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Author SHA1 Message Date
Chris Lattner
77ee977fcf add a debugging option to help track down j-t problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60514 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 00:07:59 +00:00
Dan Gohman
cef874ae2b Rewrite the liveness bookkeeping code to fix a bunch of 
issues with subreg operands and tied operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60510 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 23:07:27 +00:00
Dale Johannesen
1bdd93a3dc Make the debugging dump be a full line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60509 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 22:45:31 +00:00
Dale Johannesen
308f24d452 Remove an unused field. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 22:43:56 +00:00
Dan Gohman
d71703deec Have PseudoSourceValue override Value::dump, so that it works 
on PseudoSourceValue values. This also fixes a FIXME in
lib/VMCode/AsmWriter.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60507 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 21:37:21 +00:00
Dale Johannesen
544e0d0e52 Fix a misspelled function name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 20:56:12 +00:00
Chris Lattner
29874e0dc6 Factor some code into a new FoldSingleEntryPHINodes method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60501 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:44:02 +00:00
Dan Gohman
e96cc775e4 Fix an inconsistency in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60500 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:38:38 +00:00
Evan Cheng
62fb4f2e1c Use mmx (punpckldq VR64, (mmx_v_set0)) to clear high 32-bits of a VR64 register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:38:05 +00:00
Dan Gohman
e561751e98 Don't charge the full latency for anti and output dependencies. This is 
an area where eventually it would be good to use target-dependent
information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:37:34 +00:00
Dale Johannesen
f94a327361 A step towards geting linux ppc to work (see PR 3099) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60497 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:33:10 +00:00
Dan Gohman
0dba0e5408 When looking for anti-dependences on the critical path, don't bother 
examining non-anti-dependence edges.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:32:26 +00:00
Dan Gohman
ebb0a31103 Add a comment about callee-saved registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60495 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:30:13 +00:00
Dale Johannesen
67c7989294 Fix a really wrong comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60494 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:25:46 +00:00
Chris Lattner
7c99f49368 fix a really incorrect comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60492 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 19:18:54 +00:00
Dan Gohman
c54baa2d43 Split foldMemoryOperand into public non-virtual and protected virtual 
parts, and add target-independent code to add/preserve
MachineMemOperands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60488 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:43:12 +00:00
Dan Gohman
15511cf166 Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60487 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:15:48 +00:00
Dan Gohman
8cf7713753 Extend X86's addFrameReference to add a MachineMemOperand for 
the frame reference. This will help post-RA scheduling determine
that spills to distinct stack slots are independent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 18:11:40 +00:00
Rafael Espindola
3eda88ed9f Fix some tests. The grep for "il" was matching "file". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60485 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 17:14:56 +00:00
Dan Gohman
f033b5a393 Update a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 17:10:41 +00:00
Duncan Sands
8b8e5a7f96 Only check that the result of the mapping was not 
a new node if the node was actually remapped.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60482 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 12:36:16 +00:00
Rafael Espindola
952b839ce9 Fix bug 3140. 
Print a single parameter .file directive if we have an ELF target.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60480 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 11:01:37 +00:00
Richard Osborne
269bc0042f Add support for ISD::TRAP to the XCore backend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60479 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 10:59:16 +00:00
Evan Cheng
370e5340a5 Refactor code. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60478 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 08:38:43 +00:00
Bill Wendling
0ea25cb941 CC should only be a ConstantSDNode at this point. Just use 'cast' instead of 'dyn_cast'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 08:32:02 +00:00
Evan Cheng
c19065150b Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60476 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 08:20:45 +00:00
Chris Lattner
2a5dc33c57 testcase for br undef folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60471 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 07:48:27 +00:00
Chris Lattner
421fa9e32e Teach jump threading some more simple tricks: 
1) have it fold "br undef", which does occur with
   surprising frequency as jump threading iterates.
2) teach j-t to delete dead blocks.  This removes the successor
   edges, reducing the in-edges of other blocks, allowing 
   recursive simplification.
3) Fold things like:
     br COND, BBX, BBY
  BBX:
     br COND, BBZ, BBW

