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3164 Commits

Author SHA1 Message Date
Dan Gohman
74d5144414 Use pre-increment instead of post-increment when the result is not used. 
llvm-svn: 106542
 2010-06-22 15:08:57 +00:00
Dan Gohman
a3bc6b13f7 Allow "exhaustive" trip count evaluation on phi nodes with all 
constant operands.

llvm-svn: 106537
 2010-06-22 13:15:46 +00:00
Devang Patel
f50b6147ad Use single interface, using twine, to get named metadata. 
getNamedMetadata().

llvm-svn: 106518
 2010-06-22 01:19:38 +00:00
Devang Patel
dee41b010a Do not rely on Twine temporaries to survive. 
llvm-svn: 106515
 2010-06-22 01:01:58 +00:00
Dan Gohman
6a3c46ad49 Use A.append(...) instead of A.insert(A.end(), ...) when A is a 
SmallVector, and other SmallVector simplifications.

llvm-svn: 106452
 2010-06-21 19:47:52 +00:00
Devang Patel
3dbb143c29 Do not directly use function names to construct new name for named metadata. 
"llvm.dbg.lv.~A" is not a valid name.

llvm-svn: 106438
 2010-06-21 18:36:58 +00:00
Dan Gohman
90c5f8753d Restore a call to rememberInstruction which was accidentally dropped 
in refactoring.

llvm-svn: 106398
 2010-06-19 22:50:35 +00:00
Dan Gohman
cec5b682b6 Fix ScalarEvolution's "exhaustive" trip count evaluation code to avoid 
assuming that loops are in canonical form, as ScalarEvolution doesn't
depend on LoopSimplify itself. Also, with indirectbr not all loops can
be simplified. This fixes PR7416.

llvm-svn: 106389
 2010-06-19 14:17:24 +00:00
Dan Gohman
fb091c213b Factor out duplicated code for reusing and inserting casts into 
a helper function.

llvm-svn: 106388
 2010-06-19 13:25:23 +00:00
Dan Gohman
b5ec637e57 Revert r106304 (105548 and friends), which are the SCEVComplexityCompare 
optimizations. There is still some nondeterminism remaining.

llvm-svn: 106306
 2010-06-18 19:54:20 +00:00
Dan Gohman
527b570925 Reapply 105540, 105542, and 105548, and revert r105732. 
llvm-svn: 106304
 2010-06-18 19:26:04 +00:00
Dan Gohman
75f6f94c48 Reapply 105546. 
llvm-svn: 106302
 2010-06-18 19:12:32 +00:00
Dan Gohman
ab895769a7 Reapply 105544. 
llvm-svn: 106301
 2010-06-18 19:09:27 +00:00
Dan Gohman
e20e668c7e Remove getIntegerSCEV; it's redundant with getConstant, and getConstant 
is more consistent with the ConstantInt API.

llvm-svn: 106281
 2010-06-18 14:33:50 +00:00
Dan Gohman
0b5b93b20d Eliminate unnecessary uses of getZExtValue(). 
llvm-svn: 106279
 2010-06-18 14:22:04 +00:00
Dan Gohman
eab6b51039 Fix a typo in a comment. 
llvm-svn: 106260
 2010-06-18 00:53:08 +00:00
Dan Gohman
1d9d93381a Simplify this code. 
llvm-svn: 106254
 2010-06-17 23:34:09 +00:00
Jim Grosbach
67b46d6303 A few more places where SCEVExpander bits need to skip over debug intrinsics 
when iterating through instructions. Yet more work for rdar://7797940

llvm-svn: 106149
 2010-06-16 21:13:38 +00:00
Devang Patel
108d77796f Check function pointer first, before comparing function names. 
llvm-svn: 106088
 2010-06-16 06:42:02 +00:00
Devang Patel
3282324020 Use separate named MDNode to hold each function's local variable info. 
This speeds up local variable handling in DwarfDebug.

llvm-svn: 106075
 2010-06-16 00:53:55 +00:00
Stuart Hastings
f9ef9ff3d6 Support for nested functions/classes in debug output. (Again.) Radar 7424645. 
llvm-svn: 105828
 2010-06-11 20:08:44 +00:00
Stuart Hastings
7b15c202c7 Delete duplicate function. 
llvm-svn: 105827
 2010-06-11 20:05:01 +00:00
Evan Cheng
28c151ae52 Revert 105540, 105542, 105544, 105546, and 105548 to unbreak bootstrapping. 
llvm-svn: 105740
 2010-06-09 18:59:43 +00:00
Kenneth Uildriks
2c6b68924d Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it can be reused from PartialSpecializationCost 
llvm-svn: 105725
 2010-06-09 15:11:37 +00:00
Dan Gohman
490f4d7020 The FoldingSet hash data includes pointer values, so it isn't 
determinstic. Instead, give SCEV objects an arbitrary sequence
number.

llvm-svn: 105548
 2010-06-07 19:36:14 +00:00
Dan Gohman
ee75f6f4dd Optimize this code somewhat by taking advantage of the fact 
that the operands are sorted.

llvm-svn: 105546
 2010-06-07 19:20:57 +00:00
Dan Gohman
e4676a62de Micro-optimize this, to speed up this hotspot in debug builds a little. 
llvm-svn: 105544
 2010-06-07 19:16:37 +00:00
Dan Gohman
044a968609 Micro-optimize this. 
llvm-svn: 105542
 2010-06-07 19:12:54 +00:00
Dan Gohman
65954b2eb4 Optimize ScalarEvolution's SCEVComplexityCompare predicate: don't go 
scrounging through SCEVUnknown contents and SCEVNAryExpr operands;
instead just do a simple deterministic comparison of the precomputed
hash data.

