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Author SHA1 Message Date
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