   which also happens because jump threading iterates.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60470 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 07:48:08 +00:00
Chris Lattner
2973a25dbc third time is the charm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60469 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 07:45:15 +00:00
Chris Lattner
15efa1a1fd fix assertion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60468 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 07:43:05 +00:00
Chris Lattner
1ea7771e09 don't spew tons of stuff to the output. This testcase is *not* for 
loop deletion (it is for a ton of passes), which is very bad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60465 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 06:41:50 +00:00
Chris Lattner
71af9b07a5 Rename DeleteBlockIfDead to DeleteDeadBlock and make it 
unconditionally delete the block.  All likely clients will
do the checking anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60464 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 06:40:52 +00:00
Chris Lattner
2b1ba24fb7 Factor some code out of SimplifyCFG, forming a new 
DeleteBlockIfDead method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 06:37:44 +00:00
Dan Gohman
62c939d7d5 Mark x86's V_SET0 and V_SETALLONES with isSimpleLoad, and teach X86's 
foldMemoryOperand how to "fold" them, by converting them into constant-pool
loads. When they aren't folded, they use xorps/cmpeqd, but for example when
register pressure is high, they may now be folded as memory operands, which
reduces register pressure.

Also, mark V_SET0 isAsCheapAsAMove so that two-address-elimination will
remat it instead of copying zeros around (V_SETALLONES was already marked).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 05:21:24 +00:00
Bill Wendling
b3cf03cee1 Change label to 'carry' for unsigned adds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60460 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 02:43:12 +00:00
Dan Gohman
41474baac8 Add a sanity-check to tablegen to catch the case where isSimpleLoad 
is set but mayLoad is not set. Fix all the problems this turned up.

Change code to not use isSimpleLoad instead of mayLoad unless it
really wants isSimpleLoad.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60459 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 02:30:17 +00:00
Dan Gohman
c70f329543 Fix a missing #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60458 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 02:10:00 +00:00
Dan Gohman
03e7d834d5 Add an explicit keyword. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60457 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:55:47 +00:00
Dan Gohman
92faff2e4c Replace a #include with a forward-declaration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60456 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:53:18 +00:00
Dan Gohman
c5a1a220ea Fix this comment to reflect that it applies to types other 
than just i32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60455 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:39:44 +00:00
Dan Gohman
e4300e271a Fix byval arguments in the fastcc calling convention. The fastcc convention 
delegates to the regular x86-32 convention which handles byval, but only
after it handles a few cases, and it's necessary to handle byval before
handling those cases. This fixes PR3122 (and rdar://6400815), llvm-gcc
miscompiling LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:28:04 +00:00
Dan Gohman
7f9b35200b Add nounwind attributes to this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 01:10:18 +00:00
Dale Johannesen
3cc1b8d9c6 testcases for recent dag combiner changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60449 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-03 00:52:41 +00:00
Chris Lattner
1d93b2e1b6 Fix isIntN to work with APInts > 64 bits. This method is only 
used by clang apparently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60446 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 23:33:29 +00:00
Evan Cheng
96da041949 Remove a (what appears to be) overly strict assertion. Here is what happened: 
1. ppcf128 select is expanded to f64 select's.
2. f64 select operand 0 is an i1 truncate, it's promoted to i32 zero_extend.
3. f64 select is updated. It's changed back to a "NewNode" and being re-analyzed.
4. f64 select operands are being processed. Operand 0 is a "NewNode". It's being expunged out of ReplacedValues map.
5. ExpungeNode tries to remap f64 select and notice it's a "NewNode" and assert.
Duncan, please take a look. Thanks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60443 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 21:57:09 +00:00
Dale Johannesen
fb10cd4901 Minor rewrite per review feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60442 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 21:17:11 +00:00
Scott Michel
546d7b5c4a Non-functional change: make custom lowering for truncate stylistically 
consistent with the way it's generally done in other places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60439 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 19:55:08 +00:00
Scott Michel
b30e8f6334 CellSPU: 
- Incorporate Tilmann Scheller's ISD::TRUNCATE custom lowering patch
- Update SPU calling convention info, even if it's not used yet (but can be
  at some point or another)
- Ensure that any-extended f32 loads are custom lowered, especially when
  they're promoted for use in printf.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60438 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 19:53:53 +00:00
Dan Gohman
d118342b25 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60434 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 19:27:20 +00:00
Owen Anderson
7b9d67c5bf Add support for folding spills into preceding defs when doing pre-alloc splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 18:53:47 +00:00