Also, since this is more precise, it eliminates the need for the slow
N^2 duplicate detection code.

llvm-svn: 105540
 2010-06-07 19:06:13 +00:00
Bill Wendling
a96eaed21d Create new accessors to get arguments for call/invoke instructions. It breaks 
encapsulation to force the users of these classes to know about the internal
data structure of the Operands structure. It also can lead to errors, like in
the MSIL writer.

llvm-svn: 105539
 2010-06-07 19:05:06 +00:00
Stuart Hastings
37ed2a9663 Revert 105492 & 105493 due to a testcase regression. Radar 7424645. 
llvm-svn: 105511
 2010-06-05 00:39:29 +00:00
Dan Gohman
1865db1b89 LSR needs to remember inserted instructions even in postinc mode, because 
there could be multiple subexpressions within a single expansion which
require insert point adjustment. This fixes PR7306.

llvm-svn: 105510
 2010-06-05 00:33:07 +00:00
Stuart Hastings
eb78f8db98 Support for nested functions/classes in debug output. Radar 7424645. 
llvm-svn: 105492
 2010-06-04 22:36:03 +00:00
Dan Gohman
332b06bd4f Fix normalization and de-normalization of non-affine SCEVs. 
llvm-svn: 105480
 2010-06-04 19:16:34 +00:00
Dan Gohman
56a2a0fb80 Fix the noalias checking so that it doesn't worry about 
an argument aliasing itself. Thanks Duncan!

llvm-svn: 105288
 2010-06-01 20:51:40 +00:00
Dan Gohman
13a88a7def Fix AliasDebugger to be aware of operand values too. 
llvm-svn: 105012
 2010-05-28 22:31:51 +00:00
Dan Gohman
fe69bf7b4c Add lint checks for function attributes. 
llvm-svn: 105009
 2010-05-28 21:43:57 +00:00
Dan Gohman
a20b0d02e6 Fix lint's memcpy and memmove checks, and its basic block traversal. 
llvm-svn: 104970
 2010-05-28 17:44:00 +00:00
Dan Gohman
9a50a9215c Detect self-referential values. 
llvm-svn: 104957
 2010-05-28 16:45:33 +00:00
Stuart Hastings
369d3391d8 Revert 104841, 104842, 104876 due to buildbot failures. Radar 7424645. 
llvm-svn: 104953
 2010-05-28 16:41:07 +00:00
Dan Gohman
8570c1a249 Eli pointed out that va_arg instruction result values don't 
reference the stack.

llvm-svn: 104951
 2010-05-28 16:34:49 +00:00
Dan Gohman
7981165281 Teach lint how to look through simple store+load pairs and other 
effective no-op constructs, to make it more effective on
unoptimized IR.

llvm-svn: 104950
 2010-05-28 16:21:24 +00:00
Dan Gohman
0d7d3faf8e Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of 
lib/Transforms/Utils and into lib/Analysis so that Analysis passes
can use them.

llvm-svn: 104949
 2010-05-28 16:19:17 +00:00
Dan Gohman
5ba21692e6 ConstantFoldConstantExpression can theoretically return null. 
llvm-svn: 104948
 2010-05-28 16:12:08 +00:00
Dan Gohman
a6c568fa77 Add a lint check for returning the address of stack memory. 
llvm-svn: 104936
 2010-05-28 04:33:42 +00:00
Stuart Hastings
60d799e343 Support for nested functions/classes in debug output. Radar 7424645. 
llvm-svn: 104841
 2010-05-27 16:16:54 +00:00
Jakob Stoklund Olesen
2803135445 Avoid counting InlineAsm as a call - it prevents loop unrolling. 
PR7026
Patch by Pekka Jääskeläinen!

llvm-svn: 104780
 2010-05-26 22:40:28 +00:00
Dan Gohman
0b5922b032 Fix Lint printing warnings multiple times. Remove the ErrorStr 
option from lintModule, which was an artifact from being
based on Verifier code.

llvm-svn: 104765
 2010-05-26 22:28:53 +00:00
Dan Gohman
2c70e05105 Reinstate checking of stackrestore, with checking for both Read 
and Write, and add a comment explaining this.

llvm-svn: 104756
 2010-05-26 22:21:25 +00:00
Dan Gohman
5ec2a338ac Stackrestore is not a load. 
llvm-svn: 104752
 2010-05-26 22:00:10 +00:00