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87 Commits

Author SHA1 Message Date
Bill Wendling
46d5dd9b05 Use the Attributes::get method which takes an AttrVal value directly to simplify the code a bit. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166009 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-16 05:23:31 +00:00
Bill Wendling
702cc91aa1 Move the Attributes::Builder outside of the Attributes class and into its own class named AttrBuilder. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165960 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-15 20:35:56 +00:00
Bill Wendling
07aae2e7d5 Add an enum for the return and function indexes into the AttrListPtr object. This gets rid of some magic numbers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165924 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-15 07:29:08 +00:00
Bill Wendling
cb3de0bc80 Attributes Rewrite 
Convert the internal representation of the Attributes class into a pointer to an
opaque object that's uniqued by and stored in the LLVMContext object. The
Attributes class then becomes a thin wrapper around this opaque
object. Eventually, the internal representation will be expanded to include
attributes that represent code generation options, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165917 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-15 04:46:55 +00:00
Bill Wendling
c416795fea Remove the bitwise assignment OR operator from the Attributes class. Replace it with the equivalent from the builder class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165895 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-14 07:35:59 +00:00
Bill Wendling
2e879bcd52 Use the enum value of the attributes when adding them to the attributes builder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165494 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-09 09:11:20 +00:00
Bill Wendling
3fa5709342 Fix. Apply the no capture attribute to the correct parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165469 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-09 00:51:40 +00:00
Bill Wendling
c40abb0b68 Convert to using the Attributes::Builder class to create attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165468 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-09 00:47:36 +00:00
Craig Topper
c2945e44d5 Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164090 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-18 02:01:41 +00:00
Dmitri Gribenko
c5252da873 Fix Doxygen issues: 
* wrap code blocks in \code ... \endcode;
* refer to parameter names in paragraphs correctly (\arg is not what most
  people want -- it starts a new paragraph);
* use \param instead of \arg to document parameters in order to be consistent
  with the rest of the codebase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163902 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-14 14:57:36 +00:00
Dan Gohman
0d1bc5f916 Detect overflow in the path count computation. rdar://12277446. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163739 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-12 20:45:17 +00:00
Dan Gohman
230768bd13 Make provenance checking conservative in cases when 
pointers-to-strong-pointers may be in play. These can lead to retains and
releases happening in unstructured ways, foiling the optimizer. This fixes
rdar://12150909.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163180 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-04 23:16:20 +00:00
Dan Gohman
40e466091e Don't use for loops for code that is only intended to execute once. No 
intended functionality change. Thanks to Ahmed Charles for spotting it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162686 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-27 18:31:36 +00:00
Dan Gohman
c72d3be389 An objc_retain can serve as a may-use for a different pointer. 
rdar://11931823.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160637 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-23 19:27:31 +00:00
Sylvestre Ledru
c8e41c5917 Fix a typo (the the => the) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160621 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-23 08:51:15 +00:00
Dan Gohman
58fb3401fa Fix the objc_autoreleasedReturnValue optimization code to locate 
the call correctly even in the case where it is an invoke. This
fixes rdar://11714057.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159157 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-25 19:47:37 +00:00
Benjamin Kramer
d9b0b02561 Fix typos found by http://github.com/lyda/misspell-check 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157885 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-02 10:20:22 +00:00
Chris Lattner
55dc5c77a3 Reimplement the intrinsic verifier to use the same table as Intrinsic::getDefinition, 
making it stronger and more sane.

Delete the code from tblgen that produced the old code.

Besides being a path forward in intrinsic sanity, this also eliminates a bunch of
machine generated code that was compiled into Function.o


