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343 Commits

Author SHA1 Message Date
Dan Gohman
f372cf869b Reapply r116831 and r116839, converting AliasAnalysis to use 
uint64_t, plus fixes for places I missed before.

llvm-svn: 116875
 2010-10-19 22:54:46 +00:00
Dan Gohman
b4aa503501 Revert r116831 and r116839, which are breaking selfhost builds. 
llvm-svn: 116858
 2010-10-19 21:06:16 +00:00
Dan Gohman
f4c5fe73be Change AliasAnalysis and its clients to use uint64_t instead of unsigned 
for representing object sizes, for consistency with other parts of LLVM.

llvm-svn: 116831
 2010-10-19 18:00:02 +00:00
Owen Anderson
6c18d1aac0 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820
 2010-10-19 17:21:58 +00:00
Dan Gohman
f3702452c8 Fix BasicAA to pass TBAAInfo through to the chained analysis. 
llvm-svn: 116730
 2010-10-18 18:45:11 +00:00
Dan Gohman
02538ac4d3 Make BasicAliasAnalysis a normal AliasAnalysis implementation which 
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
 2010-10-18 18:04:47 +00:00
Owen Anderson
df7a4f2515 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Eli Friedman
ab3a128582 PR7959: Handle negative scales in GEPs correctly in BasicAA for non-64-bit 
targets.

llvm-svn: 114015
 2010-09-15 20:08:03 +00:00
Dan Gohman
41f14cf3e9 Remove the experimental AliasAnalysis::getDependency interface, which 
isn't a good level of abstraction for memdep. Instead, generalize
AliasAnalysis::alias and related interfaces with a new Location
class for describing a memory location. For now, this is the same
Pointer and Size as before, plus an additional field for a TBAA tag.

Also, introduce a fixed MD_tbaa metadata tag kind.

llvm-svn: 113858
 2010-09-14 21:25:10 +00:00
Dan Gohman
1c5be00ec7 Extend the getDependence query with support for PHI translation. 
llvm-svn: 113521
 2010-09-09 18:37:31 +00:00
Dan Gohman
64d842ec72 Add a new experimental generalized dependence query interface to 
AliasAnalysis, and some code for implementing the new query on top of
existing implementations by making standard alias and getModRefInfo
queries.

llvm-svn: 113329
 2010-09-08 01:32:20 +00:00
Chris Lattner
3decde9305 refix PR1143 by making basicaa analyze zexts of indices aggresively, 
which I broke with a recent patch.

llvm-svn: 111452
 2010-08-18 23:09:49 +00:00
Chris Lattner
26403acef7 GetLinearExpression is only called when TD is non-null, pass as 
a reference instead of pointer.

llvm-svn: 111445
 2010-08-18 22:52:09 +00:00
Chris Lattner
1b9c38796e rework GEP decomposition to make a new VariableGEPIndex struct instead of 
using a pair.  This tidies up the code a bit.  While setting things up, add
a (currently unused) field to keep track of how the value is extended.

llvm-svn: 111444
 2010-08-18 22:47:56 +00:00
Chris Lattner
9f7500f57b move gep decomposition out of ValueTracking into BasicAA. The form of 
decomposition that it is doing is very basicaa specific and is only used
by basicaa.

Now with less tree breakingness.

llvm-svn: 111433
 2010-08-18 22:07:29 +00:00
Daniel Dunbar
fbeeb130d8 Revert r111375, "move gep decomposition out of ValueTracking into BasicAA. The 
form of", it doesn't pass tests.

llvm-svn: 111385
 2010-08-18 18:43:08 +00:00
Chris Lattner
54fe883203 move gep decomposition out of ValueTracking into BasicAA. The form of 
decomposition that it is doing is very basicaa specific and is only used
by basicaa.

llvm-svn: 111375
 2010-08-18 18:22:17 +00:00
Owen Anderson
a7aed18624 Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Dan Gohman
5f1702e4fe Move all the logic for function attributes and call attributes out of the 
AliasAnalysis base class and into BasicAliasAnalyais. This avoids confusion
about where such logic is happening when there are other AliasAnalysis
implementations present.

