3e2f74e6d6
Remove some support for ReturnInsts with multiple operands, and for
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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
3ecfc861b4
Remove PHINode::reserveOperandSpace(). Instead, add a parameter to
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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
d8b4fb4aab
(Almost) always call reserveOperandSpace() on newly created PHINodes.
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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
628b337561
No functionality change, just adjust some whitespace for coding style compliance.
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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
807bc2a381
Handle another case that Frits suggested.
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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
b12caf31f4
More cleanups to the OptimizeEmptyGlobalCXXDtors GlobalOpt function.
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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
262a862787
As suggested by Nick Lewycky, ignore debugging intrinsics when trying to decide whether a destructor is empty or not.
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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
35ee1c921c
Fix comments
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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
4f735ca185
Don't try to eliminate invokes to __cxa_atexit.
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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
372ec6aa91
Don't segfault on mutual recursion, as pointed out by Frits.
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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
1f7c7ba380
Address comments from Frits van Bommel.
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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
a201c4c2e6
Add an optimization to GlobalOpt that eliminates calls to __cxa_atexit, if the function passed is empty.
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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
0ef1560f27
These llvm.dbg.* constants are not used anymore.
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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
1b5ec068f5
Don't internalize available_externally functions. We already did the right
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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
f291ab2fba
Add an obvious missing safety check to DAE::RemoveDeadArgumentsFromCallers.
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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
eafe863b6d
Instead of keeping two Value*->id# mappings, keep one Value->Value mapping and
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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
2ca5c8644e
convert ConstantVector::get to use ArrayRef.
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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
7583190422
revert my ConstantVector patch, it seems to have made the llvm-gcc
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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
283c8caccd
Switch ConstantVector::get to use ArrayRef instead of a pointer+size
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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
3ba974a1c5
When removing a function from the function set and adding it to deferred, we
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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
39c33e3b63
Simplify away redundant test, and document what's going on.
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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
d489332549
Remove specialized comparison of InlineAsm objects. They're uniqued on creation
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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
8eb3e54592
Remove wasteful caching. This isn't needed for correctness because any function
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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
468ee0a90d
Rename functions to follow coding standard. Also rejiggers comments. No
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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
8b5964381e
Add a doxygen comment for this class.
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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
285cf8040d
Reorder for readability. (Chris, is this what you meant?)
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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
07317f7d33
Reduce the number of functions we look at in the first pass, and preallocate
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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
9c1858cf4a
Unbreak the build.
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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
c9d69489eb
Expound upon this comparison!
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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
dfc5972974
Use dyn_cast instead of isa+cast.
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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
25296e25fd
Fix surprising missed optimization in mergefunc where we forgot to consider
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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
f6c63c2320
AttrListPtr has an overloaded operator== which does this for us, we should use
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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
207c193e7e
Teach mergefunc that intptr_t is the same width as a pointer. We still can't
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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
388f4918fb
There are no vectors of pointer or arrays, so we don't need to check vector
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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
b38824f866
Teach mergefunc how to emit aliases safely again -- but keep it turned it off
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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
c4440e3e30
Add unnamed_addr when we can show that address of a global is not used.
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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
daad56a8e3
Reduce indentation and remove commented out code.
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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
0599c6bb3c
Teach DAE to look for functions whose arguments are unused, and change all callers to pass in an undefvalue instead.
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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
d6e5cbc842
Don't merge two constants if we care about the address of both.
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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
28252b6f0a
fix PR8932, a case where arg promotion could infinitely promote.
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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
66f708f7e5
Improve the safety of my globalopt enhancement by ensuring that the bitcast
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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
d5f656f48b
simplify this code, it is still broken but will follow up on llvm-commits.
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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
0092b1142f
remove the partial specialization pass. It is unmaintained and has bugs.
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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
cd7f0a1a7f
Add missing whitespace.
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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
2820c25e84
Make constmerge a two-pass algorithm so that it won't miss merging
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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
bfa3b90582
Try to unbreak selfhost.
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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
e8f8139429
Add a cache that protects mergefunc's internals from more surprises in DenseSet.
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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
e95a32ce40
Fix a false-positive warning.
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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
cff6b3772b
Enhance GlobalOpt to be able evaluate initializers that involve stores through
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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
c84e3c0c03
Improve the accuracy of the inlining heuristic looking for the
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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
Jay Foad
Nick Lewycky
Anders Carlsson
Devang Patel
Rafael Espindola
Eli Friedman
Chris Lattner
Benjamin Kramer
Owen Anderson
Dale Johannesen