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* Reapply r131781, now that the GVN bug with partially-aliasing loadsDan Gohman2011-06-04
| | | | | | | is disabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132632 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove this test, which should have been reverted along with r131781.Dan Gohman2011-06-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132628 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r131781 (revert r131809), now that some BasicAA shortcomingsDan Gohman2011-06-04
| | | | | | | it exposed are fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132611 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert commit 131781, to see if it fixes the x86-64 dragonegg buildbot.Duncan Sands2011-05-21
| | | | | | | | | | Original log message: When BasicAA can determine that two pointers have the same base but differ by a dynamic offset, return PartialAlias instead of MayAlias. See the comment in the code for details. This fixes PR9971. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131809 91177308-0d34-0410-b5e6-96231b3b80d8
* When BasicAA can determine that two pointers have the same base butDan Gohman2011-05-21
| | | | | | | | differ by a dynamic offset, return PartialAlias instead of MayAlias. See the comment in the code for details. This fixes PR9971. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131781 91177308-0d34-0410-b5e6-96231b3b80d8
* When analyzing functions known to only access argument pointees,Dan Gohman2011-04-27
| | | | | | | | | | only check arguments with pointer types. Update the documentation of IntrReadArgMem reflect this. While here, add support for TBAA tags on intrinsic calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130317 91177308-0d34-0410-b5e6-96231b3b80d8
* -enable-tbaa is on by default now.Dan Gohman2010-12-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121945 91177308-0d34-0410-b5e6-96231b3b80d8
* Make memcpyopt TBAA-aware.Dan Gohman2010-12-16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121944 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r121520, PartialAlias implementation for BasicAA, now thatDan Gohman2010-12-13
| | | | | | | memdep is updated to handle it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121725 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r121520, which may have introduced miscompilations.Dan Gohman2010-12-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121573 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement PartialAlias checking in BasicAA.Dan Gohman2010-12-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121520 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete unneeded ssp attributes.Dan Gohman2010-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118836 91177308-0d34-0410-b5e6-96231b3b80d8
* TBAA-enable ArgumentPromotion.Dan Gohman2010-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118804 91177308-0d34-0410-b5e6-96231b3b80d8
* Make Sink tbaa-aware.Dan Gohman2010-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118788 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a testcase which demonstrates alias analysis pass precedence.Dan Gohman2010-11-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118755 91177308-0d34-0410-b5e6-96231b3b80d8
* Fully invalidate cached results when a prior query's size orDan Gohman2010-11-10
| | | | | | | 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
* Teach FunctionAttrs about the VAArg instruction.Dan Gohman2010-11-09
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118627 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a testcase for a call which BasicAA says only accesses memory throughDan Gohman2010-11-08
| | | | | | | 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
* Make FunctionAttrs TBAA-aware.Dan Gohman2010-11-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118417 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach memdep to use pointsToConstantMemory to determine that loadsDan Gohman2010-10-29
| | | | | | | 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
* Add a basic testcase for TBAA-aware DSE.Dan Gohman2010-10-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117632 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some comments.Dan Gohman2010-10-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116957 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't pass the raw invalid pointer used to represent conflictingDan Gohman2010-10-18
| | | | | | | TBAA information to AliasAnalysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116751 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a basic testcase for TBAA-aware LICM.Dan Gohman2010-10-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116745 91177308-0d34-0410-b5e6-96231b3b80d8
* Run tbaa before basicaa, since that's how it's expected to be used.Dan Gohman2010-10-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116731 91177308-0d34-0410-b5e6-96231b3b80d8
* Make TypeBasedAliasAnalysis default to doing nothing, with a command-lineDan Gohman2010-10-18
| | | | | | | option to enable it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116722 91177308-0d34-0410-b5e6-96231b3b80d8
* Make BasicAliasAnalysis a normal AliasAnalysis implementation whichDan Gohman2010-10-18
| | | | | | | | | | | | | 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
* Add a simple testcase for tbaa.Dan Gohman2010-10-11
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116272 91177308-0d34-0410-b5e6-96231b3b80d8
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