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* llvm.global_[cd]tor is defined to be either external, or appending with an arrayNick Lewycky2011-04-081-20/+5
| | | | | | | of { i32, void ()* }. Teach the verifier to verify that, deleting copies of checks strewn about. llvm-svn: 129128
* Remove some support for ReturnInsts with multiple operands, and forJay Foad2011-04-041-1/+1
| | | | | | | returning a scalar value in a function whose return type is a single- element structure or array. llvm-svn: 128810
* Remove PHINode::reserveOperandSpace(). Instead, add a parameter toJay Foad2011-03-303-5/+3
| | | | | | PHINode::Create() giving the (known or expected) number of operands. llvm-svn: 128537
* (Almost) always call reserveOperandSpace() on newly created PHINodes.Jay Foad2011-03-303-1/+5
| | | | llvm-svn: 128535
* No functionality change, just adjust some whitespace for coding style ↵Nick Lewycky2011-03-251-2/+2
| | | | | | compliance. llvm-svn: 128257
* Handle another case that Frits suggested.Anders Carlsson2011-03-221-2/+4
| | | | llvm-svn: 128068
* More cleanups to the OptimizeEmptyGlobalCXXDtors GlobalOpt function.Anders Carlsson2011-03-211-15/+9
| | | | llvm-svn: 127997
* As suggested by Nick Lewycky, ignore debugging intrinsics when trying to ↵Anders Carlsson2011-03-211-0/+7
| | | | | | decide whether a destructor is empty or not. llvm-svn: 127985
* Fix commentsNick Lewycky2011-03-211-2/+2
| | | | llvm-svn: 127984
* Don't try to eliminate invokes to __cxa_atexit.Anders Carlsson2011-03-201-0/+6
| | | | llvm-svn: 127976
* Don't segfault on mutual recursion, as pointed out by Frits.Anders Carlsson2011-03-201-4/+6
| | | | llvm-svn: 127975
* Address comments from Frits van Bommel.Anders Carlsson2011-03-201-7/+16
| | | | llvm-svn: 127974
* Add an optimization to GlobalOpt that eliminates calls to __cxa_atexit, if ↵Anders Carlsson2011-03-201-0/+101
| | | | | | the function passed is empty. llvm-svn: 127970
* These llvm.dbg.* constants are not used anymore.Devang Patel2011-03-091-3/+0
| | | | llvm-svn: 127352
* Don't internalize available_externally functions. We already did the rightRafael Espindola2011-03-061-0/+2
| | | | | | thing for variables. llvm-svn: 127138
* Add an obvious missing safety check to DAE::RemoveDeadArgumentsFromCallers.Eli Friedman2011-03-011-1/+1
| | | | llvm-svn: 126720
* Instead of keeping two Value*->id# mappings, keep one Value->Value mapping andNick Lewycky2011-02-201-12/+14
| | | | | | | 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! llvm-svn: 126076
* convert ConstantVector::get to use ArrayRef.Chris Lattner2011-02-151-2/+1
| | | | llvm-svn: 125537
* revert my ConstantVector patch, it seems to have made the llvm-gccChris Lattner2011-02-141-1/+2
| | | | | | builders unhappy. llvm-svn: 125504
* Switch ConstantVector::get to use ArrayRef instead of a pointer+sizeChris Lattner2011-02-141-2/+1
| | | | | | idiom. Change various clients to simplify their code. llvm-svn: 125487
* When removing a function from the function set and adding it to deferred, weNick Lewycky2011-02-091-2/+19
| | | | | | | | | | | | | 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. llvm-svn: 125180
* Simplify away redundant test, and document what's going on.Nick Lewycky2011-02-061-2/+5
| | | | llvm-svn: 124977
* Remove specialized comparison of InlineAsm objects. They're uniqued on creationNick Lewycky2011-02-061-6/+2
| | | | | | now, and this wasn't comparing some of their relevant bits anyhow. llvm-svn: 124976
* Remove wasteful caching. This isn't needed for correctness because any functionNick Lewycky2011-02-021-23/+2
| | | | | | | | 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. llvm-svn: 124717
* Rename functions to follow coding standard. Also rejiggers comments. NoNick Lewycky2011-01-281-89/+88
