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Author SHA1 Message Date
Dan Gohman 6e964c7fb4 Avoid #include <ScalarEvolution.h> in LoopSimplify.cpp, which doesn't 
actually use ScalarEvolution.

llvm-svn: 111124
 2010-08-16 14:44:03 +00:00
Dan Gohman 250b754428 Instead, teach SimplifyCFG to trim non-address-taken blocks from 
indirectbr destination lists.

llvm-svn: 111122
 2010-08-16 14:41:14 +00:00
Dan Gohman aa445c0751 LoopSimplify shouldn't split loop backedges that use indirectbr. PR7867. 
llvm-svn: 111061
 2010-08-14 00:43:09 +00:00
Dan Gohman 4a63fad976 Teach SimplifyCFG how to simplify indirectbr instructions. 
- Eliminate redundant successors.
 - Convert an indirectbr with one successor into a direct branch.

Also, generalize SimplifyCFG to be able to be run on a function entry block.
It knows quite a few simplifications which are applicable to the entry
block, and it only needs a few checks to avoid trouble with the entry block.

llvm-svn: 111060
 2010-08-14 00:29:42 +00:00
Dan Gohman 0f7892b8ae Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg") 
instead, as an example of what this looks like.

llvm-svn: 110478
 2010-08-06 21:48:06 +00:00
Owen Anderson a7aed18624 Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson bda59bd247 Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Owen Anderson 755aceb5d0 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.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Gabor Greif f0084e1333 simplify 
llvm-svn: 109589
 2010-07-28 15:52:43 +00:00
Gabor Greif 7b0a5fd2a5 simplify: CallSite::get --> CallSite constructor 
llvm-svn: 109506
 2010-07-27 15:02:37 +00:00
Dan Gohman 0141c13b22 Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogus 
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.

Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.

This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.

llvm-svn: 109413
 2010-07-26 18:11:16 +00:00
Dan Gohman a7908ae369 Preserve ScalarEvolution in the loop unroller. 
llvm-svn: 109412
 2010-07-26 18:02:06 +00:00
Nick Lewycky 7bc0443f2b Revert this because we can't clone cyclic MDNodes which are creating during a 
build of llvm-gcc.

llvm-svn: 109355
 2010-07-24 20:54:02 +00:00
Nick Lewycky 14b69d59dd Whether function-local or not, a MDNode may reference a Function in which case 
it needs to be mapped to refer to the function in the new module, not the old
one. Fixes PR7700.

llvm-svn: 109353
 2010-07-24 19:43:25 +00:00
Devang Patel 5fa3813329 Speculatively revert 109117 
llvm-svn: 109132
 2010-07-22 18:44:00 +00:00
Gabor Greif 59f9970ba5 keep in 80 cols 
llvm-svn: 109122
 2010-07-22 17:18:03 +00:00
Devang Patel fac440cfb6 Map MDNode correctly. 
A non function local MDNode can have an operand which is cloned by MapValue(). 

llvm-svn: 109117
 2010-07-22 16:35:00 +00:00
Gabor Greif dde79d8f1a mass elimination of reliance on automatic iterator dereferencing 
llvm-svn: 109103
 2010-07-22 13:36:47 +00:00
Gabor Greif 36f25dfd33 pass dereferenced iterator to dyn_cast 
llvm-svn: 109098
 2010-07-22 11:43:44 +00:00
Gabor Greif 3e44ea1917 undo 80 column trespassing I caused 
llvm-svn: 109092
 2010-07-22 10:37:47 +00:00
Dan Gohman 2637cc1a38 Make NamedMDNode not be a subclass of Value, and simplify the interface 
for creating and populating NamedMDNodes.

llvm-svn: 109061
 2010-07-21 23:38:33 +00:00
Owen Anderson a57b97e7e7 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Dan Gohman 7373bd9973 Use DebugLocs instead of MDNodes. 
llvm-svn: 108967
 2010-07-20 23:49:05 +00:00
Dan Gohman 5c2e65b7bf Don't look up the "dbg" metadata kind by name. 
llvm-svn: 108961
 2010-07-20 23:09:34 +00:00
Dan Gohman efd7f9c360 Reorder the contents of various getAnalysisUsage functions, eliminating 
a redundant loopsimplify run from the default -O2 sequence.

