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3625 Commits

Author SHA1 Message Date
Dan Gohman
4fd92434f1 Make getOrInsertCanonicalInductionVariable guarantee that its 
result is a PHINode*.

llvm-svn: 108852
 2010-07-20 16:44:52 +00:00
Dan Gohman
191f2e4dbd Change an argument from an Instruction* to a Value*, which is all 
that is needed here.

llvm-svn: 108850
 2010-07-20 16:34:50 +00:00
Dan Gohman
d1488fd8bc Minor code cleanups. 
llvm-svn: 108848
 2010-07-20 16:32:11 +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
3ff13affda Minor code simplification. 
llvm-svn: 108793
 2010-07-20 00:57:18 +00:00
Stuart Hastings
61475c5c3c Correct line info for declarations/definitions. Radar 8063111. 
llvm-svn: 108784
 2010-07-19 23:56:30 +00:00
Gabor Greif
6d673953e3 eliminate CallInst::ArgOffset 
llvm-svn: 108522
 2010-07-16 09:38:02 +00:00
Dan Gohman
fbbdfcaea7 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.

llvm-svn: 108475
 2010-07-15 23:38:13 +00:00
Dan Gohman
64b1e82a7c Teach ScalarEvolution how to fold trunc(undef) and anyext(undef) to undef. 
This helps LSR behave more consistently on bugpoint-reduced testcases.

llvm-svn: 108451
 2010-07-15 20:02:11 +00:00
Gabor Greif
26ec65ac3c cache another dereferenced iterator 
llvm-svn: 108421
 2010-07-15 10:19:23 +00:00
Chris Lattner
19eff2a9f6 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.

llvm-svn: 108415
 2010-07-15 06:36:08 +00:00
Eli Friedman
8b3a17e613 Revert r108401; it breaks bootstrap :( 
llvm-svn: 108407
 2010-07-15 05:09:31 +00:00
Eli Friedman
fd473a746c Add AssertingVH which makes PR7647 break consistently. 
llvm-svn: 108401
 2010-07-15 04:46:14 +00:00
Dan Gohman
c128e70ff2 Add a lint check for mismatched return types, inspired by PR6944. 
llvm-svn: 108162
 2010-07-12 18:02:04 +00:00
Duncan Sands
41b4a6b36a Convert some tab stops into spaces. 
llvm-svn: 108130
 2010-07-12 08:16:59 +00:00
Chandler Carruth
57041d81df 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.

llvm-svn: 108129
 2010-07-12 06:47:05 +00:00
Chris Lattner
fd4a09fc0a fix PR7429, a crash turning a load from a string into a float. 
llvm-svn: 108113
 2010-07-12 00:22:51 +00:00
Gabor Greif
8e66a42784 remove useless cast and fix typos in comment 
llvm-svn: 107989
 2010-07-09 16:42:04 +00:00
Gabor Greif
3b740e9085 cache result of operator* 
llvm-svn: 107988
 2010-07-09 16:39:02 +00:00
Gabor Greif
aa389f5085 cache result of operator* 
llvm-svn: 107982
 2010-07-09 16:22:36 +00:00
Gabor Greif
070b9a2cc4 cache result of operator* 
llvm-svn: 107978
 2010-07-09 15:53:42 +00:00
Gabor Greif
d9a0e80213 cache result of operator* 
llvm-svn: 107977
 2010-07-09 15:52:36 +00:00
Gabor Greif
e82532a1c5 cache result of operator* 
llvm-svn: 107976
 2010-07-09 15:40:10 +00:00
Gabor Greif
2732561be9 cache result of operator* 
llvm-svn: 107967
 2010-07-09 14:28:41 +00:00
Gabor Greif
1d20021d82 do not repeatedly dereference use_iterator 
llvm-svn: 107963
 2010-07-09 13:17:13 +00:00
Stuart Hastings
d08fb75aaa Reverting r107918 and r107919. Radar 8063111. 
llvm-svn: 107930
 2010-07-08 23:25:39 +00:00
Stuart Hastings
43d226deea Fix decl/def debug info for template functions. Radar 8063111. 
llvm-svn: 107919
 2010-07-08 22:28:59 +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
Gabor Greif
a22e8148d4 conditionalize by CallInst::ArgOffset 
llvm-svn: 107767
 2010-07-07 10:34:03 +00:00
Dan Gohman
1e33b18e28 Add some more TODO comments. 
llvm-svn: 107657
 2010-07-06 15:23:00 +00:00
Dan Gohman
f855b39edd Add a comment. 
llvm-svn: 107656
 2010-07-06 15:21:57 +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
f638f4ff84 In ScalarEvolution::forgetValue, eliminate any SCEVUnknown 
entries associated with the value being erased in the
folding set map.  These entries used to be harmless, because
a SCEVUnknown doesn't store any information about its Value*,
so having a new Value allocated at the old Value's address
wasn't a problem. But now that ScalarEvolution is storing more
information about values, this is no longer safe.

llvm-svn: 107316
 2010-06-30 20:21:12 +00:00
Dan Gohman
c0cca7fdda Revert the part of r107257 which introduced new logic for using 
nsw and nuw flags from IR Instructions. On further consideration,
this isn't valid.

llvm-svn: 107298
 2010-06-30 17:27:11 +00:00
Dan Gohman
16206132b6 Improve ScalarEvolution's nsw and nuw preservation. 
llvm-svn: 107257
 2010-06-30 07:16:37 +00:00
Dan Gohman
9396b42ca4 When computing a new ConservativeResult, intersect it with 
the old one instead of replacing it, to be more precise.

llvm-svn: 107256
 2010-06-30 06:58:35 +00:00
Dan Gohman
0865966440 Rework scev-aa's basic computation so that it doesn't depend 
on ScalarEvolution successfully folding and preserving
range information for both A-B and B-A. Now, if it gets
either one, it's sufficient.

llvm-svn: 107249
 2010-06-30 06:12:16 +00:00
Dan Gohman
37f145c55b Simplify. 
llvm-svn: 107248
 2010-06-30 06:09:46 +00:00
Dan Gohman
ae36b1ed42 Fix ScalarEvolution's tripcount computation for chains of loops 
where each loop's induction variable's start value is the exit
value of a preceding loop.

llvm-svn: 107224
 2010-06-29 23:43:06 +00:00
Dan Gohman
1be9e7c0b6 Fix whitespace style. 
llvm-svn: 107175
 2010-06-29 18:12:34 +00:00
Duncan Sands
67aa21d7b5 Remove a pointless variable. 
llvm-svn: 107128
 2010-06-29 11:39:45 +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
90db61d638 Just as its not safe to blindly transfer the nsw bit from an add 
instruction to an add scev, it's not safe to blindly transfer the
inbounds flag from a gep instruction to an nsw on the scev for the
gep.

llvm-svn: 107117
 2010-06-29 01:41:41 +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