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2685 Commits

Author SHA1 Message Date
Dan Gohman
770613e3be Fix IVUsers to avoid assuming that the loop has a unique backedge. 
llvm-svn: 86161
 2009-11-05 19:41:37 +00:00
Dan Gohman
6f6862e558 Factor out the predicate code for loopsimplify form exit blocks into 
a separate helper function.

llvm-svn: 86159
 2009-11-05 19:21:41 +00:00
Victor Hernandez
21ec158c23 Update CreateMalloc so that its callers specify the size to allocate: 
MallocInst-autoupgrade users use non-TargetData-computed allocation sizes.
Optimization uses use TargetData to compute the allocation size.

Now that malloc calls can have constant sizes, update isArrayMallocHelper() to use TargetData to determine the size of the malloced type and the size of malloced arrays.
Extend getMallocType() to support malloc calls that have non-bitcast uses.

Update OptimizeGlobalAddressOfMalloc() to optimize malloc calls that have non-bitcast uses.  The bitcast use of a malloc call has to be treated specially here because the uses of the bitcast need to be replaced and the bitcast needs to be erased (just like the malloc call) for OptimizeGlobalAddressOfMalloc() to work correctly.

Update PerformHeapAllocSRoA() to optimize malloc calls that have non-bitcast uses.  The bitcast use of the malloc is not handled specially here because ReplaceUsesOfMallocWithGlobal replaces through the bitcast use.

Update OptimizeOnceStoredGlobal() to not care about the malloc calls' bitcast use.

Update all globalopt malloc tests to not rely on autoupgraded-MallocInsts, but instead use explicit malloc calls with correct allocation sizes.

llvm-svn: 86077
 2009-11-05 00:03:03 +00:00
Devang Patel
c69c29bc4b While calculating original type size for a derived type, handle type variants encoded as DIDerivedType appropriately. 
This improves bitfield support.

llvm-svn: 86073
 2009-11-04 23:48:00 +00:00
Victor Hernandez
628b65ea6e Changes requested (avoid getFunction(), avoid Type creation via isVoidTy(), and avoid redundant isFreeCall cases) in feedback to r85176 
llvm-svn: 85936
 2009-11-03 20:39:35 +00:00
Victor Hernandez
046375ac3f Changes (* location in pointer variables, avoiding include, and using APInt::getLimitedValue) based on feedback to r85814 
llvm-svn: 85933
 2009-11-03 20:02:35 +00:00
Chris Lattner
7585c1f162 remove unneeded checks of isFreeCall 
llvm-svn: 85866
 2009-11-03 05:35:19 +00:00
Chris Lattner
cbd903cd12 remove a check of isFreeCall: the argument to free is already nocapture so the generic call code works fine. 
llvm-svn: 85865
 2009-11-03 05:34:51 +00:00
Victor Hernandez
1d2fd19df6 Set bit instead of calling pow() to compute 2 << n 
llvm-svn: 85814
 2009-11-02 18:51:28 +00:00
Edward O'Callaghan
e91c6a1a44 Fix for warning seen on DF-BSD, Victor, please fix this to use a shift instead of pow() 
llvm-svn: 85781
 2009-11-02 03:14:31 +00:00
Edward O'Callaghan
64a2e8f6a5 Apply fix for PR5135, Credit to Andreas Neustifter. 
llvm-svn: 85779
 2009-11-02 02:55:39 +00:00
Duncan Sands
fd3669403c Add a missing closing parenthesis, and tweak to fit in 80 
columns.

llvm-svn: 85732
 2009-11-01 19:12:43 +00:00
Chris Lattner
11944e39d4 add a comment about why we don't allow inlining indbr. 
llvm-svn: 85724
 2009-11-01 18:16:30 +00:00
Douglas Gregor
16c6819959 Reverting 85714, 85715, 85716, which are breaking the build 
llvm-svn: 85717
 2009-11-01 16:42:53 +00:00
Dan Gohman
58714b62b6 Add a function to Passes.h to allow clients to create instances 
of the ScalarEvolution pass without needing to #include ScalarEvolution.h.

llvm-svn: 85716
 2009-11-01 15:28:36 +00:00
Dan Gohman
9cdf5185a3 Don't #include Pass.h from CallGraph.h. 
llvm-svn: 85715
 2009-11-01 15:23:35 +00:00
Chris Lattner
7a60ef5e23 pull check for return inst out of loop, never inline a callee that contains 
an indirectbr.

llvm-svn: 85702
 2009-11-01 03:07:53 +00:00
Dan Gohman
0079f87732 Rename forgetLoopBackedgeTakenCount to forgetLoop, because it 
clears out more information than just the stored backedge taken count.

