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32 Commits

Author SHA1 Message Date
Bill Wendling
351b7a10e2 Use references to attribute groups on the call/invoke instructions. 
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
 2013-02-22 09:09:42 +00:00
Bill Wendling
7ab6c76ad1 Modify the LLVM assembly output so that it uses references to represent 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
 2013-02-20 07:21:42 +00:00
Eli Bendersky
0f0c411079 Replace all instances of dg.exp file with lit.local.cfg, since all tests are 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
 2012-02-16 06:28:33 +00:00
Nick Lewycky
b48a18903a Change CaptureTracking to pass a Use* instead of a Value* when a value is 
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
 2011-12-28 23:24:21 +00:00
Dan Gohman
5f1312c36e Reapply r131781, now that the GVN bug with partially-aliasing loads 
is disabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132632 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 06:50:18 +00:00
Dan Gohman
baddf6c8b0 Remove this test, which should have been reverted along with r131781. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132628 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 06:21:23 +00:00
Dan Gohman
c122c625ce Reapply r131781 (revert r131809), now that some BasicAA shortcomings 
it exposed are fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 00:46:31 +00:00
Duncan Sands
d22920aae8 Revert commit 131781, to see if it fixes the x86-64 dragonegg buildbot. 
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
 2011-05-21 20:54:46 +00:00
Dan Gohman
424b777171 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@131781 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-21 01:05:08 +00:00
Dan Gohman
bddc1ca18a When analyzing functions known to only access argument pointees, 
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
 2011-04-27 18:39:03 +00:00
Dan Gohman
a4bdf2ea48 -enable-tbaa is on by default now. 
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. 
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
Dan Gohman
0f7f194416 Reapply r121520, PartialAlias implementation for BasicAA, now that 
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. 
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. 
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
Dan Gohman
32d1fe52e2 Delete unneeded ssp attributes. 
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. 
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. 
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. 
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 
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. 
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 
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. 
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 
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. 
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. 
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 
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. 
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. 
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 
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 
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. 
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