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Author SHA1 Message Date
Evan Cheng
6e5a126667 Instead of adding an isSS field to LiveInterval to denote stack slot. Use top bit of 'reg' instead. If the top bit is set, than the LiveInterval represents a stack slot live interval. 
llvm-svn: 52639
 2008-06-23 21:03:19 +00:00
Wojciech Matyjewicz
1de28ac425 First step to fix PR2088. Implement routine to compute the 
multiplicative inverse of a given number. Modify udivrem to allow input and 
output pairs of arguments to overlap. Patch is based on the work by Chandler
Carruth.

llvm-svn: 52638
 2008-06-23 19:39:50 +00:00
Dan Gohman
5a929b928e Update the .cvs files. 
llvm-svn: 52637
 2008-06-23 18:43:26 +00:00
Dan Gohman
7492d685c7 Fix the types for NumElements variables, and add a comment 
explaining why empty array constants use ValID::createUndef().

llvm-svn: 52636
 2008-06-23 18:40:28 +00:00
Owen Anderson
0dcae02ad4 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.

llvm-svn: 52631
 2008-06-23 17:49:45 +00:00
Chris Lattner
b992911447 minor tidying of comments. 
llvm-svn: 52630
 2008-06-23 17:11:23 +00:00
Dan Gohman
b52f318a0c Remove two convenience constructors because they're now private, and the 
private implementation doesn't really need the convenience.

llvm-svn: 52629
 2008-06-23 16:48:17 +00:00
Dan Gohman
12a793b025 Use std::copy instead of a loop. 
llvm-svn: 52628
 2008-06-23 16:45:24 +00:00
Dan Gohman
d9e2c8b72a More changes from Chris' review: simplify getIndices and avoid 
copying its return value.

llvm-svn: 52627
 2008-06-23 16:39:44 +00:00
Dan Gohman
696e841b14 Remove an unnecessary cast. 
llvm-svn: 52626
 2008-06-23 16:38:10 +00:00
Dan Gohman
84cef04f76 Duncan pointed out this code could be tidied. 
llvm-svn: 52624
 2008-06-23 15:29:14 +00:00
Dan Gohman
35787913ea Fix the syntax of insertvalue in the example. 
llvm-svn: 52623
 2008-06-23 15:26:37 +00:00
Duncan Sands
e7f2c80a8c Port some integer multiplication fixes from LegalizeDAG. 
Bail out with an error if there is no libcall available
for the given size of integer.

llvm-svn: 52622
 2008-06-23 15:15:44 +00:00
Duncan Sands
86e6f1a3b6 Support for expanding the result of EXTRACT_ELEMENT. 
llvm-svn: 52621
 2008-06-23 15:08:15 +00:00
Duncan Sands
1b83cbdebe Cleanup up LegalizeTypes handling of loads and 
stores.

llvm-svn: 52620
 2008-06-23 14:19:45 +00:00
Bill Wendling
d6b7d457cf Make test work on non-x86 machines (like my G4 PPC). 
llvm-svn: 52619
 2008-06-23 06:16:31 +00:00
Owen Anderson
7d4e8f976c 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.

llvm-svn: 52618
 2008-06-23 06:13:12 +00:00
Dan Gohman
62d8bc0480 Improve LSR's dead-phi detection to handle use-def cycles 
with more than two nodes.

llvm-svn: 52617
 2008-06-22 20:44:02 +00:00
Dan Gohman
4ada89e819 Use Loop::block_iterator. 
llvm-svn: 52616
 2008-06-22 20:18:58 +00:00
Dan Gohman
90894ac18b Generalize createSCEV to be able to form SCEV expressions from 
ConstantExprs.

llvm-svn: 52615
 2008-06-22 19:56:46 +00:00
Dan Gohman
81c83d9a1d Use SCEVAddRecExpr::isAffine. 
llvm-svn: 52614
 2008-06-22 19:23:09 +00:00
Dan Gohman
c1aa753f00 Remove unnecessary #includes. 
llvm-svn: 52613
 2008-06-22 19:21:26 +00:00
Dan Gohman
311865bd24 Move a few more SCEVExpander methods out-of-line. 
llvm-svn: 52612
 2008-06-22 19:09:18 +00:00
Chris Lattner
d80c865a09 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.

llvm-svn: 52611
 2008-06-22 17:46:21 +00:00
Duncan Sands
d1d3e67d30 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.

llvm-svn: 52610
 2008-06-22 09:42:16 +00:00
Eli Friedman
369401ef95 Fix for PR2479: correctly optimize expressions like (a > 13) & (a == 
15).

