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4268 Commits

Author SHA1 Message Date
Eric Christopher
872a738775 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52749 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-26 01:19:35 +00:00
Eric Christopher
0d2b0aba42 Move GetConstantStringInfo to lib/Analysis. Remove 
string output routine from Constant. Update all
callers. Change debug intrinsic api slightly to
accomodate move of routine, these now return values
instead of strings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52748 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-26 00:31:12 +00:00
Evan Cheng
890aaa8710 Restore DeadArgElim back to 52570. It's breaking 447.dealII. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52736 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 18:10:09 +00:00
Duncan Sands
b58d211dbb Pacify gcc-4.3. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52723 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 16:31:18 +00:00
Matthijs Kooijman
ea9e516e86 Fix a (false) warning on darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52705 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 08:12:16 +00:00
Matthijs Kooijman
177058b4bd Fix some cosmetics in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52704 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 08:10:21 +00:00
Evan Cheng
e5334ea518 - Use O(1) check of basic block size limit. 
- Avoid speculatively execute vector ops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52703 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 07:50:12 +00:00
Chris Lattner
aa0bf52625 Fix PR2488, a case where we deleted stack restores too aggressively. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52702 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-25 05:59:28 +00:00
Dan Gohman
8dbe7f832e Revert 52645, the loop unroller changes. It caused a regression in 252.eon. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52688 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 20:44:42 +00:00
Dan Gohman
2864ce6065 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52687 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 18:00:21 +00:00
Matthijs Kooijman
1d9a277761 Commit the new DeadArgElim pass again, this time with the gcc bootstrap failures fixed. 
Also add a testcase to reproduce the gcc bootstrap failure in very much reduced form.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52677 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 16:30:26 +00:00
Matthijs Kooijman
4e78908b94 Rename a few variables to be more consistent. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52672 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-24 09:14:10 +00:00
Dan Gohman
cb41e6bf52 Use use_empty() instead of getNumUses(), avoiding a use list traversal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52651 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 23:23:49 +00:00
Dan Gohman
73b43b9b54 Fix spelling and grammar in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52648 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 22:11:52 +00:00
Dan Gohman
55e283c71e Revamp the loop unroller, extending it to correctly update PHI nodes 
in the presence of out-of-loop users of in-loop values and the trip
count is not a known multiple of the unroll count, and to be a bit
simpler overall. This fixes PR2253.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52645 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:29:41 +00:00
Evan Cheng
2e9f0b1a32 Disable PRE. It's breaking bootstrapping. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52643 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-23 21:22:35 +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
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
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
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
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
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
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
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
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
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
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
Owen Anderson
9da52dce89 Be sure to remove values from the value numbering table after we delete them. 
This fixes a failure on povray.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:53:26 +00:00
Dan Gohman
d02d917c72 Use Instruction::moveBefore instead of manipulating the instruction list 
directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52498 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:47:47 +00:00
Dan Gohman
610c0e2b40 Avoid using BasicBlock::getInstList directly in a few places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52497 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:37:25 +00:00
Owen Anderson
3cd8eb314a Revert support for insertvalue and extractvalue instructions for the moment. 
GVN expects that all inputs which to an instruction fall somewhere in the value
hierarchy, which isn't true for these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-19 17:25:39 +00:00