Commit Graph

437 Commits

Author SHA1 Message Date
Chris Lattner
61c70e98ac remove unions from LLVM IR. They are severely buggy and not
being actively maintained, improved, or extended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112356 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-28 04:09:24 +00:00
Oscar Fuentes
ee56c42168 Prefix next' iterator operation with llvm::'.
Fixes potential ambiguity problems on VS 2010.

Patch by nobled!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02 06:00:15 +00:00
Benjamin Kramer
ad2b04c07f Preallocate vector, avoid unnecessary vector growth.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-01 11:43:26 +00:00
Chris Lattner
93604b6de2 Fix PR7658, a problem where type refinement can trigger
constant replacement which was botching its handling of
types.  Use of getType() instead of getRawType() was causing
the type map in constant folding to be updated wrong.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108610 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17 06:13:52 +00:00
Dan Gohman
1eaac53261 Remove the API compatibility layer which converted add, sub, and mul
to fadd, fsub, and fmul, when used with a floating-point type. LLVM
has supported the new instructions since 2.6, so it's time to get
on board.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:44:19 +00:00
Dan Gohman
3b49063a83 Simplify this code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12 22:12:29 +00:00
Chris Lattner
04e3b1ef78 move some method definitions to files that make sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99927 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 20:48:48 +00:00
Chris Lattner
d7ba0f2ade add support for zero initialized unions, patch by Tim Northover!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99818 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29 17:36:02 +00:00
Gabor Greif
60ad781c61 rename use_const_iterator to const_use_iterator for consistency's sake
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99564 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25 23:06:16 +00:00
Talin
196c60a571 replaceUsesOfWithOnConstant implementation for unions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96616 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18 21:43:45 +00:00
Duncan Sands
1df9859c40 There are two ways of checking for a given type, for example isa<PointerType>(T)
and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96344 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 11:11:14 +00:00
Duncan Sands
b0bc6c361d Uniformize the names of type predicates: rather than having isFloatTy and
isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96223 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 16:12:20 +00:00
Chris Lattner
fdfeb6976f Add support for a union type in LLVM IR. Patch by Talin!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 20:49:41 +00:00
Duncan Sands
8991d51ddc Adding missing methods for creating Add, Mul, Neg and Sub with NUW.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 12:53:04 +00:00
Chris Lattner
b29d596072 eliminate a bunch of pointless LLVMContext arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95001 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01 20:48:08 +00:00
Dan Gohman
d75ff3104c Add a getNUWMul function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94982 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01 16:38:14 +00:00
Dan Gohman
2544a1de66 Add a generalized form of ConstantExpr::getOffsetOf which works for
array types as well as struct types, and which accepts arbitrary
Constant indicies.  


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01 16:37:38 +00:00
Dan Gohman
06ed3e788a Make getAlignOf return an i64, for consistency with getSizeOf and
getOffsetOf, and remove the comment about assuming i8 is byte-aligned,
which is no longer applicable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94738 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28 02:43:22 +00:00
Dan Gohman
0f5efe5625 Remove SCEVAllocSizeExpr and SCEVFieldOffsetExpr, and in their place
use plain SCEVUnknowns with ConstantExpr::getSizeOf and
ConstantExpr::getOffsetOf constants. This eliminates a bunch of
special-case code.

Also add code for pattern-matching these expressions, for clients that
want to recognize them.

Move ScalarEvolution's logic for expanding array and vector sizeof
expressions into an element count times the element size, to expose
the multiplication to subsequent folding, into the regular constant
folder.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94737 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28 02:15:55 +00:00
Chris Lattner
0b68a009f6 fix CastInst::castIsValid to reject aggregate types, fixing PR6153:
llvm-as: t.ll:1:25: error: invalid cast opcode for cast from '[4 x i8]' to '[1 x i32]'
@x = constant [1 x i32] bitcast ([4 x i8] c"abcd" to [1 x i32])
                        ^



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26 21:51:43 +00:00
Nick Lewycky
401f3258f6 Fix a crasher trying to fold each element in a comparison between two vectors
if one of the vectors didn't have elements (such as undef). Fixes PR 6096.

Fix an issue in the constant folder where fcmp (<2 x %ty>, <2 x %ty>) would
have <2 x i1> type if constant folding was successful and i1 type if it wasn't.
This exposed a related issue in the bitcode reader.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94069 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21 07:03:21 +00:00
Benjamin Kramer
8c65f6e71c Move remaining stuff to the isInteger predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92771 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 21:05:54 +00:00
Benjamin Kramer
11acaa374c Convert a ton of simple integer type equality tests to the new predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 20:07:06 +00:00
David Greene
d2e63b7fdb Change errs() to dbgs().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92650 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 01:29:19 +00:00
Chris Lattner
5099b31f98 differences between two blockaddress's don't cause a
global variable initializer to require relocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92450 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-03 18:09:40 +00:00
Chris Lattner
83738a20dd remove some misleading comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-30 20:25:09 +00:00
Chris Lattner
cafe9bba32 add a layer of accessors around the Value::SubClassData member, and use
a convention (shadowing the setter with private forwarding function) to
prevent subclasses from accidentally using it.

