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4270 Commits

Author SHA1 Message Date
Eric Christopher
155c3679f6 Remove unused function. 
llvm-svn: 52749
 2008-06-26 01:19:35 +00:00
Eric Christopher
4f05c48718 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.

llvm-svn: 52748
 2008-06-26 00:31:12 +00:00
Evan Cheng
5ed0e42cc3 Restore DeadArgElim back to 52570. It's breaking 447.dealII. 
llvm-svn: 52736
 2008-06-25 18:10:09 +00:00
Duncan Sands
93aacd5b48 Pacify gcc-4.3. 
llvm-svn: 52723
 2008-06-25 16:31:18 +00:00
Matthijs Kooijman
45bffc6580 Fix a (false) warning on darwin. 
llvm-svn: 52705
 2008-06-25 08:12:16 +00:00
Matthijs Kooijman
9b78534b71 Fix some cosmetics in comments. 
llvm-svn: 52704
 2008-06-25 08:10:21 +00:00
Evan Cheng
9a3db8fb91 - Use O(1) check of basic block size limit. 
- Avoid speculatively execute vector ops.

llvm-svn: 52703
 2008-06-25 07:50:12 +00:00
Chris Lattner
73b52018e9 Fix PR2488, a case where we deleted stack restores too aggressively. 
llvm-svn: 52702
 2008-06-25 05:59:28 +00:00
Dan Gohman
b9384c5e87 Revert 52645, the loop unroller changes. It caused a regression in 252.eon. 
llvm-svn: 52688
 2008-06-24 20:44:42 +00:00
Dan Gohman
e9f0a28c64 Fix a typo in a comment. 
llvm-svn: 52687
 2008-06-24 18:00:21 +00:00
Matthijs Kooijman
ff03ea8aeb 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.

llvm-svn: 52677
 2008-06-24 16:30:26 +00:00
Matthijs Kooijman
bb456f6b42 Rename a few variables to be more consistent. 
llvm-svn: 52672
 2008-06-24 09:14:10 +00:00
Dan Gohman
11d367fd0c Use use_empty() instead of getNumUses(), avoiding a use list traversal. 
llvm-svn: 52651
 2008-06-23 23:23:49 +00:00
Dan Gohman
24ec9f54bc Fix spelling and grammar in a comment. 
llvm-svn: 52648
 2008-06-23 22:11:52 +00:00
Dan Gohman
7f6ee1cd4b 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.

llvm-svn: 52645
 2008-06-23 21:29:41 +00:00
Evan Cheng
174f11c202 Disable PRE. It's breaking bootstrapping. 
llvm-svn: 52643
 2008-06-23 21:22:35 +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
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
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
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
Chris Lattner
5b0bc729b3 Fix warning when assertions disabled. 
llvm-svn: 52590
 2008-06-21 19:49:01 +00:00
Evan Cheng
2ff47edc37 Enable PRE. 
llvm-svn: 52574
 2008-06-21 07:26:53 +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
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
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
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
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
Bill Wendling
68bdf9f6d4 Remove dead code causing a warning. 
llvm-svn: 52502
 2008-06-19 18:00:44 +00:00
Dan Gohman
98d028eb42 Use the common API for adding instructions to basic blocks instead of 
using BasicBlock::getInstList.

llvm-svn: 52500
 2008-06-19 17:53:32 +00:00
Owen Anderson
87d761460e Be sure to remove values from the value numbering table after we delete them. 
This fixes a failure on povray.

llvm-svn: 52499
 2008-06-19 17:53:26 +00:00
Dan Gohman
a18aa3f3a2 Use Instruction::moveBefore instead of manipulating the instruction list 
directly.

llvm-svn: 52498
 2008-06-19 17:47:47 +00:00
Dan Gohman
01679b25c0 Avoid using BasicBlock::getInstList directly in a few places. 
llvm-svn: 52497
 2008-06-19 17:37:25 +00:00
Owen Anderson
aa850d32db 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.

llvm-svn: 52496
 2008-06-19 17:25:39 +00:00