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bcb85087a7
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1466 Commits

Author SHA1 Message Date
Nick Lewycky
bcb85087a7 Don't crash owhen ComputeLoadResult can't compute the result of the load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132290 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-29 19:33:36 +00:00
Nick Lewycky
1f237b0027 Obey the isVolatile bit on memory intrinsics when analyzing uses of a global 
variable. Noticed by inspection.

Simulate memset in EvaluateFunction where the target of the memset and the
value we're setting are both the null value. Fixes PR10047!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132288 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-29 18:41:56 +00:00
Chris Lattner
98a42b2fc3 fix PR9856, an incorrectly conservative assertion: a global can be 
"stored once" even if its address is compared.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131849 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-22 07:15:13 +00:00
Julien Lerouge
eea6c95d5d Fix a source of non determinism in FindUsedTypes, use a SetVector instead of a 
set.

rdar://9423996


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131283 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-13 05:20:42 +00:00
Devang Patel
65a2f77b0e Preserve line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131112 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 00:03:11 +00:00
Jay Foad
ddcdcc8863 Remove unused STL header includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130068 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-23 19:53:52 +00:00
Chris Lattner
7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
Chris Lattner
b5f18f5df0 remove the StructRetPromotion pass. It is unused, not maintained and 
has some bugs.  If this is interesting functionality, it should be 
reimplemented in the argpromotion pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129314 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-11 23:09:44 +00:00
Nick Lewycky
5ea5c61589 Just because a GlobalVariable's initializer is [N x { i32, void ()* }] doesn't 
mean that it has to be ConstantArray of ConstantStruct. We might have
ConstantAggregateZero, at either level, so don't crash on that.

Also, semi-deprecate the sentinal value. The linker isn't aware of sentinals so
we end up with the two lists appended, each with their "sentinals" on them.
Different parts of LLVM treated sentinals differently, so make them all just
ignore the single entry and continue on with the rest of the list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129307 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-11 22:11:20 +00:00
Jay Foad
562b84b3ae Don't include Operator.h from InstrTypes.h. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129271 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-11 09:35:34 +00:00
Eli Friedman
18a2e50a9b Add back a couple checks removed by r129128; the fact that an intitializer 
is an array of structures doesn't imply it's a ConstantArray of
ConstantStruct.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129207 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-09 09:11:09 +00:00
Nick Lewycky
2c44a80d99 llvm.global_[cd]tor is defined to be either external, or appending with an array 
of { i32, void ()* }. Teach the verifier to verify that, deleting copies of
checks strewn about.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129128 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-08 07:30:21 +00:00
Jay Foad
3e2f74e6d6 Remove some support for ReturnInsts with multiple operands, and for 
returning a scalar value in a function whose return type is a single-
element structure or array.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128810 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-04 07:44:02 +00:00
Jay Foad
3ecfc861b4 Remove PHINode::reserveOperandSpace(). Instead, add a parameter to 
PHINode::Create() giving the (known or expected) number of operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128537 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-30 11:28:46 +00:00
Jay Foad
d8b4fb4aab (Almost) always call reserveOperandSpace() on newly created PHINodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128535 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-30 11:19:20 +00:00
Nick Lewycky
628b337561 No functionality change, just adjust some whitespace for coding style compliance. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128257 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-25 06:05:50 +00:00
Anders Carlsson
807bc2a381 Handle another case that Frits suggested. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128068 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-22 03:21:01 +00:00
Anders Carlsson
b12caf31f4 More cleanups to the OptimizeEmptyGlobalCXXDtors GlobalOpt function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127997 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 14:54:40 +00:00
Anders Carlsson
262a862787 As suggested by Nick Lewycky, ignore debugging intrinsics when trying to decide whether a destructor is empty or not. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127985 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 02:42:27 +00:00
Nick Lewycky
35ee1c921c Fix comments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127984 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-21 02:26:01 +00:00
Anders Carlsson
4f735ca185 Don't try to eliminate invokes to __cxa_atexit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127976 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 20:21:33 +00:00
Anders Carlsson
372ec6aa91 Don't segfault on mutual recursion, as pointed out by Frits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127975 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 20:16:43 +00:00
Anders Carlsson
1f7c7ba380 Address comments from Frits van Bommel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127974 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 19:51:13 +00:00
Anders Carlsson
a201c4c2e6 Add an optimization to GlobalOpt that eliminates calls to __cxa_atexit, if the function passed is empty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127970 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-20 17:59:11 +00:00
Devang Patel
0ef1560f27 These llvm.dbg.* constants are not used anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-09 19:41:33 +00:00
Rafael Espindola
1b5ec068f5 Don't internalize available_externally functions. We already did the right 
thing for variables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127138 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-06 23:41:34 +00:00
Eli Friedman
f291ab2fba Add an obvious missing safety check to DAE::RemoveDeadArgumentsFromCallers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126720 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-01 00:33:47 +00:00
Nick Lewycky
eafe863b6d Instead of keeping two Value*->id# mappings, keep one Value->Value mapping and 
one Value set. This is faster because we only need to use the set when there
isn't already an entry in the map. No functionality change!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126076 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-20 08:11:03 +00:00
Chris Lattner
2ca5c8644e convert ConstantVector::get to use ArrayRef. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125537 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-15 00:14:00 +00:00
Chris Lattner
7583190422 revert my ConstantVector patch, it seems to have made the llvm-gcc 
builders unhappy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125504 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-14 18:15:46 +00:00
Chris Lattner
283c8caccd Switch ConstantVector::get to use ArrayRef instead of a pointer+size 
idiom.  Change various clients to simplify their code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125487 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-14 07:55:32 +00:00
Nick Lewycky
3ba974a1c5 When removing a function from the function set and adding it to deferred, we 
could end up removing a different function than we intended because it was
functionally equivalent, then end up with a comparison of a function against
itself in the next round of comparisons (the one in the function set and the
one on the deferred list). To fix this, I introduce a choice in the form of
comparison for ComparableFunctions, either normal or "pointer only" used to
find exact Function*'s in lookups.

