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Author SHA1 Message Date
Chris Lattner
c5a5cf26fd speed up -gvn 3.4% on the testcase in PR7023 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-06 01:26:29 +00:00
Chris Lattner
adc799112d pull a simple method out of LICM into a new 
Loop::hasLoopInvariantOperands method. Remove
a useless and confusing Loop::isLoopInvariant(Instruction)
method, which didn't do what you thought it did.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113133 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-06 01:05:37 +00:00
Chris Lattner
e971131695 fix PR8063, a crash in globalopt in the malloc analysis code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113109 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-05 17:20:46 +00:00
Chris Lattner
ab2cee6d51 dead method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113077 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-04 18:19:16 +00:00
Chris Lattner
17aa68055b zap dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113073 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-04 18:12:00 +00:00
Dan Gohman
46ffb231c6 Disable the asserts that check that normalization is perfectly 
invertible. ScalarEvolution's folding routines don't always succeed
in canonicalizing equal expressions to a single canonical form, and
this can cause these asserts to fail, even though there's no actual
correctness problem. This fixes PR8066.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113021 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-03 22:12:56 +00:00
Owen Anderson
1593dd6779 Add support for simplifying a load from a computed value to a load from a global when it 
is provable that they're equivalent.  This fixes PR4855.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112994 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-03 19:08:37 +00:00
Chris Lattner
831c8ec016 stop forcing a noop AssemblyAnnotationWriter to silence #uses 
comments, these don't happen anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112901 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 23:03:10 +00:00
Owen Anderson
4caef6001d Remove incorrect and poorly tested code for trying to reason about values on default edges of 
switches.  Just return the conservatively correct answer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112876 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 22:16:52 +00:00
Owen Anderson
66048c2169 Fix a bug in LazyValueInfo that CorrelatedValuePropagation exposed: In the LVI lattice, undef and the full set ConstantRange should not 
be treated as equivalent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112843 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 18:23:58 +00:00
Dan Gohman
191bd64a39 Revert 112442 and 112440 until the compile time problems introduced 
by 112440 are resolved.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112692 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 01:45:53 +00:00
Dan Gohman
3f19c091bf Reapply r112432, now that the real problem is addressed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112667 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 22:53:17 +00:00
Dan Gohman
6a0c125ed5 Reapply r112433, now that the real problem is addressed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112666 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 22:52:12 +00:00
Dan Gohman
90b5f25e8d Revert r110916. This patch is buggy because the code inside the 
inner loop doesn't update all the variables in the outer loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 22:50:31 +00:00
Dan Gohman
26125c65b9 Revert r112432. It appears to be exposing a problem in the emacs build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112638 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 20:58:44 +00:00
Dan Gohman
f3bba4c1ae Speculatively revert r112433. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112608 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 17:56:47 +00:00
Owen Anderson
392953262e It is possible to try to merge a not-constant with a constantrage, when dealing with ptrtoint ConstantExpr's. 
Unfortunately, the only testcase I have for this is huge and doesn't reduce well because the error is
sensitive to iteration-order issues, since the problem only occurs when merging values in a particular order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112489 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 17:03:45 +00:00
Benjamin Kramer
033927408e Don't print two "0x" prefixes. Use a raw_ostream overload instead of llvm::format. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112479 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 14:46:53 +00:00
Chris Lattner
cb7f653422 two changes: 1) make AliasSet hold the list of call sites with an 
assertingvh so we get a violent explosion if the pointer dangles.

2) Fix AliasSetTracker::deleteValue to remove call sites with
   by-pointer comparisons instead of by-alias queries.  Using
   findAliasSetForCallSite can cause alias sets to get merged
   when they shouldn't, and can also miss alias sets when the
   call is readonly.

#2 fixes PR6889, which only repros with a .c file :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 18:42:23 +00:00
Dan Gohman
eaa40ff74e Make IVUsers iterative instead of recursive. 