Move the logic for translating two-callsite getModRefInfo queries into
other AliasAnalysis queries out of BasicAliasAnalysis and into the
AliasAnalysis base class, as it is useful for other AliasAnalysis
implementations.

llvm-svn: 110421
 2010-08-06 01:25:49 +00:00
Owen Anderson
c2107d2eaa Fix botched revert. 
llvm-svn: 110416
 2010-08-06 00:36:20 +00:00
Owen Anderson
bda59bd247 Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Dan Gohman
e0d5c458ec Fix 80-column violations. 
llvm-svn: 110401
 2010-08-05 23:48:14 +00:00
Owen Anderson
755aceb5d0 Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Dan Gohman
884dd752c3 Implement AccessesArguments checking in the two-callsite form 
of BasicAA::getModRefInfo. This allows BasicAA to say that two
memset calls to non-aliasing memory locations don't interfere.

llvm-svn: 110393
 2010-08-05 23:34:50 +00:00
Dan Gohman
26ef7c7ab7 Fix memdep's code for reasoning about dependences between two calls. A Ref 
response from getModRefInfo is not useful here. Instead, check for identical
calls only in the NoModRef case.

Reapply r110270, and strengthen it to compensate for the memdep changes.
When both calls are readonly, there is no dependence between them.

llvm-svn: 110382
 2010-08-05 22:09:15 +00:00
Dan Gohman
554b012f67 Revert r110270 for now. It appears to uncover a memdep bug. 
llvm-svn: 110293
 2010-08-05 00:43:10 +00:00
Dan Gohman
bd33dab633 The two-callsite form of AliasAnalysis::getModRefInfo is documented 
to return Ref if the left callsite only reads memory read or written
by the right callsite; fix BasicAliasAnalysis to implement this.

Add AliasAnalysisEvaluator support for testing the two-callsite
form of getModRefInfo.

llvm-svn: 110270
 2010-08-04 22:56:29 +00:00
Dan Gohman
5442c71f2e Thread const correctness through a bunch of AliasAnalysis interfaces and 
eliminate several const_casts.

Make CallSite implicitly convertible to ImmutableCallSite.

Rename the getModRefBehavior for intrinsic IDs to
getIntrinsicModRefBehavior to avoid overload ambiguity with CallSite,
which happens to be implicitly convertible to bool.

llvm-svn: 110155
 2010-08-03 21:48:53 +00:00
Dan Gohman
ad867b0aed The singular of "indices" is "index". 
llvm-svn: 110135
 2010-08-03 20:23:52 +00:00
Dan Gohman
852d6fc50c Delete an unused function. 
llvm-svn: 110134
 2010-08-03 20:20:56 +00:00
Dan Gohman
2a190081f6 Introduce a symbolic constant for ~0u for use with AliasAnalysis. 
llvm-svn: 110091
 2010-08-03 01:03:11 +00:00
Owen Anderson
ac4a1ede17 Add INSTANTIATE_AG_PASS, which combines RegisterPass<> with RegisterAnalysisGroup<> for pass registration. 
llvm-svn: 109058
 2010-07-21 23:07:00 +00:00
Owen Anderson
81781220d2 Speculatively revert r108813, in an attempt to get the self-host buildbots working again. I don't see why this patch 
would cause them to fail the way they are, but none of the other intervening patches seem likely either.

llvm-svn: 108818
 2010-07-20 08:26:15 +00:00
Owen Anderson
8dc129325f Reapply r108794, a fix for the failing test from last time. 
llvm-svn: 108813
 2010-07-20 06:52:42 +00:00
Daniel Dunbar
4a35d6f8cd Revert r108794, "Separate PassInfo into two classes: a constructor-free 
superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo).", it is
breaking teh everything.

llvm-svn: 108805
 2010-07-20 03:06:07 +00:00
Owen Anderson
e7c5fe586a Separate PassInfo into two classes: a constructor-free superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo). 
llvm-svn: 108794
 2010-07-20 01:19:58 +00:00
Dan Gohman
5b0a8a863f Minore code simplification. 
llvm-svn: 107777
 2010-07-07 14:30:04 +00:00
Dan Gohman
00ef93258a Remove interprocedural-basic-aa and associated code. The AliasAnalysis 
interface needs implementations to be consistent, so any code which
wants to support different semantics must use a different interface.
It's not currently worthwhile to add a new interface for this new
concept.

