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3720 Commits

Author SHA1 Message Date
Jay Foad
284c5bc9bd Fix indentation. 
llvm-svn: 124375
 2011-01-27 14:44:55 +00:00
Jay Foad
db0a7d4143 Simplify User::operator delete(). 
llvm-svn: 124330
 2011-01-26 21:56:10 +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
Rafael Espindola
29e8317caa Move unnamed_addr after the function arguments on Sabre's request. 
llvm-svn: 124209
 2011-01-25 19:09:56 +00:00
Chris Lattner
0277fe2039 teach Value::isDereferenceablePointer that byval arguments are always 
dereferencable, noticed by inspection.

llvm-svn: 124085
 2011-01-23 21:15:29 +00:00
Nick Lewycky
50f86f3414 Add a constant folding of casts from zero to zero. Fixes PR9011! 
While here, I'd like to complain about how vector is not an aggregate type
according to llvm::Type::isAggregateType(), but they're listed under aggregate
types in the LangRef and zero vectors are stored as ConstantAggregateZero.

llvm-svn: 123956
 2011-01-21 01:12:09 +00:00
Tobias Grosser
ea8985cc25 Implement requiredTransitive 
The PassManager did not implement the transitivity of requiredTransitive. This
was unnoticed since 2006.

llvm-svn: 123942
 2011-01-20 21:03:22 +00:00
Cameron Zwarich
bf70725ae3 Update a comment. 
llvm-svn: 123879
 2011-01-20 03:58:43 +00:00
Cameron Zwarich
ea98dd25a5 Remove an unnecessary #include. 
llvm-svn: 123748
 2011-01-18 06:07:18 +00:00
Cameron Zwarich
c8083524f8 Move DominanceFrontier from VMCore to Analysis. 
llvm-svn: 123747
 2011-01-18 06:06:27 +00:00
Cameron Zwarich
caca9a63e6 There is no point in verifying an analysis that is never updated. 
llvm-svn: 123743
 2011-01-18 05:44:04 +00:00
Cameron Zwarich
62a9d4d454 Remove some now-unused DominanceFrontier methods. 
llvm-svn: 123726
 2011-01-18 04:21:57 +00:00
Jay Foad
599c83ed66 Remove useless Tag enumeration. 
llvm-svn: 123623
 2011-01-17 15:18:06 +00:00
Jay Foad
aa0d059b67 Simplify the construction and destruction of Uses. Simplify 
User::dropHungOffUses().

llvm-svn: 123580
 2011-01-16 15:30:52 +00:00
Jay Foad
030a48213f Move the implementation of the User class into a new source file, 
User.cpp.

llvm-svn: 123575
 2011-01-16 08:10:57 +00:00
Rafael Espindola
3b43f22391 Allow unnamed_addr on declarations. 
llvm-svn: 123529
 2011-01-15 08:15:00 +00:00
Jay Foad
fa61721cf2 Remove casts between Value** and Constant**, which won't work if a 
static_cast from Constant* to Value* has to adjust the "this" pointer.
This is groundwork for PR889.

llvm-svn: 123435
 2011-01-14 08:07:43 +00:00
Duncan Sands
44c273d907 Move some shift transforms out of instcombine and into InstructionSimplify. 
While there, I noticed that the transform "undef >>a X -> undef" was wrong.
For example if X is 2 then the top two bits must be equal, so the result can
not be anything.  I fixed this in the constant folder as well.  Also, I made
the transform for "X << undef" stronger: it now folds to undef always, even
though X might be zero.  This is in accordance with the LangRef, but I must
admit that it is fairly aggressive.  Also, I added "i32 X << 32 -> undef"
following the LangRef and the constant folder, likewise fairly aggressive.

llvm-svn: 123417
 2011-01-14 00:37:45 +00:00
Rafael Espindola
f6cae95276 Reject uses of unnamed_addr in declarations. 
llvm-svn: 123358
 2011-01-13 01:30:30 +00:00
Jay Foad
993406aaba FixedNumOperandTraits and VariadicOperandTraits assumed that, given a 
"this" pointer for any subclass of User, you could static_cast it to
User* and then reinterpret_cast that to Use* to get the end of the
operand list. This isn't a safe assumption in general, because the
static_cast might adjust the "this" pointer. Fixed by having these
OperandTraits classes take an extra template parameter, which is the
subclass of User. This is groundwork for PR889.

llvm-svn: 123235
 2011-01-11 15:07:38 +00:00
Chris Lattner
e07601d493 make domtree verification print something useful on failure. 
llvm-svn: 123078
 2011-01-08 19:55:55 +00:00
Rafael Espindola
9f526bcf4d First step in fixing PR8927: 
Add a unnamed_addr bit to global variables and functions. This will be used
to indicate that the address is not significant and therefore the constant
or function can be merged with others.

If an optimization pass can show that an address is not used, it can set this.

Examples of things that can have this set by the FE are globals created to
hold string literals and C++ constructors.

Adding unnamed_addr to a non-const global should have no effect unless
an optimization can transform that global into a constant.