llvm-svn: 85664
 2009-10-31 15:04:55 +00:00
Dan Gohman
7d09ca3e5b Make ScalarEvolutionAliasAnalysis slightly more aggressive, by making an 
underlying alias call even for non-identified-object values.

llvm-svn: 85656
 2009-10-31 14:32:25 +00:00
Devang Patel
b16ace1014 If string field is empty then return NULL. 
llvm-svn: 85630
 2009-10-30 22:52:47 +00:00
Devang Patel
2b9d1ade65 If a type is derived from a derived type then calculate size appropriately. 
llvm-svn: 85619
 2009-10-30 22:09:30 +00:00
Devang Patel
093d35bd8a First bitcase use may not lead to a dbg.declare intrinsic. Iterate uses until one find's dbg.declare intrinsic. 
Patch by Sunae Seo.

llvm-svn: 85518
 2009-10-29 18:20:34 +00:00
Zhongxing Xu
93af2d027f fix 80-col. 
llvm-svn: 85480
 2009-10-29 04:41:24 +00:00
Zhongxing Xu
45d8013f73 Explicitly convert to double to suppress Visual C++ 2008 build error C2668 pow is ambiguous call to overloaded function 
llvm-svn: 85478
 2009-10-29 03:43:06 +00:00
Victor Hernandez
917cf94b22 Extend getMallocArraySize() to determine the array size if the malloc argument is: 
ArraySize * ElementSize
ElementSize * ArraySize
ArraySize << log2(ElementSize)
ElementSize << log2(ArraySize)

Refactor isArrayMallocHelper and delete isSafeToGetMallocArraySize, so that there is only 1 copy of the malloc array determining logic.
Update users of getMallocArraySize() to not bother calling isArrayMalloc() as well.

llvm-svn: 85421
 2009-10-28 20:18:55 +00:00
Owen Anderson
cfb2c9edeb Treat lifetime begin/end markers as allocations/frees respectively for the 
purposes for GVN/DSE.

llvm-svn: 85383
 2009-10-28 07:05:35 +00:00
Owen Anderson
a2584a4c64 Be more careful about invariance reasoning on "store" queries. Stores still need 
to depend on Ref and ModRef calls within the invariant region.

llvm-svn: 85380
 2009-10-28 06:30:52 +00:00
Owen Anderson
6cf32f04df Add trivial support for the invariance intrinsics to memdep. This logic is 
purely local for now.

llvm-svn: 85378
 2009-10-28 06:18:42 +00:00
Chris Lattner
2bc8002f4c rename indbr -> indirectbr to appease the residents of #llvm. 
llvm-svn: 85351
 2009-10-28 00:19:10 +00:00
Chris Lattner
5bd76ffebb make the build build. 
llvm-svn: 85319
 2009-10-27 21:43:39 +00:00
Chris Lattner
665b9e2a3c Random updates to passes for indbr, I need blockaddress before I can do much more. 
llvm-svn: 85316
 2009-10-27 21:27:42 +00:00
Victor Hernandez
0f662a7acf Rename MallocFreeHelper as MemoryBuiltins 
llvm-svn: 85286
 2009-10-27 20:05:49 +00:00
Victor Hernandez
6c86b93663 Rename MallocHelper as MallocFreeHelper, since it now also identifies calls to free() 
llvm-svn: 85181
 2009-10-26 23:58:56 +00:00
Victor Hernandez
673c036bc7 Remove FreeInst. 
Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.

llvm-svn: 85176
 2009-10-26 23:43:48 +00:00
Dan Gohman
c8468855a7 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
Devang Patel
9eb437047b Add support to encode type info using llvm::Constant. 
Patch by Talin!

llvm-svn: 85126
 2009-10-26 16:54:35 +00:00
Nick Lewycky
2b8400628d 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
711c726c97 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
Chris Lattner
d8db8b6952 Teach FoldBitCast to be able to handle bitcasts from (e.g.) i128 -> <4 x float>. 
This allows us to simplify this:
union vec2d {
    double e[2];
    double v __attribute__((vector_size(16)));
};
typedef union vec2d vec2d;

static vec2d a={{1,2}}, b={{3,4}};
    
vec2d foo () {
    return (vec2d){ .v = a.v + b.v * (vec2d){{5,5}}.v };
}

down to:

define %0 @foo() nounwind ssp {
entry:
  %mrv5 = insertvalue %0 undef, double 1.600000e+01, 0 ; <%0> [#uses=1]
  %mrv6 = insertvalue %0 %mrv5, double 2.200000e+01, 1 ; <%0> [#uses=1]
  ret %0 %mrv6
}

