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69435 Commits

Author SHA1 Message Date
Duncan Sands 2dccb8571e Add an outline of the DragonEgg gcc plugin. 
llvm-svn: 83765
 2009-10-11 09:07:15 +00:00
Sebastian Redl 4915e63d3b Test exception spec compatibility on return type and parameters. 
Along the way, use RequireCompleteType when testing exception spec types.
Separate all the ugly spec stuff into its own file.

llvm-svn: 83764
 2009-10-11 09:03:14 +00:00
Zhongxing Xu b8edf2a4dd Introduces a new BindingVal which combines direct and 
default binding for regions. This allows us to simply a lot of code. A
further simplification could be done is that many methods of
regionstore can only work on Store instead of GRState. 

llvm-svn: 83762
 2009-10-11 08:08:02 +00:00
Chris Lattner e374382b8f implement rdar://7293527, a trivial instcombine that llvm-gcc 
gets but clang doesn't, because it is implemented in GCC's
fold routine.

llvm-svn: 83761
 2009-10-11 07:53:15 +00:00
Chris Lattner d1d23e1949 add a helper for matching "1". 
llvm-svn: 83760
 2009-10-11 07:51:25 +00:00
Chris Lattner 97b1405207 implement a transformation in jump threading that is currently 
done by condprop, but do it in a much more general form.  The
basic idea is that we can do a limited form of tail duplication
in the case when we have a branch on a phi.  Moving the branch
up in to the predecessor block makes instruction selection
much easier and encourages chained jump threadings.

llvm-svn: 83759
 2009-10-11 07:24:57 +00:00
Chris Lattner 4140d8bd5c another testcase jump threading shouldn't crash on. 
llvm-svn: 83758
 2009-10-11 07:11:11 +00:00
Chris Lattner ece16f2335 rename a file, remove a poorly reduced testcase. 
llvm-svn: 83757
 2009-10-11 07:10:28 +00:00
Chris Lattner 6ce85e85f5 restructure some code, no functionality change. 
llvm-svn: 83756
 2009-10-11 04:40:21 +00:00
Chris Lattner f466bc84c9 factor some code better and move a function, no functionality change. 
llvm-svn: 83755
 2009-10-11 04:33:43 +00:00
Chris Lattner f99a74e24b make jump threading on a phi with undef inputs happen. 
llvm-svn: 83754
 2009-10-11 04:18:15 +00:00
Chris Lattner 09677258e5 there is no need to run mem2reg after jump threading at LTO time now. 
llvm-svn: 83753
 2009-10-11 04:17:33 +00:00
Chris Lattner bb094e12f2 fix a bunch of bad formatting, delete the dead 
ConstantInt::TheTrueVal/TheFalseVal members.

llvm-svn: 83752
 2009-10-11 04:03:22 +00:00
Chris Lattner 8d186bfafb merge two tests. 
llvm-svn: 83751
 2009-10-11 03:55:30 +00:00
Chris Lattner 041c1dca8b simplify some run lines, convert a test to filecheck. 
llvm-svn: 83750
 2009-10-11 03:54:21 +00:00
Ted Kremenek e959a1cd0e Update release notes blurb on the static analyzer. 
llvm-svn: 83749
 2009-10-11 03:10:25 +00:00
Chris Lattner 71d353dd48 rewrite LCSSA to use SSAUpdate, to only return true if it modifies 
the IR, and to implement the FIXME'd optimization.

llvm-svn: 83748
 2009-10-11 02:53:37 +00:00
Chris Lattner 101dde30ed clean up and simplify some code. Don't use setvector when things will be 
inserted only once, just use vector.  Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.

llvm-svn: 83747
 2009-10-11 01:07:15 +00:00
Chris Lattner b6c65faa64 switch GVN to use SSAUpdater. Besides removing a lot of complexity 
from GVN, this also speeds it up, inserts fewer PHI nodes (see the
testcase) and allows it to remove more loads (due to fewer PHI nodes
standing in the way).

llvm-svn: 83746
 2009-10-10 23:50:30 +00:00
Chris Lattner 9c382cebc5 add a simple helper method. 
llvm-svn: 83745
 2009-10-10 23:41:48 +00:00
Chris Lattner 249265de06 add ability for clients of SSAUpdater to find out about the 
PHI nodes inserted.

llvm-svn: 83744
 2009-10-10 23:15:24 +00:00
Chris Lattner 472330d5d2 clarify 
llvm-svn: 83743
 2009-10-10 23:05:42 +00:00
Chris Lattner 89d2a5c4f3 remove dead code 
llvm-svn: 83742
 2009-10-10 23:04:12 +00:00
Chris Lattner 67cdd8b567 add the ability to get a rewritten value from the middle of a block, 
not just at the end.  Add a big comment explaining when this could
be useful (which never happens for jump threading).

llvm-svn: 83741
 2009-10-10 23:00:11 +00:00
Chris Lattner e474a8d3a7 rename GetValueInBlock -> GetValueAtEndOfBlock to better reflect 
what it does.