Document that AliasAnalysis doesn't support cross-function queries.

llvm-svn: 107776
 2010-07-07 14:27:09 +00:00
Dan Gohman
84f90a387d Remove context sensitivity concerns from interprocedural-basic-aa, and 
make it more aggressive in cases where both pointers are known to live
in the same function.

llvm-svn: 107420
 2010-07-01 20:08:40 +00:00
Dan Gohman
1be9e7c0b6 Fix whitespace style. 
llvm-svn: 107175
 2010-06-29 18:12:34 +00:00
Benjamin Kramer
80b7bc042a Use a more obvious way to avoid compiling functions which are only used when XDEBUG is enabled. 
llvm-svn: 107125
 2010-06-29 10:03:11 +00:00
Chandler Carruth
b1adb88d05 Jump through some silly hoops to make GCC accept that a function may not always 
be called.

llvm-svn: 107124
 2010-06-29 06:46:00 +00:00
Dan Gohman
0824affeff Add an Intraprocedural form of BasicAliasAnalysis, which aims to 
properly handles instructions and arguments defined in different
functions, or across recursive function iterations.

llvm-svn: 107109
 2010-06-29 00:50:39 +00:00
Dan Gohman
7c34ece501 Fix Value::stripPointerCasts and BasicAA to avoid trouble on 
code in unreachable blocks, which have have use-def cycles.
This fixes PR7514.

llvm-svn: 107071
 2010-06-28 21:16:52 +00:00
Gabor Greif
1abbde3103 use ArgOperand accessors 
llvm-svn: 106697
 2010-06-23 23:38:07 +00:00
Eric Christopher
7258dcd77f Revert 101465, it broke internal OpenGL testing. 
Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.

llvm-svn: 101579
 2010-04-16 23:37:20 +00:00
Gabor Greif
f375520f7b reapply r101434 
with a fix for self-hosting

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary

llvm-svn: 101465
 2010-04-16 15:33:14 +00:00
Gabor Greif
403e9694f9 back out r101423 and r101397, they break llvm-gcc self-host on darwin10 
llvm-svn: 101434
 2010-04-16 01:16:20 +00:00
Gabor Greif
33ae80bff7 reapply r101364, which has been backed out in r101368 
with a fix

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary

llvm-svn: 101397
 2010-04-15 20:51:13 +00:00
Gabor Greif
9fd00c7d25 back out r101364, as it trips the linux nightlybot on some clang C++ tests 
llvm-svn: 101368
 2010-04-15 12:46:56 +00:00
Gabor Greif
aafd209632 rotate CallInst operands, i.e. move callee to the back 
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary

llvm-svn: 101364
 2010-04-15 10:49:53 +00:00
Dan Gohman
cb45bd9cb3 Pointers to zero-sized objects don't point to overlapping objects. 
llvm-svn: 100789
 2010-04-08 18:11:50 +00:00
Duncan Sands
19d0b47b1f 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.

llvm-svn: 96344
 2010-02-16 11:11:14 +00:00
Chris Lattner
af362f014d add some new methods to adjust this pointers. Not used yet. 
llvm-svn: 94013
 2010-01-20 19:26:14 +00:00
Chris Lattner
29f82a1465 move DecomposeGEPExpression out into ValueTracking.cpp 
llvm-svn: 89956
 2009-11-26 17:12:50 +00:00
Chris Lattner
631c5b2cb9 teach GetLinearExpression to be a bit more aggressive. 
llvm-svn: 89955
 2009-11-26 17:00:01 +00:00
Chris Lattner
5c1cfc252c resolve a fixme. I haven't figured out how to write a testcase 
to exercise this though.

llvm-svn: 89954
 2009-11-26 16:52:32 +00:00
Chris Lattner
29bc8a91d3 Teach basicaa that x|c == x+c when the c bits of x are clear. This 
allows us to compile the example in readme.txt into:

LBB1_1:                                                     ## %bb
	movl	4(%rdx,%rax), %ecx
	movl	%ecx, %esi
	imull	(%rdx,%rax), %esi
	imull	%esi, %ecx
	movl	%esi, 8(%rdx,%rax)
	imull	%ecx, %esi
	movl	%ecx, 12(%rdx,%rax)
	movl	%esi, 16(%rdx,%rax)
	imull	%ecx, %esi
	movl	%esi, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

instead of:

LBB1_1: 
	movl	(%rdx,%rax), %ecx
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 8(%rdx,%rax)
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 12(%rdx,%rax)
	imull	8(%rdx,%rax), %ecx
	movl	%ecx, 16(%rdx,%rax)
	imull	12(%rdx,%rax), %ecx
	movl	%ecx, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

GCC (4.2) doesn't seem to be able to eliminate the loads in this 
testcase either, it generates:

