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5686752099
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23553 Commits

Author SHA1 Message Date
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
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
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
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
Duncan Sands
78cd649ad3 Share some code that is common between integer and 
float expansion (and sometimes vector splitting too).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52548 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 18:40:50 +00:00
Duncan Sands
4fc4fd657d 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".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52546 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 17:49:55 +00:00
Dan Gohman
3461cc9e98 Clean up some uses of std::distance, now that we have allnodes_size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52545 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 17:15:19 +00:00
Dan Gohman
9614fcc640 Clean up a use of std::distance. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52544 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 17:11:32 +00:00
Dan Gohman
60ea268645 Tidy up some commments and use the getAggregateOperand and 
getInsertedValueOperand accessors. Thanks Matthijs!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52543 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 16:41:17 +00:00
Dan Gohman
dfaceb49fc Fix the conditions under which SCCP should examine insertvalue 
instructions. Thanks to Matthijs Kooijman for pointing this out!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 16:39:44 +00:00
Matthijs Kooijman
7e43b3be88 80 column and trailing whitespace fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52539 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 15:34:07 +00:00
Matthijs Kooijman
df0891d2ff Don't let DeadArgumentElimination attempt to update callers when the return 
type wasn't changed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52538 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 15:25:43 +00:00
Matthijs Kooijman
03d18569cb Don't let DeadArgElimination change the return type ({} into void and {T} 
into T) when no return values are actually dead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52537 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 15:16:45 +00:00
Matthijs Kooijman
9cb6ec26b3 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52536 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 14:28:52 +00:00
Matthijs Kooijman
1b492b2f8d Remove debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52535 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 14:03:35 +00:00
Matthijs Kooijman
c95e44b4e0 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52532 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 09:36:16 +00:00
Owen Anderson
f2204d7bb1 Really disable PRE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52531 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 08:59:13 +00:00
Chris Lattner
ec91ccba3c Fix an error handling redefinition of linkonce functions where the 
types differ.  Patch by Nathan Keynes!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 05:29:39 +00:00
Chris Lattner
2de3fec61c Fix PR2471, which is a bug involving an invalid promotion from a conditional load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 05:12:56 +00:00
Gordon Henriksen
54227f6752 Add C binding for ExecutionEngine::addGlobalMapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 02:16:11 +00:00
Dan Gohman
ab8ec0a26c Teach ReturnInst lowering about aggregate return values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52522 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:29:26 +00:00
Owen Anderson
6fafe847b2 Change around the data structures used to store availability sets, resulting in a GVN+PRE that is faster that GVN alone was before. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:15:47 +00:00
Dan Gohman
c4b65ea56b Teach SCCP about insertvalue and extractvalue, and about 
propagating constants across aggregate return values when
insertvalue and extractvalue are used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52520 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:15:44 +00:00
Dan Gohman
2c31750cd0 Teach InlineFunction how to differentiate between multiple-value 
return statements and aggregate returns so that it handles both
correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52519 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:03:44 +00:00
Evan Cheng
88d11c03cd Disable PRE for now. It seems to be breaking llvm-gcc bootstrapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52518 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 01:01:07 +00:00
Dan Gohman
dded0fd398 Fix the index calculations for the extractvalue lowering code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52517 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:54:19 +00:00
Dan Gohman
8f36f6d117 Simplify the ComputeLinearIndex logic and fix a few bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52516 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:53:00 +00:00
Dan Gohman
09ef00f979 Simplify this code. Thanks Chris! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52514 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-20 00:47:44 +00:00
Evan Cheng
c8af52c898 ISD::UNDEF should be expanded recursively / iteratively. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 22:01:11 +00:00
Owen Anderson
aa0b63422a Add a hidden -disable-pre flag for testing purposes. This should be removed 
once benchmarking is completed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 19:57:25 +00:00
Owen Anderson
5c274eebc6 PRE requires that critical edges be split. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52505 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 19:54:19 +00:00
Bill Wendling
ac151da204 Remove dead code causing a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52502 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 18:00:44 +00:00
Dan Gohman
52d36e6f87 Use the common API for adding instructions to basic blocks instead of 
using BasicBlock::getInstList.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52500 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:53:32 +00:00