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Author SHA1 Message Date
Dan Gohman
ebb5a971d9 Fix the types for NumElements variables, and add a comment 
explaining why empty array constants use ValID::createUndef().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52636 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 18:40:28 +00:00
Owen Anderson
b70a571c99 Tighten the conditions under which we do PRE, remove some unneeded code, and correct our preserved analyses list, since we 
do now change the CFG by splitting critical edges during PRE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52631 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 17:49:45 +00:00
Chris Lattner
2a6a645709 minor tidying of comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52630 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 17:11:23 +00:00
Dan Gohman
2f27e174a9 Remove two convenience constructors because they're now private, and the 
private implementation doesn't really need the convenience.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52629 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:48:17 +00:00
Dan Gohman
7894ea75b5 Use std::copy instead of a loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52628 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:45:24 +00:00
Dan Gohman
1a203571ca More changes from Chris' review: simplify getIndices and avoid 
copying its return value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52627 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:39:44 +00:00
Dan Gohman
19a81633b0 Remove an unnecessary cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52626 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 16:38:10 +00:00
Dan Gohman
0a4627d71f Duncan pointed out this code could be tidied. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52624 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:29:14 +00:00
Dan Gohman
52bb2db709 Fix the syntax of insertvalue in the example. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:26:37 +00:00
Duncan Sands
e9c80f4d57 Port some integer multiplication fixes from LegalizeDAG. 
Bail out with an error if there is no libcall available
for the given size of integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52622 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:15:44 +00:00
Duncan Sands
4a307ecce6 Support for expanding the result of EXTRACT_ELEMENT. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52621 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 15:08:15 +00:00
Duncan Sands
ab09b7e8f3 Cleanup up LegalizeTypes handling of loads and 
stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52620 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 14:19:45 +00:00
Bill Wendling
04eeefb32a Make test work on non-x86 machines (like my G4 PPC). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52619 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 06:16:31 +00:00
Owen Anderson
ae18bd4246 At Chris' suggestion, move the liveness and worklist datastructures into 
instance variables so they can be allocated just once, and reuse the worklist
as the dead list as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52618 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 06:13:12 +00:00
Dan Gohman
cbfe5bbe88 Improve LSR's dead-phi detection to handle use-def cycles 
with more than two nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52617 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 20:44:02 +00:00
Dan Gohman
9b78763fce Use Loop::block_iterator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52616 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 20:18:58 +00:00
Dan Gohman
6c459a28ec Generalize createSCEV to be able to form SCEV expressions from 
ConstantExprs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52615 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:56:46 +00:00
Dan Gohman
17f1972c77 Use SCEVAddRecExpr::isAffine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52614 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:23:09 +00:00
Dan Gohman
09d3fdc254 Remove unnecessary #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52613 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:21:26 +00:00
Dan Gohman
11f6d3b478 Move a few more SCEVExpander methods out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52612 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 19:09:18 +00:00
Chris Lattner
963a97f1a3 Fix PR2369 by making scalarrepl more careful about promoting 
structures.  Its default threshold is to promote things that are
smaller than 128 bytes, which is sane.  However, it is not sane
to do this for things that turn into 128 *registers*.  Add a cap
on the number of registers introduced, defaulting to 128/4=32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52611 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 17:46:21 +00:00
Duncan Sands
69bfb15ecd Make custom lowering of ADD work correctly. This 
fixes PR2476; patch by Richard Osborne.  The same
problem exists for a bunch of other operators, but
I'm ignoring this because they will be automagically
fixed when the new LegalizeTypes infrastructure lands,
since it already solves this problem centrally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52610 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-22 09:42:16 +00:00
Eli Friedman
5c1f172213 Fix for PR2479: correctly optimize expressions like (a > 13) & (a == 
15).