L2:
	movl	(%rdx), %eax
	imull	4(%rdx), %eax
	movl	%eax, 8(%rdx)
	imull	4(%rdx), %eax
	movl	%eax, 12(%rdx)
	imull	8(%rdx), %eax
	movl	%eax, 16(%rdx)
	imull	12(%rdx), %eax
	movl	%eax, 20(%rdx)
	addl	$4, %ecx
	addq	$16, %rdx
	cmpl	$1002, %ecx
	jne	L2

llvm-svn: 89952
 2009-11-26 16:26:43 +00:00
Chris Lattner
12dacdd359 teach basicaa that A[i] != A[i+1]. 
llvm-svn: 89951
 2009-11-26 16:18:10 +00:00
Chris Lattner
7a5b56aca9 Change the other half of aliasGEP (which handles GEP differencing) to use DecomposeGEPExpression. This dramatically simplifies and shrinks the code by eliminating the horrible CheckGEPInstructions method, fixes a miscompilation (@test3) and makes the code more aggressive. In particular, we now handle the @test4 case, which is reduced from the SmallPtrSet constructor. Missing this caused us to emit a variable length memset instead of a fixed size one. 
llvm-svn: 89922
 2009-11-26 02:17:34 +00:00
Chris Lattner
5341c9679d Generalize DecomposeGEPExpression to exactly handle what Value::getUnderlyingObject does (when TD is around). This allows us to avoid calling DecomposeGEPExpression unless the ultimate alias check we care about passes, speedup up BasicAA a bit. 
llvm-svn: 89920
 2009-11-26 02:14:59 +00:00
Chris Lattner
8928899413 Implement a new DecomposeGEPExpression method, which decomposes a GEP into a list of scaled offsets. Use this to eliminate some previous ad-hoc code which was subtly broken (it assumed all Constant*'s were non-zero, but strange constant express could be zero). 
llvm-svn: 89915
 2009-11-26 02:13:03 +00:00
Chris Lattner
a99edbedd1 Use GEPOperator more pervasively to simplify code. 
llvm-svn: 89914
 2009-11-26 02:11:08 +00:00
Chris Lattner
214ef9a4ef fix comment, thanks all :) 
llvm-svn: 89666
 2009-11-23 17:07:35 +00:00
Chris Lattner
1e7b37ebba use the new isNoAlias method to simplify some code, only do an escaping check if 
we have a non-constant pointer.  Constant pointers can't be local.

llvm-svn: 89665
 2009-11-23 16:46:41 +00:00
Chris Lattner
98e25326a0 whitespace cleanup, tidying 
llvm-svn: 89664
 2009-11-23 16:45:27 +00:00
Chris Lattner
84ed59abcf speed up BasicAA a bit by implementing a long-standing TODO. 
llvm-svn: 89663
 2009-11-23 16:44:43 +00:00
Chris Lattner
a13c9d1a5e add fixme for dubious code. Duncan, what do you think? 
llvm-svn: 89602
 2009-11-22 16:16:48 +00:00
Chris Lattner
db1e9f1290 remove a silly condition that doesn't make a lot of sense anymore. 
llvm-svn: 89601
 2009-11-22 16:15:59 +00:00
Chris Lattner
d6a49ad25a reduce indentation, no functionality change. 
llvm-svn: 89600
 2009-11-22 16:05:05 +00:00
Chris Lattner
88874ec60a Remove the AliasAnalysis::getMustAliases method, which is dead. 
The hasNoModRefInfoForCalls isn't worth it as a filter because 
basicaa provides m/r info and everything chains to it, so remove
it.

llvm-svn: 89599
 2009-11-22 16:01:44 +00:00
Dan Gohman
94e617627d Extend CaptureTracking to indicate when a value is never stored, even 
if it is not ultimately captured. Teach BasicAliasAnalysis that a 
local object address which does not escape and is never stored does
not alias with a value resulting from a load.

llvm-svn: 89398
 2009-11-19 21:57:48 +00:00
Nick Lewycky
c53e2ecf02 Teach BasicAA that a constant expression can't alias memory provably not 
allocated until runtime (such as an alloca). Patch by Hans Wennborg!

llvm-svn: 88760
 2009-11-14 06:15:14 +00:00
Dan Gohman
ccb4584edd Default-addressspace null pointers don't alias anything. This allows 
GVN to be more aggressive. Patch by Hans Wennborg! (with a comment added by me)

llvm-svn: 86582
 2009-11-09 19:29:11 +00:00
Chris Lattner
46b5c642b9 remove a bunch of extraneous LLVMContext arguments 
from various APIs, addressing PR5325.

llvm-svn: 86231
 2009-11-06 04:27:31 +00:00
Victor Hernandez
f390e04a47 Rename MallocFreeHelper as MemoryBuiltins 
llvm-svn: 85286
 2009-10-27 20:05:49 +00:00
Victor Hernandez
762195bd01 Rename MallocHelper as MallocFreeHelper, since it now also identifies calls to free() 
llvm-svn: 85181
 2009-10-26 23:58:56 +00:00
Dan Gohman
3b7ba5f35b Teach BasicAA how to analyze Select instructions, and make it more 
aggressive on PHI instructions.