instead of:

define %0 @foo() nounwind ssp {
entry:
  %mrv5 = insertvalue %0 undef, double extractelement (<2 x double> fadd (<2 x double> fmul (<2 x double> bitcast (<1 x i128> <i128 85174437667405312423031577302488055808> to <2 x double>), <2 x double> <double 3.000000e+00, double 4.000000e+00>), <2 x double> <double 1.000000e+00, double 2.000000e+00>), i32 0), 0 ; <%0> [#uses=1]
  %mrv6 = insertvalue %0 %mrv5, double extractelement (<2 x double> fadd (<2 x double> fmul (<2 x double> bitcast (<1 x i128> <i128 85174437667405312423031577302488055808> to <2 x double>), <2 x double> <double 3.000000e+00, double 4.000000e+00>), <2 x double> <double 1.000000e+00, double 2.000000e+00>), i32 1), 1 ; <%0> [#uses=1]
  ret %0 %mrv6
}

llvm-svn: 85040
 2009-10-25 06:15:37 +00:00
Chris Lattner
d80c1f61d2 move FoldBitCast earlier in the file, and use it instead of 
ConstantExpr::getBitCast in various places.

llvm-svn: 85039
 2009-10-25 06:08:26 +00:00
Chris Lattner
f6cb8d6b90 refactor FoldBitCast to reduce nesting and to always return a constantexpr 
instead of returning null on failure.  No functionality change.

llvm-svn: 85038
 2009-10-25 06:02:57 +00:00
Chris Lattner
5f456758c6 various cleanups suggested by Duncan 
llvm-svn: 84993
 2009-10-24 05:27:19 +00:00
Chris Lattner
9a1f5c9f90 fix PR5287, a serious regression from my previous patches. Thanks to 
Duncan for the nice tiny testcase.

llvm-svn: 84992
 2009-10-24 05:22:15 +00:00
Victor Hernandez
e8998896f5 Auto-upgrade free instructions to calls to the builtin free function. 
Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.

llvm-svn: 84987
 2009-10-24 04:23:03 +00:00
Victor Hernandez
8428eb5720 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
4874f5bce5 teach libanalysis to simplify vector loads with bitcast sources. This 
implements something out of Target/README.txt producing:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	LCPI1_0, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

instead of:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	_b, %xmm0
	mulpd	LCPI1_0, %xmm0
	addpd	_a, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

llvm-svn: 84942
 2009-10-23 06:57:37 +00:00
Chris Lattner
2ee1f0f0b5 enhance FoldReinterpretLoadFromConstPtr to handle loads of up to 32 
bytes (i256).

llvm-svn: 84941
 2009-10-23 06:50:36 +00:00
Chris Lattner
b1d2706a4c teach libanalysis to fold int and fp loads from almost arbitrary 
non-type-safe constant initializers.  This sort of thing happens
quite a bit for 4-byte loads out of string constants, unions, 
bitfields, and an interesting endianness check from sqlite, which
is something like this:

const int sqlite3one = 1;
# define SQLITE_BIGENDIAN    (*(char *)(&sqlite3one)==0)
# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)

all of these macros now constant fold away.

This implements PR3152 and is based on a patch started by Eli, but heavily
modified and extended.

llvm-svn: 84936
 2009-10-23 06:23:49 +00:00
Chris Lattner
cd80b1711b move another load optimization from instcombine -> libanalysis. 
llvm-svn: 84841
 2009-10-22 06:44:07 +00:00
Chris Lattner
3fb4c19b7d move 'loading i32 from string' optimization from instcombine 
to libanalysis.  Instcombine shrinking... does this even 
make sense???

llvm-svn: 84840
 2009-10-22 06:38:35 +00:00
Chris Lattner
2c8c8533b1 Move some constant folding logic for loads out of instcombine into 
Analysis/ConstantFolding.cpp.  This doesn't change the behavior of
instcombine but makes other clients of ConstantFoldInstruction
able to handle loads.  This was partially extracted from Eli's patch
in PR3152.

llvm-svn: 84836
 2009-10-22 06:25:11 +00:00
Dan Gohman
bc58eb97fe Fix another place that calls Loop::contains a lot to construct a sorted 
container of the blocks and do efficient lookups. This makes
isLoopSimplifyForm much faster on large loops, fixing a significant
compile-time issue in builds with assertions enabled.

