We can safely simplify instructions after each block has been processed without worrying about iterator invalidation. 
llvm-svn: 112594
 2010-08-31 07:55:56 +00:00
Bill Wendling
0409e77e99 - Cleanup some whitespaces. 
- Convert {0,1} and friends into 0b01, which is identical and more consistent.

llvm-svn: 112593
 2010-08-31 07:50:46 +00:00
Owen Anderson
e930c65b2c Rename test directory to reflect new pass name. 
llvm-svn: 112592
 2010-08-31 07:50:31 +00:00
Owen Anderson
ccaee65189 Rename ValuePropagation to a more descriptive CorrelatedValuePropagation. 
llvm-svn: 112591
 2010-08-31 07:48:34 +00:00
Owen Anderson
6853ce863c Rename file to something more descriptive. 
llvm-svn: 112590
 2010-08-31 07:41:39 +00:00
Owen Anderson
ba28fe3dcb More Chris-inspired JumpThreading fixes: use ConstantExpr to correctly constant-fold undef, and be more careful with its return value. 
This actually exposed an infinite recursion bug in ComputeValueKnownInPredecessors which theoretically already existed (in JumpThreading's
handling of and/or of i1's), but never manifested before.  This patch adds a tracking set to prevent this case.

llvm-svn: 112589
 2010-08-31 07:36:34 +00:00
Michael J. Spencer
ab565264fa Cleanup Whitespace. 
llvm-svn: 112587
 2010-08-31 06:36:46 +00:00
Michael J. Spencer
3bca7bf84d System: Fix getMagicNumber on windows. 
getMagicNumber was treating the _binary_ data it read in as a
null terminated string. This resulted in the std::string
calculating the length, and causing an assert in other code that
assumed that the length it passed was the same as the length of
the string it would get back.

llvm-svn: 112586
 2010-08-31 06:36:33 +00:00
Michael J. Spencer
b475feaea4 Fix spelling/typo. 
llvm-svn: 112585
 2010-08-31 06:36:22 +00:00
Devang Patel
a1ff33906b Offset is not always unsigned number. 
llvm-svn: 112584
 2010-08-31 06:12:08 +00:00
Devang Patel
2eeab37306 Simplify. 
llvm-svn: 112583
 2010-08-31 06:11:28 +00:00
Nick Lewycky
75dfadbaf9 Switch to DenseSet, simplifying much more code. We now have a single iteration 
where we hash, compare and fold, instead of one iteration where we build up
the hash buckets and a second one to fold.

llvm-svn: 112582
 2010-08-31 05:53:05 +00:00
Owen Anderson
bd9edea8a3 Remove r111665, which implemented store-narrowing in InstCombine. Chris discovered a miscompilation in it, and it's not easily 
fixable at the optimizer level. I'll investigate reimplementing it in DAGCombine.

llvm-svn: 112575
 2010-08-31 04:41:06 +00:00
Bruno Cardoso Lopes
ebe80d78ff zap unused method. x86 is the only user and already has a more powerfull version 
llvm-svn: 112571
 2010-08-31 02:36:20 +00:00
Bruno Cardoso Lopes
08d5d62dcb Use X86ISD::MOVSS and MOVSD to represent the movl mask pattern, also fix the handling of those nodes when seeking for scalars inside vector shuffles 
llvm-svn: 112570
 2010-08-31 02:26:40 +00:00
Eric Christopher
b2756a8b99 Rewrite slightly so we can expand for floating point types easier. 
llvm-svn: 112568
 2010-08-31 01:28:42 +00:00
Jakob Stoklund Olesen
6fa8a6ac6b Add experimental -disable-physical-join command line option. 
Eventually, we want to disable physreg coalescing completely, and let the
register allocator do its job using hints.

This option makes it possible to measure the impact of disabling physreg
coalescing.

llvm-svn: 112567
 2010-08-31 01:27:49 +00:00
Owen Anderson
f1cec75012 Fix a typo. 
llvm-svn: 112560
 2010-08-30 23:59:30 +00:00
Eric Christopher
21b355b522 If we have an unhandled type then assert, we shouldn't get here for 
things we can't handle.

llvm-svn: 112559
 2010-08-30 23:48:26 +00:00
Dan Gohman
d261381db5 Update the descriptions of NoModRef and ModRef to be consistent 
with the descriptions of Mod and Ref.

llvm-svn: 112557
 2010-08-30 23:47:24 +00:00
Anton Korobeynikov
c3f039784a Fix borken test 
llvm-svn: 112555
 2010-08-30 23:41:49 +00:00
Owen Anderson
18110f0db4 Combine these two tests, and make sure there's a newline at the end of the file. 
llvm-svn: 112554
 2010-08-30 23:37:41 +00:00
Owen Anderson
c90a98e0a5 Cleanups suggested by Chris. 
llvm-svn: 112553
 2010-08-30 23:34:17 +00:00
Owen Anderson
af33f22b40 Re-apply r112539, being more careful to respect the return values of the constant folding methods. Additionally, 
use the ConstantExpr::get*() methods to simplify some constant folding.

llvm-svn: 112550
 2010-08-30 23:22:36 +00:00
Anton Korobeynikov
851437063a Expand MOVi32imm in ARM mode after regalloc. This provides 
scheduling opportunities (extra instruction can go in between
MOVT / MOVW pair removing the stall).

llvm-svn: 112546
 2010-08-30 22:50:36 +00:00
Owen Anderson
8e72b2f3f5 Add statistics to evaluate this pass. 
llvm-svn: 112545
 2010-08-30 22:45:55 +00:00