llvm-svn: 85158
 2009-10-26 21:55:43 +00:00
Nick Lewycky
974e12b2d3 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.

llvm-svn: 85043
 2009-10-25 06:57:41 +00:00
Nick Lewycky
02d5f77d26 Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042
 2009-10-25 06:33:48 +00:00
Victor Hernandez
8acf2956b8 Remove AllocationInst. Since MallocInst went away, AllocaInst is the only subclass of AllocationInst, so it no longer is necessary. 
llvm-svn: 84969
 2009-10-23 21:09:37 +00:00
Chris Lattner
b2647b9e67 inline isGEP away. 
llvm-svn: 84373
 2009-10-17 23:48:54 +00:00
Evan Cheng
8ec25937f1 When checking aliases between phi sources and V2, we know the sources are not themselves phi nodes. However, V2 may be. Call aliasCheck with V2 first to potentially eliminate a std::swap call. 
llvm-svn: 84226
 2009-10-16 00:33:09 +00:00
Nick Lewycky
d708a4908c Add missing break statements! Thanks to Duncan Sands for pointing this out! 
llvm-svn: 84191
 2009-10-15 18:48:58 +00:00
Nick Lewycky
9cec2380f2 Teach basicaa about memcpy/memmove/memset. The length argument can be used to 
improve alias results if constant, and the source pointer can't be modified.

llvm-svn: 84175
 2009-10-15 07:11:24 +00:00
Nick Lewycky
d7216cf74c Teach BasicAA to use the size parameter of the memory use marker intrinsics. 
llvm-svn: 84174
 2009-10-15 06:12:11 +00:00
Nick Lewycky
fcb27ad54c Take advantage of TargetData when available; we know that the atomic intrinsics 
only dereference the element they point to directly with no pointer arithmetic.

llvm-svn: 84159
 2009-10-15 00:36:35 +00:00
Evan Cheng
b3ccb6498c Clear VisitedPHIs after use. 
llvm-svn: 84080
 2009-10-14 06:46:26 +00:00
Evan Cheng
c1eed9d120 Another BasicAA fix. If a value does not alias a GEP's base pointer, then it 
cannot alias the GEP. GEP pointer alias rule states this clearly:
A pointer value formed from a getelementptr instruction is associated with the
addresses associated with the first operand of the getelementptr.

llvm-svn: 84079
 2009-10-14 06:41:49 +00:00
Evan Cheng
f92f5557ee More code clean up based on patch feedback. 
llvm-svn: 84074
 2009-10-14 05:22:03 +00:00
Evan Cheng
31565b3e9f Change VisitedPHIs into an instance variable that's freed by each alias() call. 
llvm-svn: 84072
 2009-10-14 05:05:02 +00:00
Evan Cheng
c10e88db22 Teach basic AA about PHI nodes. If all operands of a phi NoAlias another value than it's safe to declare the PHI NoAlias the value. Ditto for MustAlias. 
llvm-svn: 84038
 2009-10-13 22:02:20 +00:00
Evan Cheng
f1f3dd3c3c Refactor some code. No functionality changes. 
llvm-svn: 84000
 2009-10-13 18:42:04 +00:00
Nick Lewycky
e2782c7614 Teach BasicAA a little something about the atomic intrinsics: they can only 
modify through the pointer they're given.

llvm-svn: 83959
 2009-10-13 07:48:38 +00:00
Victor Hernandez
537d8d99be Enhance analysis passes so that they apply the same analysis to malloc calls as to MallocInst. 
Reviewed by Eli Friedman.

llvm-svn: 82281
 2009-09-18 21:34:51 +00:00
Dan Gohman
bc1d841a63 Use stripPointerCasts instead of doing the same manually. 
llvm-svn: 80267
 2009-08-27 18:02:03 +00:00
Owen Anderson
55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Owen Anderson
5a1acd9912 Move a few more APIs back to 2.5 forms. The only remaining ones left to change back are 
metadata related, which I'm waiting on to avoid conflicting with Devang.

llvm-svn: 77721
 2009-07-31 20:28:14 +00:00
Owen Anderson
487375e9a2 Move ConstantExpr to 2.5 API. 
llvm-svn: 77494
 2009-07-29 18:55:55 +00:00
Dan Gohman
43d19d61d4 Make AliasAnalysis and related classes use 
getAnalysisIfAvailable<TargetData>().

llvm-svn: 77028
 2009-07-25 00:48:42 +00:00