llvm-svn: 84673
 2009-10-20 20:41:13 +00:00
Chris Lattner
5b8e288c5f fix the other issue with ID's, hopefully really fixing the linux build. 
llvm-svn: 84403
 2009-10-18 04:58:34 +00:00
Chris Lattner
a1aaf47423 fix some problems with ID definitions, which will hopefully fix the build bots. 
llvm-svn: 84399
 2009-10-18 04:27:14 +00:00
Chris Lattner
8851d6cf9c add function passes for printing various dominator datastructures 
accessible through opt.  Patch by Tobias Grosser!

llvm-svn: 84397
 2009-10-18 04:10:40 +00:00
Chris Lattner
f202995415 make DOTGraphTraits public, patch by Tobias Grosser! 
llvm-svn: 84396
 2009-10-18 04:09:11 +00:00
Chris Lattner
a72ccc6fee inline isGEP away. 
llvm-svn: 84373
 2009-10-17 23:48:54 +00:00
Victor Hernandez
a25a2890fa Remove MallocInst from LLVM Instructions. 
llvm-svn: 84299
 2009-10-17 01:18:07 +00:00
Victor Hernandez
6d11519b1f Invert isSafeToGetMallocArraySize check because we return NULL when we don't know the size. 
Thanks to Duncan Sands for noticing this bug.

llvm-svn: 84261
 2009-10-16 18:08:17 +00:00
Evan Cheng
54b34ff68d 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
Victor Hernandez
603a11de4e Fix bug where array malloc with unexpected computation of the size argument resulted in MallocHelper 
identifying the malloc as a non-array malloc.  This broke GlobalOpt's optimization of stores of mallocs 
to global variables.

The fix is to classify malloc's into 3 categories:
1. non-array mallocs
2. array mallocs whose array size can be determined
3. mallocs that cannot be determined to be of type 1 or 2 and cannot be optimized

getMallocArraySize() returns NULL for category 3, and all users of this function must avoid their 
malloc optimization if this function returns NULL.

Eventually, currently unexpected codegen for computing the malloc's size argument will be supported in
isArrayMalloc() and getMallocArraySize(), extending malloc optimizations to those examples.

llvm-svn: 84199
 2009-10-15 20:14:52 +00:00
Nick Lewycky
7ec7f1ce0f 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
4ba7b77812 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
14a06f7051 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
a12f6e8f78 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
37a7a18748 Clear VisitedPHIs after use. 
llvm-svn: 84080
 2009-10-14 06:46:26 +00:00
Evan Cheng
907fd9c3fb 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
c1056d9269 More code clean up based on patch feedback. 
llvm-svn: 84074
 2009-10-14 05:22:03 +00:00
Evan Cheng
efc0f806a4 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
3130aba687 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
Dan Gohman
c1e210fa10 Compute a full cost value even when a setjmp call is found. 
llvm-svn: 84015
 2009-10-13 20:10:10 +00:00
Dan Gohman
665e336185 Split code not specific to Function inlining out into a separate class, 
named CodeMetrics. Move it to be a non-nested class. Rename RegionInfo
back to FunctionInfo.

llvm-svn: 84013
 2009-10-13 19:58:07 +00:00
Benjamin Kramer
679377c816 Update the other CMake file. 
llvm-svn: 84003
 2009-10-13 18:50:54 +00:00
Evan Cheng
84c5224fa2 Refactor some code. No functionality changes. 
llvm-svn: 84000
 2009-10-13 18:42:04 +00:00
Dan Gohman
18cdd7ef1b Move the InlineCost code from Transforms/Utils to Analysis. 
llvm-svn: 83998
 2009-10-13 18:30:07 +00:00
Devang Patel
ee9d2f0cc0 "there is not any instruction with attached debug info in this module" does not mean "there is no debug info in this module". :) 
llvm-svn: 83984
 2009-10-13 17:35:35 +00:00
Nick Lewycky
72f185f281 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
21280bc3af Memory dependence analysis was incorrectly stopping to scan for stores to a pointer at bitcast uses of a malloc call. 
It should continue scanning until the malloc call, and this patch fixes that.

llvm-svn: 83931
 2009-10-13 01:42:53 +00:00
Dan Gohman
731afb3b6e Revert r83606 and add comments explaining why it isn't safe. 
llvm-svn: 83649
 2009-10-09 16:35:06 +00:00
Dan Gohman
e81a040ce7 Preserve HasNSW and HasNUW when constructing SCEVs for Add and Mul 
instructions.