Aliases are not allowed to have unnamed_addr since I couldn't figure
out any use for it.

llvm-svn: 123063
 2011-01-08 16:42:36 +00:00
Jay Foad
a87f52d780 Simplify the allocation and freeing of Users' operand lists, now that 
every BranchInst has a fixed number of operands.

llvm-svn: 123027
 2011-01-07 20:29:02 +00:00
Jakob Stoklund Olesen
bd9910dbe2 Silence a warning from non-standard warning avoidance code. 
llvm-svn: 122911
 2011-01-05 21:50:21 +00:00
Duncan Sands
d252c6dae7 These methods should be "const"; make them so. 
llvm-svn: 122809
 2011-01-04 12:52:29 +00:00
Chris Lattner
e396e846b4 split dom frontier handling stuff out to its own DominanceFrontier header, 
so that Dominators.h is *just* domtree.  Also prune #includes a bit.

llvm-svn: 122714
 2011-01-02 22:09:33 +00:00
Chris Lattner
2f774c1246 fix PR8867: a crash handling fp128. Thanks to Nick for the testcase. 
llvm-svn: 122613
 2010-12-29 01:33:36 +00:00
Chris Lattner
a46fd80777 add methods to IRBuilder to create memcpy/memset/memmove. 
llvm-svn: 122571
 2010-12-26 22:49:25 +00:00
Jeffrey Yasskin
a199652a3e Change all self assignments X=X to (void)X, so that we can turn on a 
new gcc warning that complains on self-assignments and
self-initializations.

llvm-svn: 122458
 2010-12-23 00:58:24 +00:00
Chris Lattner
65c5243bd6 rename MVT::Flag to MVT::Glue. "Flag" is a terrible name for 
something that just glues two nodes together, even if it is
sometimes used for flags.

llvm-svn: 122310
 2010-12-21 02:38:05 +00:00
Owen Anderson
c1eee5ac49 Revert r122114 (CallbackVH observing use-list changes) because it caused severe slowdowns on the Linux self-host configuration. 
llvm-svn: 122279
 2010-12-20 22:28:03 +00:00
Duncan Sands
a37d282962 There is no need for isAssociative to take the type as an argument anymore. 
llvm-svn: 122242
 2010-12-20 13:10:23 +00:00
Nick Lewycky
c85935836b Add missing standard headers. Patch by Joerg Sonnenberger! 
llvm-svn: 122193
 2010-12-19 20:43:38 +00:00
Nick Lewycky
e718af6c63 Add missing std:: prefixes to some calls. C++ doesn't require that <cfoo> 
headers provide symbols outside namespace std and the LLVM coding standards
state that we should prefix all of them.

llvm-svn: 122192
 2010-12-19 20:42:43 +00:00
Owen Anderson
702d715185 Add support to CallbackVH to receive notification when a Value's use-list changes. 
llvm-svn: 122114
 2010-12-18 00:07:15 +00:00
Bob Wilson
21981d44ce Remove trailing whitespace. 
llvm-svn: 122099
 2010-12-17 23:06:32 +00:00
Michael J. Spencer
86f6a9ac6e MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm. 
llvm-svn: 121958
 2010-12-16 03:29:14 +00:00
Dan Gohman
295ba3ab26 Move Value::getUnderlyingObject to be a standalone 
function so that it can live in Analysis instead of
VMCore.

llvm-svn: 121885
 2010-12-15 20:02:24 +00:00
Michael J. Spencer
15483143ec Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients. 
llvm-svn: 121379
 2010-12-09 17:36:48 +00:00
Dan Gohman
54a78a9787 Remove the code from Function::dropAllReferences which replaced 
uses of the function's blocks with undef. This code isn't needed,
because BasicBlock's destructor handles such uses. Also, undef isn't
correct, since blockaddresses may still be used for comparisons
with null.

llvm-svn: 121170
 2010-12-07 19:56:51 +00:00
Jay Foad
79e18ed269 PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120
 2010-12-07 08:25:19 +00:00
Frits van Bommel
e390b379ae Fix PR 4170 by having ExtractValueInst::getIndexedType() reject out-of-bounds indexing. 
Also add asserts that the indices are valid in InsertValueInst::init(). ExtractValueInst already asserts when constructed with invalid indices.

llvm-svn: 120956
 2010-12-05 20:50:26 +00:00
Benjamin Kramer
009451fddc Remove unneeded zero arrays. 
llvm-svn: 120910
 2010-12-04 15:28:22 +00:00
Benjamin Kramer
612c7225ee Apparently APFloat::getZero doesn't like PPCDoubleDoubles. 
llvm-svn: 120909
 2010-12-04 14:43:08 +00:00
Benjamin Kramer
77faee6ba1 Simplify code. No functionality change. 
llvm-svn: 120907
 2010-12-04 14:22:24 +00:00
Michael J. Spencer
d5ec932c3a Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00
Chris Lattner
95c86a8aa6 add a function to the C api to get the context out of a module, patch 
by Eric Dobson!

llvm-svn: 120259
 2010-11-28 20:03:44 +00:00
Chris Lattner
d935e210ee add a 'LLVMConstIntOfArbitraryPrecision' api to the C api, 
patch by Greg Pfeil!

llvm-svn: 119989
 2010-11-23 02:47:22 +00:00
Benjamin Kramer
9141603779 Simplify code. No change in functionality. 
llvm-svn: 119908
 2010-11-20 18:43:35 +00:00
Owen Anderson
598d36b571 Fix an order-of-deallocation issue where the AttrListImpl could be deallocated before the global 
LLVMContext, causing memory errors.  Patch by Peter Collingbourne.

llvm-svn: 119721
 2010-11-18 18:59:13 +00:00