Also add some debugging statements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125180 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-09 06:32:02 +00:00
Nick Lewycky
39c33e3b63 Simplify away redundant test, and document what's going on. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124977 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-06 05:04:00 +00:00
Nick Lewycky
d489332549 Remove specialized comparison of InlineAsm objects. They're uniqued on creation 
now, and this wasn't comparing some of their relevant bits anyhow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124976 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-06 04:33:50 +00:00
Nick Lewycky
8eb3e54592 Remove wasteful caching. This isn't needed for correctness because any function 
that might have changed been affected by a merge elsewhere will have been
removed from the function set, and it isn't needed for performance because we
call grow() ahead of time to prevent reallocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124717 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-02 05:31:01 +00:00
Nick Lewycky
468ee0a90d Rename functions to follow coding standard. Also rejiggers comments. No 
functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124482 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 08:43:14 +00:00
Nick Lewycky
8b5964381e Add a doxygen comment for this class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124480 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 08:19:00 +00:00
Nick Lewycky
285cf8040d Reorder for readability. (Chris, is this what you meant?) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124479 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 07:36:21 +00:00
Nick Lewycky
07317f7d33 Reduce the number of functions we look at in the first pass, and preallocate 
the function equality set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124475 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 05:48:15 +00:00
Benjamin Kramer
9c1858cf4a Unbreak the build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 20:30:54 +00:00
Nick Lewycky
c9d69489eb Expound upon this comparison! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124406 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:51:31 +00:00
Nick Lewycky
dfc5972974 Use dyn_cast instead of isa+cast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124404 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 19:42:43 +00:00
Nick Lewycky
25296e25fd Fix surprising missed optimization in mergefunc where we forgot to consider 
that relationships like "i8* null" is equivalent to "i32* null".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124368 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 08:38:19 +00:00
Nick Lewycky
f6c63c2320 AttrListPtr has an overloaded operator== which does this for us, we should use 
it. No functionality change!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124286 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 09:23:19 +00:00
Nick Lewycky
207c193e7e Teach mergefunc that intptr_t is the same width as a pointer. We still can't 
merge vector<intptr_t>::push_back() and vector<void*>::push_back() because
Enumerate() doesn't realize that "i64* null" and "i8** null" are equivalent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124285 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 09:13:58 +00:00
Nick Lewycky
388f4918fb There are no vectors of pointer or arrays, so we don't need to check vector 
elements for type equivalence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124284 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 08:50:18 +00:00
Nick Lewycky
b38824f866 Teach mergefunc how to emit aliases safely again -- but keep it turned it off 
for now. It's controlled by the HasGlobalAliases variable which is not attached
to any flag yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124182 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 08:56:50 +00:00
Rafael Espindola
c4440e3e30 Add unnamed_addr when we can show that address of a global is not used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123834 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-19 16:32:21 +00:00
Rafael Espindola
daad56a8e3 Reduce indentation and remove commented out code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123729 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 04:36:06 +00:00
Anders Carlsson
0599c6bb3c Teach DAE to look for functions whose arguments are unused, and change all callers to pass in an undefvalue instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123596 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 21:25:33 +00:00