This has the side effect of reversing the order of most of
IVUser's results.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112442 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 16:40:03 +00:00
Dan Gohman
d578a40853 Restructure the {A,+,B}<L> * {C,+,D}<L> folding so that it folds 
all applicable addrecs before recursing on getMulExpr, instead of
recursing on getMulExpr for each one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 15:16:58 +00:00
Dan Gohman
b8fc62bc58 Batch up subtracts along with adds, when analyzing long chains of 
operations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112432 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 15:10:06 +00:00
Dan Gohman
c6a8e99fb3 Micro-optimize GroupByComplexity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112431 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 15:07:13 +00:00
Dan Gohman
0f32ae3aa7 Hold AddRec->getLoop() in a variable, to make the Mul code more consistent 
with the Add code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112430 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 14:55:19 +00:00
Dan Gohman
30cbc860f8 Rename a variable, for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112429 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 14:53:34 +00:00
Dan Gohman
7e1fee7ece Use iterators instead of indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112428 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 14:52:02 +00:00
Chris Lattner
fedac7d9b0 when merging two alias sets, the result set is volatile if either 
of the sets is volatile.  We were dropping the volatile bit of the
merged in set, leading (luckily) to assertions in cases like 
PR7535.  I cannot produce a testcase that repros with opt, but this
is obviously correct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 04:14:47 +00:00
Chris Lattner
9476d746d6 more cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 04:13:43 +00:00
Chris Lattner
6e1f51099d clean this up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 04:06:55 +00:00
Dan Gohman
5bb307d5c8 Fix an index calculation thinko. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112337 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 00:39:27 +00:00
Owen Anderson
ee61fcf98b Improve the precision of getConstant(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 23:29:38 +00:00
Dan Gohman
68ff776661 When merging adjacent operands, scan ahead and merge all equal 
adjacent operands at once, instead of just two at a time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112299 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 21:39:59 +00:00
Dan Gohman
32527156b3 Make the {A,+,B}<L> + {C,+,D}<L> --> Other + {A+C,+,B+D}<L> 
transformation collect all the addrecs with the same loop
add combine them at once rather than starting everything over
at the first chance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112290 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 20:45:56 +00:00
Dan Gohman
e8ac3f3be4 Switch ScalarEvolution's main Value*->SCEV* map from std::map 
to DenseMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112281 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 18:55:03 +00:00
Owen Anderson
660cab32fe Use LVI to eliminate conditional branches where we've tested a related condition previously. Update tests for this change. 
This fixes PR5652.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 17:12:29 +00:00
Dan Gohman
67ef74e0e5 Optimize SCEVComplexityCompare. Use a 3-way return instead of a 2-way 
return to avoid needing two calls to test for equivalence, and sort
addrecs by their degree before examining their operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 15:26:01 +00:00
Owen Anderson
6cd2075549 In the default address space, any GEP off of null results in a trap value if you try to load it. Thus, 
any load in the default address space that completes implies that the base value that it GEP'd from
was not null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112015 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-25 01:16:47 +00:00
Owen Anderson
7bef92ac7a NULL loads are only invalid in the default address space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111972 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-24 22:00:55 +00:00
Owen Anderson
dae90c6afb Add support for inferring values for the default cases of switches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111971 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-24 21:59:42 +00:00
Owen Anderson
c8ef750605 Add support for inferring that a load from a pointer implies that it is not null. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111959 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-24 20:47:29 +00:00
Owen Anderson
59b06dc775 Don't assume that all constants with integer types are ConstantInts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-24 07:55:44 +00:00
Devang Patel
49d9638075 Let FE use derived types for DW_TAG_friend. 
Patch by Alexander Herz!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111861 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 23:16:25 +00:00
Devang Patel
0c4720c6bd Handle qualified constants that are directly folded by FE. 
PR 7920.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111820 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 18:25:56 +00:00
Owen Anderson
02dd53e1c5 Now that PassInfo and Pass::ID have been separated, move the rest of the passes over to the new registration API. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111815 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-23 17:52:01 +00:00
Dan Gohman
a3833f18bf CreateTemporaryType doesn't needs its Context argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-20 22:39:47 +00:00
Dan Gohman
489b29b0a4 Introduce a new temporary MDNode concept. Temporary MDNodes are 
not part of the IR, are not uniqued, and may be safely RAUW'd.