| | | | | | functionality change. llvm-svn: 124482
* Add a doxygen comment for this class.Nick Lewycky2011-01-281-0/+2
| | | | llvm-svn: 124480
* Reorder for readability. (Chris, is this what you meant?)Nick Lewycky2011-01-281-148/+150
| | | | llvm-svn: 124479
* Reduce the number of functions we look at in the first pass, and preallocateNick Lewycky2011-01-281-1/+3
| | | | | | the function equality set. llvm-svn: 124475
* Unbreak the build.Benjamin Kramer2011-01-271-1/+1
| | | | llvm-svn: 124426
* Expound upon this comparison!Nick Lewycky2011-01-271-0/+2
| | | | llvm-svn: 124406
* Use dyn_cast instead of isa+cast.Nick Lewycky2011-01-271-2/+1
| | | | llvm-svn: 124404
* Fix surprising missed optimization in mergefunc where we forgot to considerNick Lewycky2011-01-271-3/+12
| | | | | | that relationships like "i8* null" is equivalent to "i32* null". llvm-svn: 124368
* AttrListPtr has an overloaded operator== which does this for us, we should useNick Lewycky2011-01-261-4/+2
| | | | | | it. No functionality change! llvm-svn: 124286
* Teach mergefunc that intptr_t is the same width as a pointer. We still can'tNick Lewycky2011-01-261-1/+7
| | | | | | | merge vector<intptr_t>::push_back() and vector<void*>::push_back() because Enumerate() doesn't realize that "i64* null" and "i8** null" are equivalent. llvm-svn: 124285
* There are no vectors of pointer or arrays, so we don't need to check vectorNick Lewycky2011-01-261-7/+1
| | | | | | elements for type equivalence. llvm-svn: 124284
* Teach mergefunc how to emit aliases safely again -- but keep it turned it offNick Lewycky2011-01-251-25/+79
| | | | | | | for now. It's controlled by the HasGlobalAliases variable which is not attached to any flag yet. llvm-svn: 124182
* Add unnamed_addr when we can show that address of a global is not used.Rafael Espindola2011-01-191-13/+42
| | | | llvm-svn: 123834
* Reduce indentation and remove commented out code.Rafael Espindola2011-01-181-122/+101
| | | | llvm-svn: 123729
* Teach DAE to look for functions whose arguments are unused, and change all ↵Anders Carlsson2011-01-161-1/+61
| | | | | | callers to pass in an undefvalue instead. llvm-svn: 123596
* Don't merge two constants if we care about the address of both.Rafael Espindola2011-01-161-22/+38
| | | | | | | | | | | | | | 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. llvm-svn: 123584
* fix PR8932, a case where arg promotion could infinitely promote.Chris Lattner2011-01-161-24/+51
| | | | llvm-svn: 123574
* Improve the safety of my globalopt enhancement by ensuring that the bitcastOwen Anderson2011-01-161-12/+22
| | | | | | of the stored value to the new store type is always. Also, add a testcase. llvm-svn: 123563
* simplify this code, it is still broken but will follow up on llvm-commits.Chris Lattner2011-01-161-15/+5
| | | | llvm-svn: 123558
* remove the partial specialization pass. It is unmaintained and has bugs.Chris Lattner2011-01-163-230/+0
| | | | llvm-svn: 123554
* Add missing whitespace.Nick Lewycky2011-01-151-2/+2
| | | | llvm-svn: 123543
* Make constmerge a two-pass algorithm so that it won't miss mergingNick Lewycky2011-01-151-4/+34
| | | | | | opporuntities. Fixes PR8978. llvm-svn: 123541
* Try to unbreak selfhost.Benjamin Kramer2011-01-151-0/+1
| | | | llvm-svn: 123537
* Add a cache that protects mergefunc's internals from more surprises in DenseSet.Nick Lewycky2011-01-151-5/+27
| | | | | | Also, replace tabs with spaces. Yes, it's 2011. llvm-svn: 123535
* Fix a false-positive warning.Owen Anderson2011-01-141-1/+3
| | | | llvm-svn: 123480
* Enhance GlobalOpt to be able evaluate initializers that involve stores throughOwen Anderson2011-01-141-2/+49
| | | | | | bitcasts, at least in simple cases. This fixes clang's CodeGenCXX/virtual-base-dtor.cpp llvm-svn: 123477
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