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1469 Commits

Author SHA1 Message Date
Chris Lattner
d456ff35d1 Revamp the "ConstantStruct::get" methods. Previously, these were scattered 
all over the place in different styles and variants.  Standardize on two
preferred entrypoints: one that takes a StructType and ArrayRef, and one that
takes StructType and varargs.

In cases where there isn't a struct type convenient, we now add a
ConstantStruct::getAnon method (whose name will make more sense after a few
more patches land).  

It would be "really really nice" if the ConstantStruct::get and 
ConstantVector::get methods didn't make temporary std::vectors.

llvm-svn: 133412
 2011-06-20 04:01:31 +00:00
John McCall
1cf92d93f0 When deleting a basic block, remove call edges only for non-intrinsics. 
llvm-svn: 132803
 2011-06-09 20:31:09 +00:00
Rafael Espindola
0cab70db0d Improve the handling of available_externally and llvm.global_ctors. 
llvm-svn: 132775
 2011-06-09 14:38:09 +00:00
Nick Lewycky
58d87d5490 Don't crash owhen ComputeLoadResult can't compute the result of the load. 
llvm-svn: 132290
 2011-05-29 19:33:36 +00:00
Nick Lewycky
07ed4434b8 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!

llvm-svn: 132288
 2011-05-29 18:41:56 +00:00
Chris Lattner
98ce5cd957 fix PR9856, an incorrectly conservative assertion: a global can be 
"stored once" even if its address is compared.

llvm-svn: 131849
 2011-05-22 07:15:13 +00:00
Julien Lerouge
b2c1721752 Fix a source of non determinism in FindUsedTypes, use a SetVector instead of a 
set.

rdar://9423996

llvm-svn: 131283
 2011-05-13 05:20:42 +00:00
Devang Patel
ca956d0334 Preserve line number information. 
llvm-svn: 131112
 2011-05-10 00:03:11 +00:00
Jay Foad
c146569beb Remove unused STL header includes. 
llvm-svn: 130068
 2011-04-23 19:53:52 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Chris Lattner
2e4621a4a6 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.

llvm-svn: 129314
 2011-04-11 23:09:44 +00:00
Nick Lewycky
75e67d4dc2 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.

llvm-svn: 129307
 2011-04-11 22:11:20 +00:00
Jay Foad
0d5ca4cf44 Don't include Operator.h from InstrTypes.h. 
llvm-svn: 129271
 2011-04-11 09:35:34 +00:00
Eli Friedman
f0ba0c54ec 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.

llvm-svn: 129207
 2011-04-09 09:11:09 +00:00
Nick Lewycky
ac1fe011df 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.

llvm-svn: 129128
 2011-04-08 07:30:21 +00:00
Jay Foad
fc232f270b 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.

llvm-svn: 128810
 2011-04-04 07:44:02 +00:00
Jay Foad
53632b7c03 Remove PHINode::reserveOperandSpace(). Instead, add a parameter to 
PHINode::Create() giving the (known or expected) number of operands.

llvm-svn: 128537
 2011-03-30 11:28:46 +00:00
Jay Foad
dc5a008237 (Almost) always call reserveOperandSpace() on newly created PHINodes. 
llvm-svn: 128535
 2011-03-30 11:19:20 +00:00
Nick Lewycky
3772213010 No functionality change, just adjust some whitespace for coding style compliance. 
llvm-svn: 128257
 2011-03-25 06:05:50 +00:00
Anders Carlsson
8f934f6652 Handle another case that Frits suggested. 
llvm-svn: 128068
 2011-03-22 03:21:01 +00:00
Anders Carlsson
41cc428751 More cleanups to the OptimizeEmptyGlobalCXXDtors GlobalOpt function. 
llvm-svn: 127997
 2011-03-21 14:54:40 +00:00
Anders Carlsson
59d24b6777 As suggested by Nick Lewycky, ignore debugging intrinsics when trying to decide whether a destructor is empty or not. 
llvm-svn: 127985
 2011-03-21 02:42:27 +00:00
Nick Lewycky
2f6da949e9 Fix comments 
llvm-svn: 127984
 2011-03-21 02:26:01 +00:00
Anders Carlsson
097f3f44a8 Don't try to eliminate invokes to __cxa_atexit. 
llvm-svn: 127976
 2011-03-20 20:21:33 +00:00
Anders Carlsson
07922b7344 Don't segfault on mutual recursion, as pointed out by Frits. 
llvm-svn: 127975
 2011-03-20 20:16:43 +00:00
Anders Carlsson
1b29d560bf Address comments from Frits van Bommel. 
llvm-svn: 127974
 2011-03-20 19:51:13 +00:00
Anders Carlsson
afcc55f09c Add an optimization to GlobalOpt that eliminates calls to __cxa_atexit, if the function passed is empty. 
llvm-svn: 127970
 2011-03-20 17:59:11 +00:00
Devang Patel
c969bd2ff1 These llvm.dbg.* constants are not used anymore. 
llvm-svn: 127352
 2011-03-09 19:41:33 +00:00
Rafael Espindola
6535a2911b Don't internalize available_externally functions. We already did the right 
thing for variables.

