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2013-04-27Struct-path aware TBAA: change the format of TBAAStructType node.Manman Ren
We switch the order of offset and field type to make TBAAStructType node (name, parent node, offset) similar to scalar TBAA node (name, parent node). TypeIsImmutable is added to TBAAStructTag node. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180654 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-11Aliasing rules for struct-path aware TBAA.Manman Ren
Added PathAliases to check if two struct-path tags can alias. Added command line option -struct-path-tbaa. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179337 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Support in AAEvaluator to print alias queries of loads/stores with TBAA tags.Manman Ren
Add "evaluate-tbaa" to print alias queries of loads/stores. Alias queries between pointers do not include TBAA tags. Add testing case for "placement new". TBAA currently says NoAlias. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177772 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-22Use references to attribute groups on the call/invoke instructions.Bill Wendling
Listing all of the attributes for the callee of a call/invoke instruction is way too much and makes the IR unreadable. Use references to attributes instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175877 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-20Modify the LLVM assembly output so that it uses references to represent ↵Bill Wendling
function attributes. This makes the LLVM assembly look better. E.g.: define void @foo() #0 { ret void } attributes #0 = { nounwind noinline ssp } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175605 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16Replace all instances of dg.exp file with lit.local.cfg, since all tests are ↵Eli Bendersky
run with LIT now and now Dejagnu. dg.exp is no longer needed. Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150664 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-28Change CaptureTracking to pass a Use* instead of a Value* when a value isNick Lewycky
captured. This allows the tracker to look at the specific use, which may be especially interesting for function calls. Use this to fix 'nocapture' deduction in FunctionAttrs. The existing one does not iterate until a fixpoint and does not guarantee that it produces the same result regardless of iteration order. The new implementation builds up a graph of how arguments are passed from function to function, and uses a bottom-up walk on the argument-SCCs to assign nocapture. This gets us nocapture more often, and does so rather efficiently and independent of iteration order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147327 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-04Reapply r131781, now that the GVN bug with partially-aliasing loadsDan Gohman
is disabled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132632 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-04Remove this test, which should have been reverted along with r131781.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132628 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-04Reapply r131781 (revert r131809), now that some BasicAA shortcomingsDan Gohman
it exposed are fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132611 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21Revert commit 131781, to see if it fixes the x86-64 dragonegg buildbot.Duncan Sands
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
2011-05-21When BasicAA can determine that two pointers have the same base butDan Gohman
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
2011-04-27When analyzing functions known to only access argument pointees,Dan Gohman
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
2010-12-16-enable-tbaa is on by default now.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16Make memcpyopt TBAA-aware.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121944 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-13Reapply r121520, PartialAlias implementation for BasicAA, now thatDan Gohman
memdep is updated to handle it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121725 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Revert r121520, which may have introduced miscompilations.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121573 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-10Implement PartialAlias checking in BasicAA.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121520 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11Delete unneeded ssp attributes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11TBAA-enable ArgumentPromotion.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11Make Sink tbaa-aware.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118788 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-11Add a testcase which demonstrates alias analysis pass precedence.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-10Fully invalidate cached results when a prior query's size orDan Gohman
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
2010-11-09Teach FunctionAttrs about the VAArg instruction.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118627 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-08Add a testcase for a call which BasicAA says only accesses memory throughDan Gohman
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
2010-11-08Make FunctionAttrs TBAA-aware.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118417 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Teach memdep to use pointsToConstantMemory to determine that loadsDan Gohman
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
2010-10-29Add a basic testcase for TBAA-aware DSE.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117632 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20Add some comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116957 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Don't pass the raw invalid pointer used to represent conflictingDan Gohman
TBAA information to AliasAnalysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Add a basic testcase for TBAA-aware LICM.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116745 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Run tbaa before basicaa, since that's how it's expected to be used.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116731 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Make TypeBasedAliasAnalysis default to doing nothing, with a command-lineDan Gohman
option to enable it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-18Make BasicAliasAnalysis a normal AliasAnalysis implementation whichDan Gohman
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
2010-10-11Add a simple testcase for tbaa.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116272 91177308-0d34-0410-b5e6-96231b3b80d8
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