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3836 Commits

Author SHA1 Message Date
Chris Lattner
74f5c5abea refactor ConstantExpr interfaces a bit around "exactness". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125190 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-09 16:43:07 +00:00
Chris Lattner
eb59ca976c fix comment change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125047 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-07 20:03:14 +00:00
Chris Lattner
f067d584a8 implement .ll and .bc support for nsw/nuw on shl and exact on lshr/ashr. 
Factor some code better.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125006 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-07 16:40:21 +00:00
Chris Lattner
35bda8914c enhance vmcore to know that udiv's can be exact, and add a trivial 
instcombine xform to exercise this.

Nothing forms exact udivs yet though.  This is progress on PR8862



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124992 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-06 21:44:57 +00:00
Jay Foad
0faa60938a Make SwitchInst::removeCase() more efficient. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124659 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-01 09:22:34 +00:00
Duncan Sands
7681c6da60 Have m_One also match constant vectors for which every element is 1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124655 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-01 08:39:12 +00:00
Nick Lewycky
bb25e2c91b Fix 'fcmp one' constant folding. Noticed by inspection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124557 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-30 01:49:58 +00:00
Nick Lewycky
b8787f3403 Fix some formatting and upgrade comments from llvm 1.x to 2.x syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124556 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-30 01:48:50 +00:00
Nick Lewycky
175e7aec13 Add the select optimization recently added to instcombine to constant folding. 
This is the one where one of the branches of the select is another select on
the same condition.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124547 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 20:35:06 +00:00
Jay Foad
9afc527671 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124375 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-27 14:44:55 +00:00
Jay Foad
adede0387b Simplify User::operator delete(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124330 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-26 21:56:10 +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
Rafael Espindola
3971df5203 Move unnamed_addr after the function arguments on Sabre's request. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124209 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-25 19:09:56 +00:00
Chris Lattner
3928af6ac4 teach Value::isDereferenceablePointer that byval arguments are always 
dereferencable, noticed by inspection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124085 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 21:15:29 +00:00
Nick Lewycky
4c93a0f092 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123956 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-21 01:12:09 +00:00
Tobias Grosser
e906921480 Implement requiredTransitive 
The PassManager did not implement the transitivity of requiredTransitive. This
was unnoticed since 2006.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123942 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-20 21:03:22 +00:00
Cameron Zwarich
a9ba456b7c Update a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123879 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-20 03:58:43 +00:00
Cameron Zwarich
f889b3bd6c Remove an unnecessary #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123748 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 06:07:18 +00:00
Cameron Zwarich
4676599e30 Move DominanceFrontier from VMCore to Analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123747 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 06:06:27 +00:00
Cameron Zwarich
5d2cf40c40 There is no point in verifying an analysis that is never updated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123743 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 05:44:04 +00:00
Cameron Zwarich
72d1695f12 Remove some now-unused DominanceFrontier methods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123726 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 04:21:57 +00:00
Jay Foad
0d1941a46f Remove useless Tag enumeration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123623 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 15:18:06 +00:00
Jay Foad
1ed26acc58 Simplify the construction and destruction of Uses. Simplify 
User::dropHungOffUses().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123580 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 15:30:52 +00:00
Jay Foad
bdbe342e86 Move the implementation of the User class into a new source file, 
User.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123575 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 08:10:57 +00:00
Rafael Espindola
ba7c38c36a Allow unnamed_addr on declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123529 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-15 08:15:00 +00:00
Jay Foad
25052d8d64 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123435 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 08:07:43 +00:00
Duncan Sands
c43cee3fbb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123417 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 00:37:45 +00:00
Rafael Espindola
d72479c2f0 Reject uses of unnamed_addr in declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123358 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 01:30:30 +00:00
Jay Foad
67c619ba3e 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123235 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 15:07:38 +00:00
Chris Lattner
57863b8ee0 make domtree verification print something useful on failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123078 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-08 19:55:55 +00:00
Rafael Espindola
bea4626f93 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123063 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-08 16:42:36 +00:00
Jay Foad
8e3914d12e Simplify the allocation and freeing of Users' operand lists, now that 
every BranchInst has a fixed number of operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123027 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-07 20:29:02 +00:00
Jakob Stoklund Olesen
7008f1e9ab Silence a warning from non-standard warning avoidance code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122911 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 21:50:21 +00:00
Duncan Sands
c449a224bb These methods should be "const"; make them so. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122809 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 12:52:29 +00:00
Chris Lattner
9fc5cdf77c split dom frontier handling stuff out to its own DominanceFrontier header, 
so that Dominators.h is *just* domtree.  Also prune #includes a bit.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122714 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-02 22:09:33 +00:00
Chris Lattner
e562dba845 fix PR8867: a crash handling fp128. Thanks to Nick for the testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122613 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 01:33:36 +00:00
Chris Lattner
c0d5496b8a add methods to IRBuilder to create memcpy/memset/memmove. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122571 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 22:49:25 +00:00
Jeffrey Yasskin
8e68c38735 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122458 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 00:58:24 +00:00
Chris Lattner
f1b4eafbfe 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122310 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-21 02:38:05 +00:00
Owen Anderson
3b77f56194 Revert r122114 (CallbackVH observing use-list changes) because it caused severe slowdowns on the Linux self-host configuration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122279 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-20 22:28:03 +00:00
Duncan Sands
0d7ce5ffa4 There is no need for isAssociative to take the type as an argument anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122242 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-20 13:10:23 +00:00
Nick Lewycky
476b242fe7 Add missing standard headers. Patch by Joerg Sonnenberger! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122193 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-19 20:43:38 +00:00
Nick Lewycky
2402123413 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122192 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-19 20:42:43 +00:00
Owen Anderson
a479b23256 Add support to CallbackVH to receive notification when a Value's use-list changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122114 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-18 00:07:15 +00:00
Bob Wilson
26156456dd Remove trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122099 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-17 23:06:32 +00:00
Michael J. Spencer
3ff9563c3e MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> via an out parm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121958 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-16 03:29:14 +00:00
Dan Gohman
5034dd318a Move Value::getUnderlyingObject to be a standalone 
function so that it can live in Analysis instead of
VMCore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121885 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-15 20:02:24 +00:00
Michael J. Spencer
333fb04506 Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121379 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-09 17:36:48 +00:00
Dan Gohman
a6399ae089 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121170 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-07 19:56:51 +00:00
Jay Foad
40f8f6264d 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-07 08:25:19 +00:00