See also PR1800, which is about the signed case.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 23:36:13 +00:00
Dan Gohman
1adec83ae8 Use Instruction::eraseFromParent(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52606 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:08:46 +00:00
Dan Gohman
4d515d0b09 Use Function's arg_size() and size() methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52605 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:06:54 +00:00
Dan Gohman
5686752099 Simplify some getNode calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52604 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:06:07 +00:00
Dan Gohman
2f1d3108e4 canClobberPhysRegDefs shouldn't called without checking hasPhysRegDefs; 
check this with an assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52603 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:05:24 +00:00
Dan Gohman
95df6b3603 Avoid creating a redundant zero APInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52602 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:03:12 +00:00
Dan Gohman
317adcc9c6 Use clear() to zero an existing APInt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52601 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:02:15 +00:00
Dan Gohman
719de53742 Use back() instead of [size()-1]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52600 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 22:00:54 +00:00
Duncan Sands
befc9c16fa This file is empty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52596 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 20:26:50 +00:00
Duncan Sands
53ebe352ab Turn off llvm-gcc warnings when running "make check". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52595 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 20:22:58 +00:00
Dan Gohman
0011dc4738 Use MachineBasicBlock::transferSuccessors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52594 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 20:21:19 +00:00
Dan Gohman
933e51c5e3 Use static_cast instead of reinterpret_cast for casting void*. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52592 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 20:17:03 +00:00
Chris Lattner
629c1a3f78 Fix warning when assertions disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52590 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:49:01 +00:00
Chris Lattner
9d2c9bd113 fix warning when assertions disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52589 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:48:22 +00:00
Chris Lattner
48a0eec1da fix warning when assertion disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52588 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:47:44 +00:00
Chris Lattner
a1aabe422f fix some warnings when assertions are disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52587 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:47:03 +00:00
Dan Gohman
8d96144b0e Remove a redundant return. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52585 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:34:57 +00:00
Dan Gohman
cdb7388233 Reorder some fields in SDNode. This avoids padding, 
reducings its size from 80 to 72 on 64-bit hosts.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52584 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:26:15 +00:00
Dan Gohman
94d7a5f815 Remove ScheduleDAG's SUnitMap altogether. Instead, use SDNode's NodeId 
field, which is otherwise unused after instruction selection, as an index
into the SUnit array.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52583 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 19:18:17 +00:00
Dan Gohman
3627e34486 Add a priority queue class, which is a wrapper around std::priority_queue 
and provides fairly efficient removal of arbitrary elements. Switch
ScheduleDAGRRList from std::set to this new priority queue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52582 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 18:35:25 +00:00
Duncan Sands
a1ace76c70 Support for load/store of expanded float types. I 
don't know if a truncating store is possible here,
but added support for it anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52577 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 17:00:47 +00:00
Dan Gohman
4c8c83022b Change ScheduleDAG's SUnitMap from DenseMap<SDNode*, vector<SUnit*> > 
to DenseMap<SDNode*, SUnit*>, and adjust the way cloned SUnit nodes are
handled so that only the original node needs to be in the map.
This speeds up llc on 447.dealII.llvm.bc by about 2%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52576 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 15:52:51 +00:00
Evan Cheng
4ce138cc55 Enable PRE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52574 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 07:26:53 +00:00
Evan Cheng
c3417609ae Undo spill weight tweak. Need to investigate the performance regressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52572 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 06:45:54 +00:00
Dan Gohman
16c6859651 Simplify some template parameterization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52571 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 01:08:22 +00:00
Evan Cheng
9f99b7c595 Back out Matthijs' DAE patches. It's miscompiling gcc driver. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52570 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-21 00:31:44 +00:00
Ted Kremenek
6fa1c051dc Updated VS build system. Patch provided by Cedric Venet: 
http://lists.cs.uiuc.edu/pipermail/llvmdev/2008-June/015446.html



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52564 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 22:19:12 +00:00
Evan Cheng
3e172254c1 Enhanced heuristic to determine the *best* register to spill. Instead of picking the register with the lowest spill weight. Consider (up to) 2 additional registers with spill weights that are close to the lowest spill weight. The one with fewest defs and uses that conflicts with the current interval (weighted by loop depth) is the spill candidate. 
This is not always a win, but there are much more wins than loses and wins tend to be more noticeable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52554 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 21:45:16 +00:00