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157545 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-27 19:37:05 +00:00
Dan Gohman
4c8f909cdf Mark an unreachable region of code with llvm_unreachable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157197 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-21 17:41:28 +00:00
Dan Gohman
ce5d8b0d03 Fix replacing all the users of objc weak runtime routines 
when deleting them. rdar://11434915.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157080 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-18 22:17:29 +00:00
Dan Gohman
95b8cf1f11 Fix the objc_storeStrong recognizer to stop before walking off the 
end of a basic block if there's no store.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156520 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-09 23:08:33 +00:00
Craig Topper
b12af898c3 Remove unused variable to get rid of warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156466 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-09 07:08:58 +00:00
Dan Gohman
0daef3d902 Miscellaneous accumulated cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156445 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-08 23:39:44 +00:00
Dan Gohman
4670dace66 Fix objc_storeStrong pattern matching to catch a potential use of the 
old value after the store but before it is released.
This fixes rdar:/11116986.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156442 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-08 23:34:08 +00:00
Dan Gohman
447989cb68 Miscellaneous accumulated cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155725 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 18:56:31 +00:00
Dan Gohman
50ade65982 Simplify the known retain count tracking; use a boolean state instead 
of a precise count. Also, move RRInfo's Partial field into PtrState,
now that it won't increase the size.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155513 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-25 00:50:46 +00:00
Dan Gohman
eeeb7752a8 Build custom predecessor and successor lists for each basic block. 
These lists exclude invoke unwind edges and loop backedges which
are being ignored. This makes it easier to ignore them
consistently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155500 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-24 22:53:18 +00:00
Dan Gohman
8b74e5afda Avoid a bug in the path count computation, preventing an infinite 
loop repeatedlt making the same change. This is for rdar://11256239.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155160 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-19 21:50:46 +00:00
Dan Gohman
3b5b2a22ca Don't crash on code where the user put __attribute__((constructor)) on 
a function with arguments. This fixes rdar://11265785.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155073 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-18 22:24:33 +00:00
Dan Gohman
d6bf201fa2 Add some comments, and fix a few places that missed setting Changed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154687 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-13 18:57:48 +00:00
Dan Gohman
4423477548 Consider ObjC runtime calls objc_storeWeak and others which make a copy of 
their argument as "escape" points for objc_retainBlock optimization.
This fixes rdar://11229925.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154682 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-13 18:28:58 +00:00
Dan Gohman
6c189ecbe6 Use the new Use-aware dominates method to apply the objc runtime 
library return value optimization for phi uses. Even when the
phi itself is not dominated, the specific use may be dominated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154647 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-13 01:08:28 +00:00
Dan Gohman
511568dd1f Don't move objc_autorelease calls past autorelease pool boundaries when 
optimizing autorelease calls on phi nodes with null operands.
This fixes rdar://11207070.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154642 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-13 00:59:57 +00:00
Dan Gohman
036ebfd874 Fix accidentally inverted logic from r152803, and make the 
testcase slightly less trivial. This fixes rdar://11171718.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154118 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-05 20:27:21 +00:00
Francois Pichet
b54a5eda6d Fix the MSVC build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153366 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-24 01:36:37 +00:00
Dan Gohman
6fedb3c401 Don't convert objc_retainAutoreleasedReturnValue to objc_retain if it 
is retaining the return value of an invoke that it immediately follows.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153344 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-23 18:09:00 +00:00
Dan Gohman
fbab4a8c8a It's not possible to insert code immediately after an invoke in the 
same basic block, and it's not safe to insert code in the successor
blocks if the edges are critical edges. Splitting those edges is
possible, but undesirable, especially on the unwind side. Instead,
make the bottom-up code motion to consider invokes to be part of
their successor blocks, rather than part of their parent blocks, so
that it doesn't push code past them and onto the edges. This fixes
PR12307.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153343 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-23 17:47:54 +00:00
Dan Gohman
c7f5c6e0e3 Refactor the code for visiting instructions out into helper functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153267 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-22 18:24:56 +00:00
Rafael Espindola
2453dff96a Short term fix for pr12270 before we change dominates to handle unreachable 
code.
While here, reduce indentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152803 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-15 15:52:59 +00:00
Dan Gohman
8b11fdd8bb When an invoke is marked with metadata indicating its unwind edge 
should be ignored by ARC optimization, don't insert new ARC runtime
calls in the unwind destination.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152748 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-14 23:05:06 +00:00
Dan Gohman
5992f67e68 When identifying exit nodes for the reverse-CFG reverse-post-order 
traversal, consider nodes for which the only successors are backedges
which the traversal is ignoring to be exit nodes. This fixes a problem
where the bottom-up traversal was failing to visit split blocks along
split loop backedges. This fixes rdar://10989035.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152421 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-09 18:50:52 +00:00
Dan Gohman
70e2968866 Fix an iterator invalidation problem. operator[] on a DenseMap 
can insert a new element, invalidating iterators. Use find
instead, and handle the case where the key is not found explicitly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151871 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-02 01:26:46 +00:00
Dan Gohman
22cc4ccc9e Misc micro-optimizations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151869 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-02 01:13:53 +00:00
Dan Gohman
dbe266be35 Calls and invokes with the new clang.arc.no_objc_arc_exceptions 
metadata may still unwind, but only in ways that the ARC
optimizer doesn't need to consider. This permits more
aggressive optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150829 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-17 18:59:53 +00:00
Dan Gohman
a3b08d68bd Just like in regular escape analysis, loads and stores through 
(but not of) a block pointer do not cause the block pointer to
escape. This fixes rdar://10803830.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150424 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-13 22:57:02 +00:00
David Blaikie
4d6ccb5f68 More dead code removal (using -Wunreachable-code) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-20 21:51:11 +00:00
Dan Gohman
0cdece4389 Set the "tail" flag on pattern-matched objc_storeStrong calls. 
rdar://10531041.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148490 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-19 19:14:36 +00:00
Dan Gohman
2f77bbd1bf Add a depth limit to avoid runaway recursion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148419 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-18 21:24:45 +00:00
Dan Gohman
1dae3e965c Use llvm.global_ctors to locate global constructors instead 
of recognizing them by name.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148416 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-18 21:19:38 +00:00
Dan Gohman
2f6263c96a Add a new ObjC ARC optimization pass to eliminate unneeded 
autorelease push+pop pairs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148330 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-17 20:52:24 +00:00