This replaces a variety of alternate mechanisms for achieving
the same effect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111681 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-20 22:02:26 +00:00
Dan Gohman
7316638bc7 Convert DbgInfoPrinter to use errs() instead of outs(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111659 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-20 18:03:05 +00:00
Dan Gohman
8a757aeac4 Revert r111199; it breaks -debug-pass=Structure output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111500 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 01:29:07 +00:00
Chris Lattner
2215c607c3 refix PR1143 by making basicaa analyze zexts of indices aggresively, 
which I broke with a recent patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111452 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 23:09:49 +00:00
Chris Lattner
ff2efb9f9c GetLinearExpression is only called when TD is non-null, pass as 
a reference instead of pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111445 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 22:52:09 +00:00
Chris Lattner
8807e9fbdf 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111444 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 22:47:56 +00:00
Chris Lattner
30963fbe8f 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111433 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 22:07:29 +00:00
Owen Anderson
b81fd62a66 Use ConstantRange to propagate information through value definitions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111425 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 21:11:37 +00:00
Daniel Dunbar
4ae56d725d Revert r111375, "move gep decomposition out of ValueTracking into BasicAA. The 
form of", it doesn't pass tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111385 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 18:43:08 +00:00
Owen Anderson
00ac77ef88 Inform LazyValueInfo whenever a block is deleted, to avoid dangling pointer issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 18:39:01 +00:00
Chris Lattner
6b63037306 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111375 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 18:22:17 +00:00
Chris Lattner
91b2307a89 fix PR7589: In brief: 
gep P, (zext x) != gep P, (sext x)

DecomposeGEPExpression was getting this wrong, confusing
basicaa.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111352 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 04:28:19 +00:00
Dan Gohman
bbc1da8ded Tweak IVUsers' concept of "interesting" to exclude add recurrences 
where the step value is an induction variable from an outer loop, to
avoid trouble trying to re-expand such expressions. This effectively
hides such expressions from indvars and lsr, which prevents them
from getting into trouble.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111317 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-17 22:50:37 +00:00
Owen Anderson
4bb3eafab5 Fix another iterator invalidation that caused a *really* nasty miscompilation in 403.gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111210 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 23:42:33 +00:00
Dan Gohman
65bffec2c2 Make dumpPassStructure be a PMDataManager abstraction, rather than 
a Pass abstraction, since that's the level it's actually used at.
Rename Pass' dumpPassStructure to dumpPass.

This eliminates an awkward use of getAsPass() to convert a PMDataManager*
into a Pass* just to permit a dumpPassStructure call.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111199 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 22:45:12 +00:00
Dan Gohman
1895991a08 To create a copy of a SmallVector with an element removed from the 
middle, copy the elements in two groups, rather than copying all the
elements and then doing an erase on the middle of the result. These
are SmallVectors, so we shouldn't expect to hit dynamic allocation
in the common case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111151 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:57:24 +00:00
Dan Gohman
0c5e95df57 Tidy whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111147 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:34:09 +00:00
Dan Gohman
619d3324bd Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:31:39 +00:00
Dan Gohman
8d9c7a6701 Use const_iterator in a few places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111144 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:30:01 +00:00
Dan Gohman
2d16fc5ff0 Use iterators instead of indices in a few more places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111143 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:27:53 +00:00
Dan Gohman
e28d7922f7 Micro-optimize SCEVConstant comparison. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:25:35 +00:00
Dan Gohman
2f199f9952 Move SCEVNAryExpr's virtual member functions out of line, and convert 
them to iterators.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111140 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:21:27 +00:00
Dan Gohman
bb85409b51 Use iterators instead of indices in simple cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111138 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:16:11 +00:00
Dan Gohman
c4f77983d8 Avoid gratuitous inefficiency in ifndef NDEBUG code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111137 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:13:54 +00:00
Dan Gohman
d3f171d66f Make one getAddExpr call when analyzing a+b+c+d+e+... instead of one 
for each add instruction. Ditto for Mul.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111136 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 16:03:49 +00:00
Dan Gohman
57560da3f5 Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 15:57:14 +00:00
Dan Gohman
9883b95a2b Revert r111058, the lint check for indirectbr successors that aren't 
address-taken. This can occur normally, if the code which took the
address got DCEd.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111121 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 14:39:19 +00:00
Argyrios Kyrtzidis
8c8b9ee8c8 Revert r111082. No warnings for this common pattern. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111102 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-15 10:27:23 +00:00
Argyrios Kyrtzidis
7268d97ae6 Add ATTRIBUTE_UNUSED to methods that are not supposed to be used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111082 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-14 21:35:10 +00:00
Dan Gohman
61556e3a94 Add a lint check for an indirectbr destination which has not 
had its address taken.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111058 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 23:56:28 +00:00
Dan Gohman
0ad2c7ace8 Various optimizations. Don't compare two loops' depths 
when they are the same loop. Don't compare two instructions'
loop depths when they are in the same block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 21:24:58 +00:00