llvm-svn: 108539
 2010-07-16 17:58:45 +00:00
Gabor Greif 6d673953e3 eliminate CallInst::ArgOffset 
llvm-svn: 108522
 2010-07-16 09:38:02 +00:00
Owen Anderson 13700ebb02 Remove unneeded check, and correct style. 
llvm-svn: 108427
 2010-07-15 16:38:22 +00:00
Chris Lattner e41ab07c61 make various clients of ReplaceAndSimplifyAllUses tolerate 
it *changing* the things it replaces, not just causing them
to drop to null.  There is no functionality change yet, but 
this is required for a subsequent patch.

llvm-svn: 108414
 2010-07-15 06:06:04 +00:00
Owen Anderson 2cfe91379b Extend SimplifyCFG's common-destination folding heuristic to allow a single 
"bonus" instruction to be speculatively executed.  Add a heuristic to
ensure we're not tripping up out-of-order execution by checking that this bonus
instruction only uses values that were already guaranteed to be available.

This allows us to eliminate the short circuit in (x&1)&&(x&2).

llvm-svn: 108351
 2010-07-14 19:52:16 +00:00
Gabor Greif 8629f12bb8 cache dereferenced iterators 
llvm-svn: 108133
 2010-07-12 10:59:23 +00:00
Gabor Greif d993402df3 cache dereferenced iterators 
llvm-svn: 108132
 2010-07-12 10:49:54 +00:00
Gabor Greif fd8e7d4a0f cache result of operator* 
llvm-svn: 107984
 2010-07-09 16:31:08 +00:00
Gabor Greif e7650c7c29 cache result of operator* 
llvm-svn: 107983
 2010-07-09 16:26:41 +00:00
Gabor Greif 04af1e4f65 cache result of operator* 
llvm-svn: 107981
 2010-07-09 16:17:52 +00:00
Gabor Greif 6d8870fc35 cache result of operator* 
llvm-svn: 107975
 2010-07-09 15:25:42 +00:00
Gabor Greif 329c4d8ed9 cache result of operator* 
llvm-svn: 107974
 2010-07-09 15:25:09 +00:00
Gabor Greif 4247949ce9 cache result of operator* 
llvm-svn: 107968
 2010-07-09 14:29:14 +00:00
Gabor Greif a02f232c1b cache result of operator* 
llvm-svn: 107966
 2010-07-09 14:18:23 +00:00
Gabor Greif f0821f39ee cache operator*'s result (in multiple functions) 
llvm-svn: 107965
 2010-07-09 14:02:13 +00:00
Devang Patel cefe3831b7 MDString is already checked earlier. 
llvm-svn: 107516
 2010-07-02 21:13:23 +00:00
Jim Grosbach e74c78d539 lowerinvoke needs to handle aggregate function args like sjlj eh does. 
llvm-svn: 107335
 2010-06-30 22:22:59 +00:00
Gabor Greif e9acc46f65 use getArgOperand instead of getOperand 
llvm-svn: 107269
 2010-06-30 09:14:26 +00:00
Gabor Greif ec60adf161 use CallInst::ArgOffset 
llvm-svn: 107003
 2010-06-28 12:30:07 +00:00
Gabor Greif 2de43a7c5c use ArgOperand API and CallInst::ArgOffset 
llvm-svn: 107002
 2010-06-28 12:29:20 +00:00
Dale Johannesen ce97d55ad9 The hasMemory argument is irrelevant to how the argument 
for an "i" constraint should get lowered; PR 6309.  While
this argument was passed around a lot, this is the only
place it was used, so it goes away from a lot of other
places.

llvm-svn: 106893
 2010-06-25 21:55:36 +00:00
Gabor Greif e3ba486c9f use ArgOperand API (one more hunk I could split) 
llvm-svn: 106825
 2010-06-25 07:58:41 +00:00
Gabor Greif 5f3e656a1b use ArgOperand API (some hunks I could split) 
llvm-svn: 106824
 2010-06-25 07:57:14 +00:00
Gabor Greif 42f620cc55 use callsite to obtain all arguments 
llvm-svn: 106728
 2010-06-24 09:56:43 +00:00
Devang Patel 0dc3c2d37e Use ValueMap instead of DenseMap. 
The ValueMapper used by various cloning utility maps MDNodes also.

llvm-svn: 106706
 2010-06-24 00:33:28 +00:00
Devang Patel d8dedee96d Use available typedef for " DenseMap<const Value*, Value*>". 
llvm-svn: 106699
 2010-06-24 00:00:42 +00:00