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6204 Commits

Author SHA1 Message Date
Dan Gohman
e3a49cd944 Whitespace cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60769 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 16:37:48 +00:00
Mon P Wang
1cd46bbb1c In LegalizeOp, don't change the result type of CONVERT_RNDSAT when promoting 
one of its operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60749 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 07:27:39 +00:00
Mon P Wang
e9f1015d1f Fix getNode to allow a vector for the shift amount for shifts of vectors. 
Fix the shift amount when unrolling a vector shift into scalar shifts.
Fix problem in getShuffleScalarElt where it assumes that the input of
a bit convert must be a vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60740 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 05:46:39 +00:00
Dan Gohman
aeac8f9cb4 Don't charge full latency for an anti-dependence, in this simplistic 
pipeline model.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60733 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-09 00:26:46 +00:00
Dan Gohman
a629b48a66 Fix the top-level comments, and fix some 80-column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60707 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 17:50:35 +00:00
Dan Gohman
c8a1a3c426 Factor out the code for sign-extending/truncating gep indices 
and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 07:57:47 +00:00
Dan Gohman
2e3e5bf427 Move createVirtualRegister out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60684 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 04:54:11 +00:00
Dan Gohman
c93ced5b34 Clarify some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60683 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-08 04:53:23 +00:00
Owen Anderson
75c99c5aa8 Switch to top-down mode and fix a crasher this exposed caused by an error in the 
live interval updating.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60652 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-07 05:33:18 +00:00
Evan Cheng
650d7f3ff4 Reason #3 from 60595 doesn't hold true. If we can fold a PIC load from constpool into a use, the rewrite happens at time of spill (not in VirtRegMap). Later on, if the GlobalBaseReg is spilled, the spiller can see the use uses GlobalBaseReg and do the right thing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60596 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 17:41:31 +00:00
Evan Cheng
72eeb94fe1 Fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60592 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 17:00:16 +00:00
Dan Gohman
2ce7f2068f Drop the reg argument to isRegReDefinedByTwoAddr, which was redundant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60586 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 05:45:42 +00:00
Dan Gohman
9bf23b5452 Teach StackSlotColoring to update MachineMemOperands when 
changing the stack slots on an instruction, to keep them
consistent with the actual memory addresses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60584 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 05:31:14 +00:00
Dan Gohman
490b1833a9 Ignore IMPLICIT_DEF instructions when computing physreg liveness. 
While they appear to provide a normal clobbering def, they don't
in the case of the awkward IMPLICIT_DEF+INSERT_SUBREG idiom. It
would be good to change INSERT_SUBREG; until then, this change
allows post-regalloc scheduling to cope in a mildly conservative
way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60583 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-05 05:30:02 +00:00
Owen Anderson
6002e993e0 Factor out some common code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60553 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 21:20:30 +00:00
Duncan Sands
9304f2c294 When allocating a stack temporary, use the correct 
number of bytes for types such as i1 which are not
a multiple of 8 bits in length.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60543 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 18:08:40 +00:00
Dan Gohman
80e201b8db Use register names instead of numbers in debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 02:15:26 +00:00
Dan Gohman
b29ffc8870 Make debug output more informative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60524 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 02:14:57 +00:00
Dan Gohman
6a9041e5ca Add minimal support for disambiguating memory references. Currently 
the main thing this covers is spills to distinct spill slots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-04 01:35:46 +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
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
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
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
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
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
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
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
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
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
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
Dale Johannesen
34d7985927 One more transformation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60432 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 18:40:40 +00:00
Tilmann Scheller
b0a5cdd451 make it possible to custom lower TRUNCATE (needed for the CellSPU target) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60409 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 12:12:25 +00:00
Mon P Wang
fb13f008cb Removed some unnecessary code in widening. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60406 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 07:35:08 +00:00
Evan Cheng
bbe4105cd7 Fix PR3124: overly strict assert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60392 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 02:15:36 +00:00
Dale Johannesen
221cd2f081 Add a few more transformations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60391 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-02 01:30:54 +00:00
Bill Wendling
13d6d446f6 Expand getVTList, getNodeValueTypes, and SelectNodeTo to handle more value types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60381 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 23:28:22 +00:00
Duncan Sands
aaffa05d0a There are no longer any places that require a 
MERGE_VALUES node with only one operand, so get
rid of special code that only existed to handle
that possibility.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60349 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 11:41:29 +00:00
Duncan Sands
1607f05cb7 Change the interface to the type legalization method 
ReplaceNodeResults: rather than returning a node which
must have the same number of results as the original
node (which means mucking around with MERGE_VALUES,
and which is also easy to get wrong since SelectionDAG
folding may mean you don't get the node you expect),
return the results in a vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60348 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-01 11:39:25 +00:00
Eli Friedman
fc69cb475f Followup to r60283: optimize arbitrary width signed divisions as well 
as unsigned divisions.  Same caveats as before.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60284 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-30 06:35:39 +00:00
Eli Friedman
201c9776bd Fix for PR2164: allow transforming arbitrary-width unsigned divides into 
multiplies.

Some more cleverness would be nice, though. It would be nice if we 
could do this transformation on illegal types.  Also, we would 
prefer a narrower constant when possible so that we can use a narrower
multiply, which can be cheaper.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60283 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-30 06:02:26 +00:00
Eli Friedman
86f874d9bb APIntify a test which is potentially unsafe otherwise, and fix the 
nearby FIXME.

I'm not sure what the right way to fix the Cell test was; if the 
approach I used isn't okay, please let me know.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60277 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-30 04:59:26 +00:00
Nick Lewycky
a89d102b32 Silence a warning. 
Despite changing the order of evaluation, this doesn't actually change the
meaning of the statement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60177 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 17:29:52 +00:00
Sanjiv Gupta
9b0f0b5e15 Removing redundant semicolons. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60149 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 05:58:04 +00:00
Evan Cheng
df90841690 Avoid inserting noop's in the middle of a loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60141 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 01:16:00 +00:00
Dale Johannesen
56eca9103e Add a missing case in visitADD. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60137 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-27 00:43:21 +00:00
Sanjiv Gupta
d3f01aa5a1 Allow custom lowering of ADDE/ADDC/SUBE/SUBC operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60102 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-26 11:19:00 +00:00