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91a43b082c
Commit Graph

23468 Commits

Author SHA1 Message Date
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
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
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
Evan Cheng
b65bceda9c Back out Matthijs' DAE patches. It's miscompiling gcc driver. 
llvm-svn: 52570
 2008-06-21 00:31:44 +00:00
Evan Cheng
c1f551b43e 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.

llvm-svn: 52554
 2008-06-20 21:45:16 +00:00
Duncan Sands
59b9db1fb6 Share some code that is common between integer and 
float expansion (and sometimes vector splitting too).

llvm-svn: 52548
 2008-06-20 18:40:50 +00:00
Duncan Sands
bccd4c58ba Rename the operation of turning a float type into an 
integer of the same type.  Before it was "promotion",
but this is confusing because it is quite different
to promotion of integers.  Call it "softening" instead,
inspired by "soft float".

llvm-svn: 52546
 2008-06-20 17:49:55 +00:00
Dan Gohman
10e3188458 Clean up some uses of std::distance, now that we have allnodes_size. 
llvm-svn: 52545
 2008-06-20 17:15:19 +00:00
Dan Gohman
6a75f18b3b Clean up a use of std::distance. 
llvm-svn: 52544
 2008-06-20 17:11:32 +00:00
Dan Gohman
fcc6f11fc3 Tidy up some commments and use the getAggregateOperand and 
getInsertedValueOperand accessors. Thanks Matthijs!

llvm-svn: 52543
 2008-06-20 16:41:17 +00:00
Dan Gohman
3968f90c4c Fix the conditions under which SCCP should examine insertvalue 
instructions. Thanks to Matthijs Kooijman for pointing this out!

llvm-svn: 52542
 2008-06-20 16:39:44 +00:00
Matthijs Kooijman
54efc9f60e 80 column and trailing whitespace fixes. 
llvm-svn: 52539
 2008-06-20 15:34:07 +00:00
Matthijs Kooijman
7a75a306ff Don't let DeadArgumentElimination attempt to update callers when the return 
type wasn't changed.

llvm-svn: 52538
 2008-06-20 15:25:43 +00:00
Matthijs Kooijman
9a9a6f1122 Don't let DeadArgElimination change the return type ({} into void and {T} 
into T) when no return values are actually dead.

llvm-svn: 52537
 2008-06-20 15:16:45 +00:00
Matthijs Kooijman
1d019c28b3 Explicitely track if any arguments or return values were removed in 
DeadArgumentElimination and assert that the function type does not change if
nothing was changed. This should catch subtle changes in function type that are
not intended.

llvm-svn: 52536
 2008-06-20 14:28:52 +00:00
Matthijs Kooijman
35ac78c162 Remove debug output. 
llvm-svn: 52535
 2008-06-20 14:03:35 +00:00
Matthijs Kooijman
a3222e3730 Recommit r52459, rewriting of the dead argument elimination pass. 
This is a fixed version that no longer uses multimap::equal_range, which
resulted in a pointer invalidation problem.

Also, DAE::InspectedFunctions was not really necessary, so it got removed.

Lastly, this version no longer applies the extra arg hack on functions who did
not have any arguments to start with.

llvm-svn: 52532
 2008-06-20 09:36:16 +00:00
Owen Anderson
5213d215e0 Really disable PRE. 
llvm-svn: 52531
 2008-06-20 08:59:13 +00:00
Chris Lattner
9ab7735924 Fix an error handling redefinition of linkonce functions where the 
types differ.  Patch by Nathan Keynes!

llvm-svn: 52527
 2008-06-20 05:29:39 +00:00
Chris Lattner
e588f546c5 Fix PR2471, which is a bug involving an invalid promotion from a conditional load. 
llvm-svn: 52525
 2008-06-20 05:12:56 +00:00
Gordon Henriksen
50ca4ebe97 Add C binding for ExecutionEngine::addGlobalMapping. 
llvm-svn: 52523
 2008-06-20 02:16:11 +00:00
Dan Gohman
359de5a04e Teach ReturnInst lowering about aggregate return values. 
llvm-svn: 52522
 2008-06-20 01:29:26 +00:00
Owen Anderson
3231e506cb Change around the data structures used to store availability sets, resulting in a GVN+PRE that is faster that GVN alone was before. 
llvm-svn: 52521
 2008-06-20 01:15:47 +00:00
Dan Gohman
b4ee9dfc2d Teach SCCP about insertvalue and extractvalue, and about 
propagating constants across aggregate return values when
insertvalue and extractvalue are used.

llvm-svn: 52520
 2008-06-20 01:15:44 +00:00
Dan Gohman
029d1e045e Teach InlineFunction how to differentiate between multiple-value 
return statements and aggregate returns so that it handles both
correctly.

llvm-svn: 52519
 2008-06-20 01:03:44 +00:00
Evan Cheng
d4c055e1f8 Disable PRE for now. It seems to be breaking llvm-gcc bootstrapping. 
llvm-svn: 52518
 2008-06-20 01:01:07 +00:00
Dan Gohman
0d86d31373 Fix the index calculations for the extractvalue lowering code. 
llvm-svn: 52517
 2008-06-20 00:54:19 +00:00
Dan Gohman
826ad19523 Simplify the ComputeLinearIndex logic and fix a few bugs. 
llvm-svn: 52516
 2008-06-20 00:53:00 +00:00
Dan Gohman
bcddb92f4e Simplify this code. Thanks Chris! 
llvm-svn: 52514
 2008-06-20 00:47:44 +00:00
Evan Cheng
4006f4cdf0 ISD::UNDEF should be expanded recursively / iteratively. 
llvm-svn: 52508
 2008-06-19 22:01:11 +00:00
Owen Anderson
c979fcf8ff Add a hidden -disable-pre flag for testing purposes. This should be removed 
once benchmarking is completed.

llvm-svn: 52506
 2008-06-19 19:57:25 +00:00
Owen Anderson
35fb8dbfef PRE requires that critical edges be split. 
llvm-svn: 52505
 2008-06-19 19:54:19 +00:00