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1441 Commits

Author SHA1 Message Date
Dan Gohman
d04a608a73 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
13c66ce161 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
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Owen Anderson
b9762c07cb 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
ecd9b45b05 simplify 
llvm-svn: 109589
 2010-07-28 15:52:43 +00:00
Gabor Greif
394841cea8 simplify: CallSite::get --> CallSite constructor 
llvm-svn: 109506
 2010-07-27 15:02:37 +00:00
Dan Gohman
23a6a1bdc5 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
7d588b7dec Preserve ScalarEvolution in the loop unroller. 
llvm-svn: 109412
 2010-07-26 18:02:06 +00:00
Nick Lewycky
8cbc57da86 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
7094bd27bc 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
f53de95e64 Speculatively revert 109117 
llvm-svn: 109132
 2010-07-22 18:44:00 +00:00
Gabor Greif
feb96f2df2 keep in 80 cols 
llvm-svn: 109122
 2010-07-22 17:18:03 +00:00
Devang Patel
58b7143697 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
96a9f8c7c6 mass elimination of reliance on automatic iterator dereferencing 
llvm-svn: 109103
 2010-07-22 13:36:47 +00:00
Gabor Greif
87ef691878 pass dereferenced iterator to dyn_cast 
llvm-svn: 109098
 2010-07-22 11:43:44 +00:00
Gabor Greif
a7509fca78 undo 80 column trespassing I caused 
llvm-svn: 109092
 2010-07-22 10:37:47 +00:00
Dan Gohman
859ffd353e 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
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Dan Gohman
6f009c4a42 Use DebugLocs instead of MDNodes. 
llvm-svn: 108967
 2010-07-20 23:49:05 +00:00
Dan Gohman
66ae369e76 Don't look up the "dbg" metadata kind by name. 
llvm-svn: 108961
 2010-07-20 23:09:34 +00:00
Dan Gohman
b5593f8fda 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
17c48ecd68 eliminate CallInst::ArgOffset 
llvm-svn: 108522
 2010-07-16 09:38:02 +00:00
Owen Anderson
b9f325bab4 Remove unneeded check, and correct style. 
llvm-svn: 108427
 2010-07-15 16:38:22 +00:00
Chris Lattner
63cfa4b8e0 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
5de6c42ebd 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
95805d51b8 cache dereferenced iterators 
llvm-svn: 108133
 2010-07-12 10:59:23 +00:00
Gabor Greif
32f6368a27 cache dereferenced iterators 
llvm-svn: 108132
 2010-07-12 10:49:54 +00:00
Gabor Greif
4d1241bddb cache result of operator* 
llvm-svn: 107984
 2010-07-09 16:31:08 +00:00
Gabor Greif
fc355ccebb cache result of operator* 
llvm-svn: 107983
 2010-07-09 16:26:41 +00:00
Gabor Greif
9259059af3 cache result of operator* 
llvm-svn: 107981
 2010-07-09 16:17:52 +00:00
Gabor Greif
4d54dede01 cache result of operator* 
llvm-svn: 107975
 2010-07-09 15:25:42 +00:00
Gabor Greif
dcaa85787c cache result of operator* 
llvm-svn: 107974
 2010-07-09 15:25:09 +00:00
Gabor Greif
a9fbbe2dbb cache result of operator* 
llvm-svn: 107968
 2010-07-09 14:29:14 +00:00
Gabor Greif
a5fdd0955d cache result of operator* 
llvm-svn: 107966
 2010-07-09 14:18:23 +00:00
Gabor Greif
cda479a708 cache operator*'s result (in multiple functions) 
llvm-svn: 107965
 2010-07-09 14:02:13 +00:00
Devang Patel
1c47157b66 MDString is already checked earlier. 
llvm-svn: 107516
 2010-07-02 21:13:23 +00:00
Jim Grosbach
f5a790e251 lowerinvoke needs to handle aggregate function args like sjlj eh does. 
llvm-svn: 107335
 2010-06-30 22:22:59 +00:00
Gabor Greif
a77e545e60 use getArgOperand instead of getOperand 
llvm-svn: 107269
 2010-06-30 09:14:26 +00:00
Gabor Greif
98947dcd6d use CallInst::ArgOffset 
llvm-svn: 107003
 2010-06-28 12:30:07 +00:00
Gabor Greif
1c2bae559b use ArgOperand API and CallInst::ArgOffset 
llvm-svn: 107002
 2010-06-28 12:29:20 +00:00
Dale Johannesen
b1fc776fca 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
42cbeeeb2e use ArgOperand API (one more hunk I could split) 
llvm-svn: 106825
 2010-06-25 07:58:41 +00:00
Gabor Greif
d2559bceee use ArgOperand API (some hunks I could split) 
llvm-svn: 106824
 2010-06-25 07:57:14 +00:00
Gabor Greif
14afc1e2d9 use callsite to obtain all arguments 
llvm-svn: 106728
 2010-06-24 09:56:43 +00:00
Devang Patel
0c927a80fe 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
ad744f3fa3 Use available typedef for " DenseMap<const Value*, Value*>". 
llvm-svn: 106699
 2010-06-24 00:00:42 +00:00
Devang Patel
373b10cbaa Cosmetic change. 
Do not use "ValueMap" as a name for a local variable or an argument.

llvm-svn: 106698
 2010-06-23 23:55:51 +00:00
Devang Patel
1967a51efc Revert 106592 for now. It causes clang-selfhost build failure. 
llvm-svn: 106598
 2010-06-22 23:29:55 +00:00
Devang Patel
a24bf5907c If a metadata operand is seeded in value map and the metadata should also be seeded in value map. This is not limited to function local metadata. 
Failure to seed metdata in such cases causes troubles when in a cloned module, metadata from a new module refers to values in old module. Usually this results in mysterious bugpoint crashes. For example,

 Checking to see if we can delete global inits: Unknown constant!
 UNREACHABLE executed at /d/g/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp:904!

llvm-svn: 106592
 2010-06-22 22:53:21 +00:00