See also PR1800, which is about the signed case.

llvm-svn: 52608
 2008-06-21 23:36:13 +00:00
Dan Gohman
91a43b082c Use Instruction::eraseFromParent(). 
llvm-svn: 52606
 2008-06-21 22:08:46 +00:00
Dan Gohman
e0744f181b Use Function's arg_size() and size() methods. 
llvm-svn: 52605
 2008-06-21 22:06:54 +00:00
Dan Gohman
a41cf16a8f Simplify some getNode calls. 
llvm-svn: 52604
 2008-06-21 22:06:07 +00:00
Dan Gohman
4d2c1733d7 canClobberPhysRegDefs shouldn't called without checking hasPhysRegDefs; 
check this with an assert.

llvm-svn: 52603
 2008-06-21 22:05:24 +00:00
Dan Gohman
e6da01721b Avoid creating a redundant zero APInt. 
llvm-svn: 52602
 2008-06-21 22:03:12 +00:00
Dan Gohman
a313808e69 Use clear() to zero an existing APInt. 
llvm-svn: 52601
 2008-06-21 22:02:15 +00:00
Dan Gohman
7460588026 Use back() instead of [size()-1]. 
llvm-svn: 52600
 2008-06-21 22:00:54 +00:00
Duncan Sands
dd3b6236c8 This file is empty. 
llvm-svn: 52596
 2008-06-21 20:26:50 +00:00
Duncan Sands
1d9305bfb8 Turn off llvm-gcc warnings when running "make check". 
llvm-svn: 52595
 2008-06-21 20:22:58 +00:00
Dan Gohman
bed65a69c3 Use MachineBasicBlock::transferSuccessors. 
llvm-svn: 52594
 2008-06-21 20:21:19 +00:00
Dan Gohman
9b9cf4cf9c Use static_cast instead of reinterpret_cast for casting void*. 
llvm-svn: 52592
 2008-06-21 20:17:03 +00:00
Chris Lattner
5b0bc729b3 Fix warning when assertions disabled. 
llvm-svn: 52590
 2008-06-21 19:49:01 +00:00
Chris Lattner
76d8bbc7c2 fix warning when assertions disabled. 
llvm-svn: 52589
 2008-06-21 19:48:22 +00:00
Chris Lattner
d3308e835f fix warning when assertion disabled. 
llvm-svn: 52588
 2008-06-21 19:47:44 +00:00
Chris Lattner
96b3955e9b fix some warnings when assertions are disabled. 
llvm-svn: 52587
 2008-06-21 19:47:03 +00:00
Dan Gohman
1e71795b8d Remove a redundant return. 
llvm-svn: 52585
 2008-06-21 19:34:57 +00:00
Dan Gohman
3ae70927cf Reorder some fields in SDNode. This avoids padding, 
reducings its size from 80 to 72 on 64-bit hosts.

llvm-svn: 52584
 2008-06-21 19:26:15 +00:00
Dan Gohman
015a5ca374 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.

llvm-svn: 52583
 2008-06-21 19:18:17 +00:00
Dan Gohman
4099d0bf27 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.

llvm-svn: 52582
 2008-06-21 18:35:25 +00:00
Duncan Sands
1dd6ef8f8e 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.

llvm-svn: 52577
 2008-06-21 17:00:47 +00:00
Dan Gohman
3a5a96e045 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%.

llvm-svn: 52576
 2008-06-21 15:52:51 +00:00
Evan Cheng
2ff47edc37 Enable PRE. 
llvm-svn: 52574
 2008-06-21 07:26:53 +00:00
Evan Cheng
1d07cd32c2 Undo spill weight tweak. Need to investigate the performance regressions. 
llvm-svn: 52572
 2008-06-21 06:45:54 +00:00
Dan Gohman
62fb667283 Simplify some template parameterization. 
llvm-svn: 52571
 2008-06-21 01:08:22 +00:00