This exposed some bogosity in ConstantExprs, which was propaging the
opcode of the constant expr into the NUW/NSW/Exact field in the
getWithOperands/getWithOperandReplaced methods.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92239 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29 02:14:09 +00:00
Dan Gohman
411984810e Add utility routines for NSW multiply.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91664 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18 03:10:26 +00:00
Dan Gohman
bdc46c6af5 Add utility routines for creating integer negation operators with NSW set.
Integer negation only overflows with INT_MIN, but that's an important case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91662 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18 02:58:50 +00:00
Chris Lattner
399ac530d6 whitespace cleanup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90834 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-08 05:31:46 +00:00
Daniel Dunbar
2928c83b01 Pass StringRef by value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06 10:58:06 +00:00
Chris Lattner
c4775e4b97 remove a bunch of locking from LLVMContextImpl. Since only one thread
can be banging on a context at a time, this isn't needed.  Owen, please
review.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 18:42:03 +00:00
Chris Lattner
4a7642ec9c the verifier shouldn't modify the IR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 18:11:50 +00:00
Chris Lattner
d0ec2352ae Fix BlockAddress::replaceUsesOfWithOnConstant to correctly
maintain the block use count in SubclassData.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 03:03:03 +00:00
Chris Lattner
cdfc940912 Revert 85678/85680. The decision is to stay with the current form of
indirectbr, thus we don't need "blockaddr(@func, null)".  Eliminate it
for simplicity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85699 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 01:27:45 +00:00
Chris Lattner
7d83ebcadd Make blockaddress(@func, null) be valid, and make 'deleting a basic
block with a blockaddress still referring to it' replace the invalid 
blockaddress with a new blockaddress(@func, null) instead of a 
inttoptr(1).

This changes the bitcode encoding format, and still needs codegen 
support (this should produce a non-zero value, referring to the entry
block of the function would also be quite reasonable).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85678 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31 20:08:37 +00:00
Chris Lattner
3821176b2e make hasAddressTaken() constant time by storing a refcount in BB's subclass data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30 22:33:29 +00:00
Chris Lattner
0eeb913aa1 Previously, all operands to Constant were themselves constant.
In the new world order, BlockAddress can have a BasicBlock operand.
This doesn't permute much, because if you have a ConstantExpr (or
anything more specific than Constant) we still know the operand has
to be a Constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 05:14:34 +00:00
Chris Lattner
5d81befc21 'static const void *X = &&y' can only be put in the
readonly section if a reference to the containing function
is valid in the readonly section.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85370 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 04:12:16 +00:00
Chris Lattner
2ee11eccdd IR support for the new BlockAddress constant kind. This is
untested and there is no way to use it, next up: doing battle
with asmparser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85349 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-28 00:01:44 +00:00
Owen Anderson
59d5aac0b4 Banish ConstantsLock. It's serving no purpose other than slowing things down
at the moment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84529 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-19 20:11:52 +00:00
Chris Lattner
cf0fe8d813 strength reduce a ton of type equality tests to check the typeid (Through
the new predicates I added) instead of going through a context and doing a
pointer comparison.  Besides being cheaper, this allows a smart compiler
to turn the if sequence into a switch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83297 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05 05:54:46 +00:00
Nick Lewycky
b13105fbf6 Requires element types in a constant initializer to match the element types of
of the constant. This reverts r6544 and r7428.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83270 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-03 19:30:43 +00:00
Jeffrey Yasskin
1fb613c43d Assert that ConstantArrays are created with correctly-typed elements.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83168 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30 21:08:08 +00:00
Duncan Sands
3548ea8e90 For the NSWSub support in the builder to actually be useable,
there need to be corresponding changes to the constant folders,
done in this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82862 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-26 15:35:35 +00:00
Dan Gohman
a23643d5b7 Rename ConstantFP's getInf to getInfinity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82823 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 23:40:21 +00:00
Dan Gohman
f344f7f008 Add a ConstantFP::getInf utility function for creating infinity ConstantFPs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82818 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 23:00:48 +00:00
Dan Gohman
e3394d4a49 When a constant's type is refined, update the constant in place
instead of cloning and RAUWing it.

 - Make AbstractTypeUser a friend of Value so that it can offer
   its subclasses a way to update a Value's type in place. This
   is better than a universally visible setType method on Value,
   and it's sufficient for the immediate need.

 - Eliminate the constant "convert" functions. This eliminates a
   lot of logic duplication, and fixes a complicated bug where a
   constant can't actually be cloned during the type refinement
   process because some of the types that its folder needs are
   half-destroyed, being in the middle of refinement themselves.

 - Move the getValType functions from being static overloaded
   functions in Constants.cpp to be members of class template
   specializations in ConstantsContext.h. This means that the
   code ends up getting instantiated twice, however it also
   makes it possible to eliminate all "convert" functions, so
   it's not a big net code size increase. And if desired, the
   duplicate instantiations could be eliminated with some
   reorganization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81861 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-15 15:58:07 +00:00
Dan Gohman
3bfbc4587a Teach lib/VMCore/ConstantFold.cpp how to set the inbounds keyword and
how to fold notionally-out-of-bounds array getelementptr indices instead
of just doing these in lib/Analysis/ConstantFolding.cpp, because it can
be done in a fairly general way without TargetData, and because not all
constants are visited by lib/Analysis/ConstantFolding.cpp. This enables
more constant folding.

Also, set the "inbounds" flag when the getelementptr indices are
one-past-the-end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81483 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 00:04:14 +00:00
Dan Gohman
e6992f728a Factor out the code for checking that all indices in a getelementptr are
within the notional bounds of the static type of the getelementptr (which
is not the same as "inbounds") from GlobalOpt into a utility routine,
and use it in ConstantFold.cpp to check whether there are any mis-behaved
indices.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81478 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-10 23:37:55 +00:00