llvm-svn: 127138
 2011-03-06 23:41:34 +00:00
Eli Friedman
c00dc3f262 Add an obvious missing safety check to DAE::RemoveDeadArgumentsFromCallers. 
llvm-svn: 126720
 2011-03-01 00:33:47 +00:00
Nick Lewycky
cd05f2a659 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!

llvm-svn: 126076
 2011-02-20 08:11:03 +00:00
Chris Lattner
db204cbe42 convert ConstantVector::get to use ArrayRef. 
llvm-svn: 125537
 2011-02-15 00:14:00 +00:00
Chris Lattner
ee7f7c2494 revert my ConstantVector patch, it seems to have made the llvm-gcc 
builders unhappy.

llvm-svn: 125504
 2011-02-14 18:15:46 +00:00
Chris Lattner
34f32cb4c2 Switch ConstantVector::get to use ArrayRef instead of a pointer+size 
idiom.  Change various clients to simplify their code.

llvm-svn: 125487
 2011-02-14 07:55:32 +00:00
Nick Lewycky
b162446cda 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.

llvm-svn: 125180
 2011-02-09 06:32:02 +00:00
Nick Lewycky
7e863fb906 Simplify away redundant test, and document what's going on. 
llvm-svn: 124977
 2011-02-06 05:04:00 +00:00
Nick Lewycky
fb03aee332 Remove specialized comparison of InlineAsm objects. They're uniqued on creation 
now, and this wasn't comparing some of their relevant bits anyhow.

llvm-svn: 124976
 2011-02-06 04:33:50 +00:00
Nick Lewycky
4f38aaec24 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.

llvm-svn: 124717
 2011-02-02 05:31:01 +00:00
Nick Lewycky
f9a384e203 Rename functions to follow coding standard. Also rejiggers comments. No 
functionality change.

llvm-svn: 124482
 2011-01-28 08:43:14 +00:00
Nick Lewycky
edbe62c10d Add a doxygen comment for this class. 
llvm-svn: 124480
 2011-01-28 08:19:00 +00:00
Nick Lewycky
28f2b64333 Reorder for readability. (Chris, is this what you meant?) 
llvm-svn: 124479
 2011-01-28 07:36:21 +00:00
Nick Lewycky
744bd3872f Reduce the number of functions we look at in the first pass, and preallocate 
the function equality set.

llvm-svn: 124475
 2011-01-28 05:48:15 +00:00
Benjamin Kramer
114c20e190 Unbreak the build. 
llvm-svn: 124426
 2011-01-27 20:30:54 +00:00
Nick Lewycky
675f10c258 Expound upon this comparison! 
llvm-svn: 124406
 2011-01-27 19:51:31 +00:00
Nick Lewycky
af3989a145 Use dyn_cast instead of isa+cast. 
llvm-svn: 124404
 2011-01-27 19:42:43 +00:00
Nick Lewycky
864a35740a Fix surprising missed optimization in mergefunc where we forgot to consider 
that relationships like "i8* null" is equivalent to "i32* null".

llvm-svn: 124368
 2011-01-27 08:38:19 +00:00
Nick Lewycky
8c38fe01dd AttrListPtr has an overloaded operator== which does this for us, we should use 
it. No functionality change!

llvm-svn: 124286
 2011-01-26 09:23:19 +00:00
Nick Lewycky
e4eac7ff9a 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.

llvm-svn: 124285
 2011-01-26 09:13:58 +00:00
Nick Lewycky
41fa5796ca There are no vectors of pointer or arrays, so we don't need to check vector 
elements for type equivalence.

llvm-svn: 124284
 2011-01-26 08:50:18 +00:00
Nick Lewycky
b20b284b35 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.

llvm-svn: 124182
 2011-01-25 08:56:50 +00:00