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1454 Commits

Author SHA1 Message Date
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
Rafael Espindola
d6e5cbc842 Don't merge two constants if we care about the address of both. 
This fixes the original testcase in PR8927. It also causes a clang
binary built with a patched clang to increase in size by 0.21%.

We can probably get some of the size back by writing a pass that
detects that a global never has its pointer compared and adds
unnamed_addr to it (maybe extend global opt). It is also possible that
there are some other cases clang could add unnamed_addr to.

I will investigate extending globalopt next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123584 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 17:05:09 +00:00
Chris Lattner
28252b6f0a fix PR8932, a case where arg promotion could infinitely promote. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123574 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 08:09:24 +00:00
Owen Anderson
66f708f7e5 Improve the safety of my globalopt enhancement by ensuring that the bitcast 
of the stored value to the new store type is always.  Also, add a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123563 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 04:33:33 +00:00
Chris Lattner
d5f656f48b simplify this code, it is still broken but will follow up on llvm-commits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 02:05:10 +00:00
Chris Lattner
0092b1142f remove the partial specialization pass. It is unmaintained and has bugs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123554 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 00:27:10 +00:00
Nick Lewycky
cd7f0a1a7f Add missing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123543 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-15 18:42:52 +00:00
Nick Lewycky
2820c25e84 Make constmerge a two-pass algorithm so that it won't miss merging 
opporuntities. Fixes PR8978.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123541 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-15 18:14:21 +00:00
Benjamin Kramer
bfa3b90582 Try to unbreak selfhost. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123537 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-15 11:25:34 +00:00
Nick Lewycky
e8f8139429 Add a cache that protects mergefunc's internals from more surprises in DenseSet. 
Also, replace tabs with spaces. Yes, it's 2011.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123535 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-15 10:16:23 +00:00
Owen Anderson
e95a32ce40 Fix a false-positive warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123480 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 22:31:13 +00:00
Owen Anderson
cff6b3772b Enhance GlobalOpt to be able evaluate initializers that involve stores through 
bitcasts, at least in simple cases.  This fixes clang's CodeGenCXX/virtual-base-dtor.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123477 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 22:19:20 +00:00
Dale Johannesen
c84e3c0c03 Improve the accuracy of the inlining heuristic looking for the 
case where a static caller is itself inlined everywhere else, and
thus may go away if it doesn't get too big due to inlining other
things into it.  If there are references to the caller other than
calls, it will not be removed; account for this.
This results in same-day completion of the case in PR8853.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122821 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:01:54 +00:00