Chris Lattner
895ace08e0
fix rdar://8813415 - a miscompilation of 164.gzip that loop-idiom
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exposed. It turns out to be a latent bug in basicaa, scary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122772 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 21:03:33 +00:00
Chris Lattner
135bf42187
filecheckize
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122771 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-03 21:01:26 +00:00
Dan Gohman
a4bdf2ea48
-enable-tbaa is on by default now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 02:53:48 +00:00
Dan Gohman
387f28aff4
Make memcpyopt TBAA-aware.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121944 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16 02:51:19 +00:00
Duncan Sands
fea3b218d6
Move Sub simplifications and additional Add simplifications out of
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instcombine and into InstructionSimplify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121861 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15 14:07:39 +00:00
Dan Gohman
0f7f194416
Reapply r121520, PartialAlias implementation for BasicAA, now that
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memdep is updated to handle it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-13 22:50:24 +00:00
Dan Gohman
839c092548
Revert r121520, which may have introduced miscompilations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121573 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10 21:48:28 +00:00
Dan Gohman
3bd5e52676
Implement PartialAlias checking in BasicAA.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121520 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10 20:47:03 +00:00
Chris Lattner
9fd9f9fd57
remove fixme comment too.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30 23:25:01 +00:00
Chris Lattner
7fd16cef85
check in *all* files. This is now handled by my previous DSE commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120492 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-30 23:23:59 +00:00
NAKAMURA Takumi
86c817e9d4
test: Check the feature 'loadable_module' with load modules in %llvmshlibdir.
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%llvmshlibdir should be 'bin' on Cygming.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120282 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-29 07:58:32 +00:00
Dan Gohman
32d1fe52e2
Delete unneeded ssp attributes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11 21:08:46 +00:00
Dan Gohman
56653f0df8
TBAA-enable ArgumentPromotion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11 18:09:32 +00:00
Dan Gohman
5aae3dcb53
Make Sink tbaa-aware.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118788 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11 16:21:47 +00:00
Dan Gohman
f00833c401
Add a testcase which demonstrates alias analysis pass precedence.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11 01:03:30 +00:00
Dan Gohman
733c54da1e
Fully invalidate cached results when a prior query's size or
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type is insufficient for, or incompatible with, the current query.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10 21:45:11 +00:00
Dan Gohman
4cf0dcfb44
Teach FunctionAttrs about the VAArg instruction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-09 20:17:38 +00:00
Dan Gohman
e5dd6624ea
Add a testcase for a call which BasicAA says only accesses memory through
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its arguments and which TBAA says doesn't write to memory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118439 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08 20:20:11 +00:00
Dan Gohman
ea8900f5df
Make FunctionAttrs TBAA-aware.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118417 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08 17:12:04 +00:00
Dan Gohman
cd5c123a1d
Teach memdep to use pointsToConstantMemory to determine that loads
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from constant memory don't alias any stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29 01:14:04 +00:00
Dan Gohman
b338bcb0b4
Add a basic testcase for TBAA-aware DSE.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117632 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29 00:54:02 +00:00
Dan Gohman
561ac17d20
Add some comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116957 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 22:04:02 +00:00
Dan Gohman
fb8096dee5
Don't pass the raw invalid pointer used to represent conflicting
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TBAA information to AliasAnalysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18 21:28:00 +00:00
Dan Gohman
992ac3e6c6
Add a basic testcase for TBAA-aware LICM.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116745 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18 21:00:09 +00:00
Dan Gohman
bdcbf6152b
Run tbaa before basicaa, since that's how it's expected to be used.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116731 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18 18:45:59 +00:00
Dan Gohman
01b58f637c
Make TypeBasedAliasAnalysis default to doing nothing, with a command-line
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option to enable it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18 18:17:47 +00:00
Dan Gohman
c1be92f3bb
Make BasicAliasAnalysis a normal AliasAnalysis implementation which
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does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.
Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.
Update tests to explicitly request -basicaa.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116720 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18 18:04:47 +00:00
Dan Gohman
c015723131
Add a simple testcase for tbaa.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116272 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-11 23:54:13 +00:00
Benjamin Kramer
3e45b77612
Remove PointerTracking tests.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115072 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-29 19:20:35 +00:00
Eli Friedman
39e30124e5
PR7959: Handle negative scales in GEPs correctly in BasicAA for non-64-bit
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targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114015 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15 20:08:03 +00:00
Chris Lattner
042ff0358d
remove some noise from tests.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02 22:35:33 +00:00
Michael J. Spencer
17d3983730
Fix constant-over-index.ll test on windows.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112483 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-30 15:08:02 +00:00
Chris Lattner
2215c607c3
refix PR1143 by making basicaa analyze zexts of indices aggresively,
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which I broke with a recent patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18 23:09:49 +00:00
Chris Lattner
285d06ca93
fix a buggy test
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111354 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18 04:55:12 +00:00
Chris Lattner
91b2307a89
fix PR7589: In brief:
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gep P, (zext x) != gep P, (sext x)
DecomposeGEPExpression was getting this wrong, confusing
basicaa.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111352 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18 04:28:19 +00:00
Chris Lattner
903175096e
filecheckize and detrivialize.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111350 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18 04:25:43 +00:00
Dan Gohman
4ee87398e8
When analyzing loop exit conditions combined with and and or, don't
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make any assumptions about when the two conditions will agree on when
to permit the loop to exit. This fixes PR7845.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110758 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11 00:12:36 +00:00
Tobias Grosser
73362c820b
RegionInfo: Do not assert if a BB is not part of the dominance tree.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 09:54:35 +00:00
Dan Gohman
e26a7b5e21
Implement a proper getModRefInfo for va_arg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06 18:24:38 +00:00
Dan Gohman
130073904f
Implement AccessesArguments checking in the two-callsite form
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of BasicAA::getModRefInfo. This allows BasicAA to say that two
memset calls to non-aliasing memory locations don't interfere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110393 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 23:34:50 +00:00
Dan Gohman
5fa417c790
Fix memdep's code for reasoning about dependences between two calls. A Ref
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response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.
Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110382 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 22:09:15 +00:00
Dan Gohman
34fa82f7e8
Revert r110270 for now. It appears to uncover a memdep bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05 00:43:10 +00:00
Dan Gohman
907857d746
The trouble with testing for "ModRef" and "NoModRef" is that
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one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110280 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 23:37:55 +00:00
Dan Gohman
3dcc91ee8c
The two-callsite form of AliasAnalysis::getModRefInfo is documented
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to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.
Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04 22:56:29 +00:00
Tobias Grosser
f96b006367
Add new RegionInfo pass.
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The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22 07:46:31 +00:00
Dan Gohman
9e86f4364b
Remove interprocedural-basic-aa and associated code. The AliasAnalysis
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interface needs implementations to be consistent, so any code which
wants to support different semantics must use a different interface.
It's not currently worthwhile to add a new interface for this new
concept.
Document that AliasAnalysis doesn't support cross-function queries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107776 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07 14:27:09 +00:00
Dan Gohman
21de4c0daf
Remove context sensitivity concerns from interprocedural-basic-aa, and
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make it more aggressive in cases where both pointers are known to live
in the same function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107420 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-01 20:08:40 +00:00
Dan Gohman
70eff63008
Revert the part of r107257 which introduced new logic for using
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nsw and nuw flags from IR Instructions. On further consideration,
this isn't valid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30 17:27:11 +00:00
Dan Gohman
3e7f7cbea9
Add a testcase for scev-aa's new capability.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107258 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30 07:17:47 +00:00
Dan Gohman
af0824701b
Add a few more interesting testcases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107177 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29 18:17:11 +00:00