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6190 Commits

Author SHA1 Message Date
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
Dan Gohman
2ad8245566 LiveRanges are represented as half-open ranges. Fix the findLiveInMBBs code 
and the LiveInterval.h top-level comment and accordingly. This fixes blocks
having spurious live-in registers in boundary cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-26 05:50:31 +00:00
Bill Wendling
740464e616 A simplification for checking whether the signs of the operands and sum differ. Thanks, Duncan. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60043 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 19:40:17 +00:00
Dan Gohman
878ef1d5bc Suppress warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60041 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 18:53:54 +00:00
Bill Wendling
a6af91ae12 Now with the correct type for the 0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60016 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 08:19:22 +00:00
Bill Wendling
7ebfea4175 Get rid of unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60015 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 08:13:20 +00:00
Bill Wendling
c0062fb755 Hacker's Delight says, "Signed integer overflow of addition occurs if and only 
if the operands have the same sign and the sum has sign opposite to that of the
operands."


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60014 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 08:12:19 +00:00
Dan Gohman
21d9003087 Initial support for anti-dependence breaking. Currently this code does not 
introduce any new spilling; it just uses unused registers.

Refactor the SUnit topological sort code out of the RRList scheduler and
make use of it to help with the post-pass scheduler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59999 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-25 00:52:40 +00:00
Bill Wendling
41ea7e7eb3 - Make lowering of "add with overflow" customizable by back-ends. 
- Mark "add with overflow" as having a custom lowering for X86. Give it a null
  lowering representation for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 19:21:46 +00:00
Dan Gohman
942b8c8533 Check in the rest of this change. The isAntiDep flag needs to be passed 
to removePred because an SUnit can both data-depend and anti-depend
on the same SUnit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59969 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:33:52 +00:00
Dan Gohman
974b5f53f7 Pass the isAntiDep argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59968 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:24:27 +00:00
Dan Gohman
cb72dd6776 Run post-RA scheduling after branch folding, as it tends to 
obscure tail-merging opportunities.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 17:22:52 +00:00
Matthijs Kooijman
faa3d82a31 Minor fix debug for register allocation debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59961 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 16:01:21 +00:00
Duncan Sands
25cf2275ff If the type legalizer actually legalized anything 
(this doesn't happen that often, since most code
does not use illegal types) then follow it by a
DAG combiner run that is allowed to generate
illegal operations but not illegal types.  I didn't
modify the target combiner code to distinguish like
this between illegal operations and illegal types,
so it will not produce illegal operations as well
as not producing illegal types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59960 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 14:53:14 +00:00
Evan Cheng
24ac408ce8 Eliminate some unused variable compile time warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59952 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-24 07:09:49 +00:00