Dan Gohman
9cba97886c When testing whether one loop contains another, test this directly 
rather than testing whether the loop contains the other's header.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:23:25 +00:00
Dan Gohman
9f1fb42b7e Add a const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:17:27 +00:00
Dan Gohman
58a85b96b8 When creating a symmetric SCEV with a constant operand, put 
the constant operand on the left, as that's where ScalarEvolution
will end up canonicalizing to.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111037 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:17:14 +00:00
Dan Gohman
71c4144076 An add recurrence is loop-invariant in any loop inside of its 
associated loop. This avoids potentially expensive traversals
of the add recurrence's operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-13 20:11:39 +00:00
Dan Gohman
727356fc7d Optimize ScalarEvolution::getAddExpr's operand factoring code by 
having it finish processing all of the muliply operands before
starting the whole getAddExpr process over again, instead of
immediately after the first simplification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110916 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 15:00:23 +00:00
Dan Gohman
918e76b8b5 Hoist some loop-invariant code out of a hot loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110915 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 14:52:55 +00:00
Dan Gohman
dc7692b1ad Optimize ScalarEvolution::getAddExpr's duplicate operand detection 
by having it finish processing the whole operand list before
starting the whole getAddExpr process over again, instead of
immediately after the first duplicate is found.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-12 14:46:54 +00:00
Devang Patel
ebd53742c6 Even if a variable has constant value all the time, it is still a variable in gdb's eyes. 
Tested by scope.exp in gdb testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110876 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 23:17:54 +00:00
Owen Anderson
cf6abd2486 Fix a subtle use-after-free issue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110863 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 22:36:04 +00:00
Dan Gohman
bd4d66d56a Make LoopPass::getContainedPass return a LoopPass* instead of a Pass* 
and remove casts from all its callers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 20:34:43 +00:00
Owen Anderson
2d0f2470ff Improve indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 04:24:25 +00:00
Dan Gohman
4ee87398e8 When analyzing loop exit conditions combined with and and or, don't 
make any assumptions about when the two conditions will agree on when
to permit the loop to exit. This fixes PR7845.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110758 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-11 00:12:36 +00:00
Dan Gohman
af08a36bd6 Rename and reorder the arguments to isImpliedCond, for consistency and clarity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 23:46:30 +00:00
Owen Anderson
625051be7e Now that we're using ConstantRange to represent potential values, make use of that represenation to 
create constraints from comparisons other than eq/neq.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 23:20:01 +00:00
Devang Patel
6bf058c9aa Add missing argument. CreateCompositeTypeEx() users, please verify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110717 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:22:49 +00:00
Owen Anderson
9f01406179 Switch over to using ConstantRange to track integral values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110714 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:03:09 +00:00
Devang Patel
e7e5a0f6fb Do not forget debug info for enums. Use named mdnode to keep track of these types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110712 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 20:01:20 +00:00
Tobias Grosser
73362c820b RegionInfo: Do not assert if a BB is not part of the dominance tree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 09:54:35 +00:00
Devang Patel
2936807564 Handle TAG_constant for integers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110656 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-10 07:11:13 +00:00
Devang Patel
2739896cdd Refactor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110607 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 21:39:24 +00:00
Owen Anderson
2f3ffb80fa Add ConstantRange information to the debugging output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110598 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-09 20:50:46 +00:00
Owen Anderson
90c579de5a Reapply r110396, with fixes to appease the Linux buildbot gods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:33:48 +00:00
Dan Gohman
e26a7b5e21 Implement a proper getModRefInfo for va_arg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110458 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:24:38 +00:00
Dan Gohman
b9db52dcbc Be more conservative in the face of volatile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110456 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:11:28 +00:00
Dan Gohman
9b8639c9bd Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:10:45 +00:00
Dan Gohman
6ce9d8b0ed 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 01:25:49 +00:00
Owen Anderson
e6a4a36096 Fix botched revert. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110416 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:36:20 +00:00
Owen Anderson
1f74590e9d Revert r110396 to fix buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:23:35 +00:00
Dan Gohman
5eeb19d189 Fix 80-column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:48:14 +00:00
Owen Anderson
9ccaf53ada 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:42:04 +00:00
Dan Gohman
130073904f 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110393 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:34:50 +00:00
Dan Gohman
0c3f3358df Yes, we can do better, but this is not the place for it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110391 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:23:32 +00:00
Owen Anderson
5be2e78fa1 Add the beginnings of infrastructure for range tracking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:59:19 +00:00
Owen Anderson
db78d73d96 Split the tag and value members of LVILatticeVal in preparation for expanding the lattice to something that won't fit in two bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:10:46 +00:00
Dan Gohman
5fa417c790 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110382 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 22:09:15 +00:00
Dan Gohman
34fa82f7e8 Revert r110270 for now. It appears to uncover a memdep bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 00:43:10 +00:00
Dan Gohman
907857d746 The trouble with testing for "ModRef" and "NoModRef" is that 
one is a suffix of the other, and FileCheck accepts superstrings.