llvm-svn: 83606
 2009-10-09 00:41:22 +00:00
Dan Gohman
4cdd530887 Add the ability to track HasNSW and HasNUW on more kinds of SCEV expressions. 
llvm-svn: 83601
 2009-10-09 00:10:36 +00:00
Douglas Gregor
57f2c22857 Update CMake build yet again after a source file was removed 
llvm-svn: 83575
 2009-10-08 21:24:34 +00:00
Bill Wendling
d47d348cdf It's possible for a global variable to be optimized out of a metadata object. So 
we should allow a "null" with this dyn_cast.

llvm-svn: 83573
 2009-10-08 20:52:51 +00:00
Chris Lattner
41b5fd5218 remove LoopVR pass. According to Nick: 
"LoopVR's logic was copied into ScalarEvolution::getUnsignedRange and 
::getSignedRange. Please delete LoopVR."

llvm-svn: 83531
 2009-10-08 06:42:44 +00:00
Devang Patel
a7456a1335 Extract subprogram and compile unit information from the debug info attached to an instruction. 
llvm-svn: 83491
 2009-10-07 22:04:08 +00:00
Torok Edwin
6a66b4edd1 Add PR to this FIXME, looks like I didn't commit this change after all. 
llvm-svn: 83457
 2009-10-07 09:22:55 +00:00
Duncan Sands
2400ad7236 Introduce and use convenience methods for getting pointer types 
where the element is of a basic builtin type.  For example, to get
an i8* use getInt8PtrTy.

llvm-svn: 83379
 2009-10-06 15:40:36 +00:00
Evan Phoenix
1b803795c7 Extend ConstantFolding to understand signed overflow variants 
llvm-svn: 83338
 2009-10-05 22:53:52 +00:00
Torok Edwin
1a53fd9356 Don't treat malloc calls with non-matching prototype as malloc. 
Fixes second part of PR5130, miscompilation in FreeBSD kernel, where malloc takes 3 params,
and *does* initialize memory.

llvm-svn: 83324
 2009-10-05 21:15:43 +00:00
Dan Gohman
176e47a413 Remove an unnnecessary LLVMContext argument in 
ConstantFoldLoadThroughGEPConstantExpr.

llvm-svn: 83311
 2009-10-05 16:36:26 +00:00
Chris Lattner
7d19c8841c teach the optimizer how to constant fold uadd/usub intrinsics. 
llvm-svn: 83295
 2009-10-05 05:26:04 +00:00
Chris Lattner
8b72a24a35 simplify this code a bunch. 
llvm-svn: 83294
 2009-10-05 05:06:24 +00:00
Chris Lattner
24a77e2ade code simplifications. 
llvm-svn: 83292
 2009-10-05 05:00:35 +00:00
Mike Stump
532ed49e39 Expand api out in the usual inserter way, though, I do have a 
question, can we get rid of the BasicBlock versions of all inserters
and use Head == 0 to indicate the old case when GetInsertBlock == 0?

llvm-svn: 83216
 2009-10-01 22:08:58 +00:00
Devang Patel
4f1147e386 Add another MDNode into DebugLocTuple. This will be used to keep track of inlined functions. 
llvm-svn: 83190
 2009-10-01 01:15:28 +00:00
Devang Patel
cb516787d0 Add isFOO() helpers. Fix getDirectory() and getFilename() for DIScope. 
llvm-svn: 83180
 2009-09-30 22:34:41 +00:00
Mike Stump
a3bce35a07 Add a way for a frontend to generate more complex dwarf location 
information.  This allows arbitrary code involving DW_OP_plus_uconst
and DW_OP_deref.  The scheme allows for easy extention to include,
any, or all of the DW_OP_ opcodes.  I thought about just exposing all
of them, but, wasn't sure if people wanted the dwarf opcodes exposed
in the api.  Is that a layering violation?

With this scheme, the entire existing block scheme used by llvm-gcc
can be switched over to the new scheme.  I think that would be
cleaner, as then the compiler specific bits are not present in llvm
proper.  Before the old code can be yanked however, similar code in
clang would have to be removed.

Next up, more testing.

llvm-svn: 83120
 2009-09-30 00:08:22 +00:00
Devang Patel
e5be8e79df Remove std::string uses from DebugInfo interface. 
llvm-svn: 83083
 2009-09-29 18:40:58 +00:00
Dan Gohman
c3081dd9eb When extending the operands of an addrec, iterate through all 
the operands, rather than trying to partition them into a start
and a step. This handles non-affine add recurrences correctly.

llvm-svn: 83011
 2009-09-28 21:01:47 +00:00
Dan Gohman
bfa2d75c49 Create a README.txt for lib/Analysis, and add an entry. 
llvm-svn: 83001
 2009-09-28 18:38:53 +00:00