llvm-svn: 83740
 2009-10-10 22:41:58 +00:00
Anton Korobeynikov 5b8826b4da It seems that OR operation does not affect status reg at all. 
Remove impdef of SRW. This fixes PR4779

llvm-svn: 83739
 2009-10-10 22:17:47 +00:00
Chris Lattner d4f70053ae fix broken link 
llvm-svn: 83738
 2009-10-10 22:15:25 +00:00
Chris Lattner ab58091692 final changes. 
llvm-svn: 83737
 2009-10-10 22:13:38 +00:00
Chris Lattner 4d74593b6e down to 'major changes' 
llvm-svn: 83736
 2009-10-10 22:02:58 +00:00
Chris Lattner e0948e96d7 more updates 
llvm-svn: 83735
 2009-10-10 21:40:13 +00:00
Chris Lattner 5e2f255c09 add a link to the GSG for info on how to check out svn trunk 
llvm-svn: 83734
 2009-10-10 21:37:16 +00:00
Chris Lattner 10a5a6f057 x86 uses 5 operands for most memory refs now. 
llvm-svn: 83733
 2009-10-10 21:30:55 +00:00
Anders Carlsson 6ce51fdf43 Move our (non-existing) RTTI emission code into CGRtti.cpp. No functionality change. 
llvm-svn: 83732
 2009-10-10 20:49:04 +00:00
Fariborz Jahanian 07ca72725a Generate weak read barriers when reading a weak __block 
variable inside the block.

llvm-svn: 83729
 2009-10-10 20:07:56 +00:00
Duncan Sands b93f40fd72 More spelling and grammar tweaks. 
llvm-svn: 83728
 2009-10-10 20:06:04 +00:00
Benjamin Kramer 9256f3d704 More spelling fixes. 
llvm-svn: 83724
 2009-10-10 19:45:13 +00:00
Duncan Sands 652eb5f51c Spelling fixes. 
llvm-svn: 83722
 2009-10-10 19:30:16 +00:00
Chris Lattner d959509cb5 more tweaks 
llvm-svn: 83721
 2009-10-10 19:26:21 +00:00
Duncan Sands a2411198fe Remove an inappropriate line in the description of the 
clang static analyser.  Decrease duplication in the text.

llvm-svn: 83720
 2009-10-10 19:16:25 +00:00
Chris Lattner 713e8f062f continue decoding chris scribble. 
llvm-svn: 83719
 2009-10-10 19:00:55 +00:00
Chris Lattner a084627472 remove some dead passes 
llvm-svn: 83717
 2009-10-10 18:40:48 +00:00
Chris Lattner 23860ba207 checkpoint. 
llvm-svn: 83716
 2009-10-10 18:33:13 +00:00
Chris Lattner 80d73c7ee7 fix broken anchors. 
llvm-svn: 83715
 2009-10-10 18:26:06 +00:00
Sebastian Redl 5d43164bc2 Implement the core checking for compatible exception specifications in assignment and initialization. 
The exception specification of the assignee must be the same or a subset of the target. In addition, exception specifications on arguments and return types must be equivalent, but this is not implemented yet.
This currently produces two diagnostics for every invalid assignment/initialization, due to the diagnostic produced outside PerformImplicitConversion, e.g. in CheckSingleInitializer. I don't know how to suppress this; in any case I think it is the wrong place for a diagnostic, since there are other diagnostics produced inside the function. So I'm leaving it as it is for the moment.

llvm-svn: 83710
 2009-10-10 12:04:10 +00:00
Chris Lattner 65e69a77e1 use a typedef instead of spelling out an insane type. Yay for auto someday. 
llvm-svn: 83707
 2009-10-10 09:09:20 +00:00
Chris Lattner 84095071ea Change jump threading to use the new SSAUpdater class instead of 
DemoteRegToStack.  This makes it more efficient (because it isn't
creating a ton of load/stores that are eventually removed by a later
mem2reg), and more slightly more effective (because those load/stores
don't get in the way of threading).

llvm-svn: 83706
 2009-10-10 09:05:58 +00:00
Chris Lattner 60d4e69c81 Implement an efficient and fully general SSA update mechanism that 
works on unstructured CFGs.  This implements PR217, our oldest open PR.

llvm-svn: 83705
 2009-10-10 09:04:27 +00:00
Chris Lattner 71db463fcf add some WeakVH::operator='s. Without these, assigning 
a Value* to a WeakVH was constructing a temporary WeakVH
(due to the implicit assignment operator).  This avoids
that cost.

llvm-svn: 83704
 2009-10-10 08:27:29 +00:00
Chris Lattner a0424f5372 change some static_cast into cast, pointed out by Gabor. 
llvm-svn: 83703
 2009-10-10 08:01:27 +00:00
Chris Lattner 99e02edef8 add a version of PHINode::getIncomingBlock that takes a raw 
Use, to complement the version that takes a use_iterator.

llvm-svn: 83702
 2009-10-10 07:42:42 +00:00