Adjust the output to avoid this problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110280 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 23:37:55 +00:00
Dan Gohman
3dcc91ee8c 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 22:56:29 +00:00
Dan Gohman
ddd3a8899a Fix a minor bug which resulted in intermediate calculations 
using wider types than are necessary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 19:52:50 +00:00
Torok Edwin
e89652ccad Add a missing function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110195 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-04 11:42:45 +00:00
Dan Gohman
a41af344c2 Remove PointerAccessInfo, which nothing was using. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110167 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 23:08:10 +00:00
Dan Gohman
79fca6fea8 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110155 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 21:48:53 +00:00
Dan Gohman
6fc24467e9 The singular of "indices" is "index". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110135 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 20:23:52 +00:00
Dan Gohman
17f647d332 Delete an unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110134 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 20:20:56 +00:00
Dan Gohman
14a498a486 Make AliasAnalysis::getModRefInfo conservative in the face of volatility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110120 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 17:27:43 +00:00
Dan Gohman
84b8ad321b Fix a typo Devang noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110115 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 16:48:31 +00:00
Michael J. Spencer
4473b37018 Fix CMake build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110097 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 02:38:20 +00:00
Dan Gohman
ef1cfac9e5 Introduce a symbolic constant for ~0u for use with AliasAnalysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110091 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 01:03:11 +00:00
Dan Gohman
847a84efd2 Add a convenient form of AliasAnalysis::alias for the case where the sizes 
are unknown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 00:56:30 +00:00
Dan Gohman
ab37f50838 Make SCEVUnknown a CallbackVH, so that it can be notified directly 
of Value deletions and RAUWs, instead of relying on ScalarEvolution's
Scalars map being notified, as that's complicated at best, and
insufficient in general.

This means SCEVUnknown needs a non-trivial destructor, so introduce
a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:49:30 +00:00
Dan Gohman
c182cb5784 Sketch up a preliminary Type-Based Alias Analysis implementation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110077 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:11:01 +00:00
Dan Gohman
a8afb2a623 Add a lint check for indirectbr with no successors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110074 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 23:06:43 +00:00
Devang Patel
5b164b5a5c Add explicit constructors. Patch by Renato Golin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110072 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 22:51:46 +00:00
Dan Gohman
811edc1f1a Fix namespace polution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110056 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-02 18:50:06 +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
Owen Anderson
7f9cb744f2 Add an initial implementation of PHI translation for LazyValueInfo. This involves rolling back some 
of my earlier data structure improvements until I can ensure that there are no iterator invalidation problems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109935 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 23:59:40 +00:00
Owen Anderson
81881bcd35 Revert my last two patches to LVI, which recent changes have exposed a miscompilation in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 20:56:07 +00:00
Eric Christopher
e6cbfa6b09 Speculatively revert r109705 since it seems to be causing some build bot 
angst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109718 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 01:25:38 +00:00
Dan Gohman
c6743207e2 Factor out some of the code for updating old SCEVUnknown values, and 
extend it to handle the case where multiple RAUWs affect a single
SCEVUnknown.

Add a ScalarEvolution unittest to test for this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109705 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-29 00:17:55 +00:00
Owen Anderson
e2fb451dbb Pass the queried value by argument rather than in a member, in preparation for supporting PHI translation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109701 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 23:50:08 +00:00
Owen Anderson
9da5c997c0 Get rid of LVIQuery as a distinct data structure, so that we don't have to initialize a new set of maps on every query. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109679 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 22:07:25 +00:00
Daniel Dunbar
329878f4dd RegionInfo: Make sure to free cached nodes; Tobias, please check! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109650 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 20:28:50 +00:00
Gabor Greif
5d4b32ef96 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109585 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 15:31:37 +00:00
Gabor Greif
ce4a62639f use Value* constructor of CallSite to create potentially improper site, and test that 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109580 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:35:54 +00:00
Gabor Greif
3737984e95 use Value* constructor of CallSite to create potentially improper site 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 12:19:46 +00:00
Gabor Greif
30ae792f06 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109578 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:57:28 +00:00
Gabor Greif
b0686ea808 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 10:46:09 +00:00
Dan Gohman
81f9121cda Make SCEVCallbackVH::allUsesReplacedWith update the old SCEVUnknown 
object, as it may still be referenced by SCEVs not cleaned up by the
use list traversal.

Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown
object for the original value, not for any value in the use list,
because other SCEVUnknown values aren't necessary obsolete at that
point.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109570 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 01:09:07 +00:00
Dan Gohman
59846aced2 Make SCEVCallbackVH::allUsesReplacedWith unconditionally delete 
the old value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109567 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 00:28:25 +00:00
Owen Anderson
9a65dc9968 Rearrange several datastructures in LazyValueInfo to improve compile time. 
This is still not perfect, but better than it was before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 23:58:11 +00:00
Gabor Greif
b344a346f1 reintroduce original (asserting) semantics of CallSite(Instruction *II) 
add instead a CallSite(Value* V) constructor that is consistent with ImmutableCallSize
and use that one in client code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109553 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:53:28 +00:00
Gabor Greif
622b7cf147 recommit simplification (originally r109504, backed out in r109508) now that problem in CallSiteBase is fixed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 22:02:00 +00:00
Gabor Greif
49d0bca86c back out r109504, breaks the bots 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109508 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 15:18:11 +00:00
Gabor Greif
c0d4aed6f7 simplify 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109504 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:38:38 +00:00
Gabor Greif
0de11e0e66 use ImmutableCallSite for const-corrgoodness 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109503 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 14:15:29 +00:00
Tobias Grosser
0e6fcf4be3 RegionInfo: Add getMaxRegionExit() 
getMaxRegionExit returns the exit of the maximal refined region starting
at a specific basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109496 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 08:39:43 +00:00
Tobias Grosser
082d587d35 Add function to query RegionInfo about loops. 
* contains(Loop), * getOutermostLoop()
* Improve getNameStr() to return a sensible name, if basic blocks are not named.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-27 04:17:13 +00:00
Owen Anderson
cfa7fb6df5 Add an initial implementation of LazyValueInfo updating for JumpThreading. Disabled for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109424 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:48:03 +00:00
Dan Gohman
6ebfd72f37 Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable 
it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:28:14 +00:00
Dan Gohman
a29dbd2dcc Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:34:05 +00:00
Dan Gohman
f8336a75c2 Eliminate getCanonicalInductionVariableIncrement's last user and 
eliminate it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109270 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:34:51 +00:00
Dan Gohman
63137d5681 Simplify this code; it can use the regular CFG utlities rather than 
the BlockTraits abstractions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109268 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:25:16 +00:00
Dan Gohman
304a7a6242 Micro-optimize SCEVComplexityCompare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:20:52 +00:00
Dan Gohman
e72079ac69 Add a const qualifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109266 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 21:18:55 +00:00
Gabor Greif
f95eef695d use cascading operator-> feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109104 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:49:27 +00:00
Gabor Greif
96f1d8ebdd mass elimination of reliance on automatic iterator dereferencing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 13:36:47 +00:00
Gabor Greif
11aa60d05a use -> instead of (*). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109094 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:12:32 +00:00
Gabor Greif
3d8586eb63 cache dereferenced iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109093 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 11:07:46 +00:00
Tobias Grosser
f96b006367 Add new RegionInfo pass. 
The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 07:46:31 +00:00
Dan Gohman
17aa92c92a Make NamedMDNode not be a subclass of Value, and simplify the interface 
for creating and populating NamedMDNodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109061 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 23:38:33 +00:00
Owen Anderson
d8cc7be026 Add INSTANTIATE_AG_PASS, which combines RegisterPass<> with RegisterAnalysisGroup<> for pass registration. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109058 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 23:07:00 +00:00
Owen Anderson
d13db2c59c Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 22:09:45 +00:00
Jim Grosbach
e62b690607 tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109038 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 21:36:25 +00:00
Dan Gohman
872814ae04 Disallow null as a named metadata operand. 
Make MDNode::destroy private.
Fix the one thing that used MDNode::destroy, outside of MDNode itself.

One should never delete or destroy an MDNode explicitly. MDNodes
implicitly go away when there are no references to them (implementation
details aside).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-21 18:54:18 +00:00
Dan Gohman
fc3678a346 Fix SCEV denormalization of expressions where the exit value from 
one loop is involved in the increment of an addrec for another
loop. This fixes rdar://8168938.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108863 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 17:06:20 +00:00
Dan Gohman
eb4152c192 Add a fast path for x - x. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:53:00 +00:00
Dan Gohman
133e295b36 Simplify this code; LoopInfo::getCanonicalInductionVariable will only 
find integer induction variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108853 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:46:58 +00:00
Dan Gohman
7c58dbd88c Make getOrInsertCanonicalInductionVariable guarantee that its 
result is a PHINode*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108852 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:44:52 +00:00
Dan Gohman
b7391fadff Change an argument from an Instruction* to a Value*, which is all 
that is needed here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108850 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:34:50 +00:00
Dan Gohman
082d6b6536 Minor code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108848 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 16:32:11 +00:00
Owen Anderson
8be3291f59 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108818 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 08:26:15 +00:00
Owen Anderson
9e081004da Reapply r108794, a fix for the failing test from last time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108813 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 06:52:42 +00:00
Daniel Dunbar
e8a469cdb4 Revert r108794, "Separate PassInfo into two classes: a constructor-free 
superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo).", it is
breaking teh everything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108805 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 03:06:07 +00:00
Owen Anderson
8ba15cb709 Separate PassInfo into two classes: a constructor-free superclass (StaticPassInfo) and a constructor-ful subclass (PassInfo). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108794 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 01:19:58 +00:00
Dan Gohman
fb272ad614 Minor code simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-20 00:57:18 +00:00
Stuart Hastings
0db4271069 Correct line info for declarations/definitions. Radar 8063111. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108784 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-19 23:56:30 +00:00
Gabor Greif
a6aac4c5bc eliminate CallInst::ArgOffset 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-16 09:38:02 +00:00
Dan Gohman
bb5d92741b Fix the order that SCEVExpander considers add operands in so that 
it doesn't miss an opportunity to form a GEP, regardless of the
relative loop depths of the operands. This fixes rdar://8197217.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108475 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 23:38:13 +00:00
Dan Gohman
f53462d2ea Teach ScalarEvolution how to fold trunc(undef) and anyext(undef) to undef. 
This helps LSR behave more consistently on bugpoint-reduced testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108451 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 20:02:11 +00:00
Gabor Greif
e616690466 cache another dereferenced iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108421 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 10:19:23 +00:00
Chris Lattner
d2bfe54b0a Fix PR7647, handling the case when 'To' ends up being 
mutated by recursive simplification.  This also enhances
ReplaceAndSimplifyAllUses to actually do a real RAUW
at the end of it, which updates any value handles
pointing to "From" to start pointing to "To".  This
seems useful for debug info and random other VH users.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 06:36:08 +00:00
Eli Friedman
e2f93131fb Revert r108401; it breaks bootstrap :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 05:09:31 +00:00
Eli Friedman
3ed60a2a22 Add AssertingVH which makes PR7647 break consistently. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-15 04:46:14 +00:00
Dan Gohman
545d00645c Add a lint check for mismatched return types, inspired by PR6944. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108162 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 18:02:04 +00:00
Duncan Sands
3472766f9e Convert some tab stops into spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108130 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 08:16:59 +00:00
Chandler Carruth
490b8f5d64 Add parentheses around an || to correct the logic. Also silences a GCC warning 
that was actually useful here.

Chris, please double check that this is the correct interpretation. I was
pretty sure, and ran it by Nick as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108129 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 06:47:05 +00:00
Chris Lattner
eae2895120 fix PR7429, a crash turning a load from a string into a float. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-12 00:22:51 +00:00
Gabor Greif
19e5ada58a remove useless cast and fix typos in comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107989 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:42:04 +00:00
Gabor Greif
f64f9cf7ec cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:39:02 +00:00
Gabor Greif
8ba992ad52 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107982 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 16:22:36 +00:00
Gabor Greif
d7cc5215f1 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107978 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:53:42 +00:00
Gabor Greif
1f2c0c9ead cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:52:36 +00:00
Gabor Greif
7656018c22 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107976 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 15:40:10 +00:00
Gabor Greif
5891ac8be8 cache result of operator* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107967 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-09 14:28:41 +00:00