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4487 Commits

Author SHA1 Message Date
Evan Cheng 25dd4a2daf Commit CodeGenPrepare.cpp changes which was accidentially left out of 56526. 
llvm-svn: 56549
 2008-09-24 06:48:55 +00:00
Eric Christopher c1ea149dcd Fix fallout in CodeGenPrepare from 56526. Will likely need more work. 
llvm-svn: 56546
 2008-09-24 05:32:41 +00:00
Devang Patel 6402c7236f s/ParamAttrsWithIndex/FnAttributeWithIndex/g 
llvm-svn: 56535
 2008-09-24 00:55:02 +00:00
Devang Patel e15607b7bb Put FN_NOTE_AlwaysInline and others in FnAttr namespace. 
llvm-svn: 56527
 2008-09-24 00:06:15 +00:00
Devang Patel e87abd26ba Move FN_NOTE_AlwaysInline and other out of ParamAttrs namespace. 
Do not check isDeclaration() in hasNote(). It is clients' responsibility.

llvm-svn: 56524
 2008-09-23 23:52:03 +00:00
Devang Patel ba3fa6c6e1 s/ParameterAttributes/Attributes/g 
llvm-svn: 56513
 2008-09-23 23:03:40 +00:00
Devang Patel 82fed6702b Use parameter attribute store (soon to be renamed) for 
Function Notes also. Function notes are stored at index ~0.

llvm-svn: 56511
 2008-09-23 22:35:17 +00:00
Devang Patel 329fe728b5 Add hasNote() to check note associated with a function. 
llvm-svn: 56477
 2008-09-22 22:32:29 +00:00
Oscar Fuentes a229b3c9a7 Initial support for the CMake build system. 
llvm-svn: 56419
 2008-09-22 01:08:49 +00:00
Duncan Sands e1dc84be64 Implement review feedback from Devang: make use 
of mayReadFromMemory and mayWriteToMemory.

llvm-svn: 56387
 2008-09-20 16:45:58 +00:00
Duncan Sands 310077034a Remove the MarkModRef pass (use AddReadAttrs instead). 
Unfortunately this means removing one regression test
of GlobalsModRef because I couldn't work out how to
perform it without MarkModRef.

llvm-svn: 56342
 2008-09-19 08:23:44 +00:00
Duncan Sands af25ee7ffc Add a new pass AddReadAttrs which works out which functions 
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.

llvm-svn: 56341
 2008-09-19 08:17:05 +00:00
Devang Patel c25be3b2de splitLoop does not handle split condition EQ. 
Fixes PR 2805

llvm-svn: 56321
 2008-09-18 23:45:14 +00:00
Bill Wendling a00fa322b1 Decrementing the iterator here could be wrong if the worklist is empty after the "erase". 
Thanks to Ji Young Park for the patch!

llvm-svn: 56316
 2008-09-18 23:04:18 +00:00
Devang Patel 76b22c1420 Try to place hoisted instructions befoe icmp instruction. 
llvm-svn: 56315
 2008-09-18 22:50:42 +00:00
Devang Patel 7f9671ba37 Do not hoist instruction above branch condition. The instruction may use branch condition. 
llvm-svn: 56286
 2008-09-17 18:21:49 +00:00
Devang Patel dca8d3b183 Do not ignore iv uses outside the loop. 
This one slipped through cracks very well.

llvm-svn: 56284
 2008-09-17 17:53:47 +00:00
Dan Gohman dafa9c6e85 Improve instcombine's handling of integer min and max in two ways: 
- Recognize expressions like "x > -1 ? x : 0" as min/max and turn them
   into expressions like "x < 0 ? 0 : x", which is easily recognizable
   as a min/max operation.
 - Refrain from folding expression like "y/2 < 1" to "y < 2" when the
   comparison is being used as part of a min or max idiom, like
   "y/2 < 1 ? 1 : y/2". In that case, the division has another use, so
   folding doesn't eliminate it, and obfuscates the min/max, making it
   harder to recognize as a min/max operation.

These benefit ScalarEvolution, CodeGen, and anything else that wants to
recognize integer min and max.

llvm-svn: 56246
 2008-09-16 18:46:06 +00:00
Dan Gohman 68e7735a38 Teach LSR to optimize away SMAX operations for tripcounts in common 
cases.  See the comment above OptimizeSMax for the full story, and
the testcase for an example. This cancels out a pessimization
commonly attributed to indvars, and will allow us to lift some of
the artificial throttles in indvars, rather than add new ones.

llvm-svn: 56230
 2008-09-15 21:22:06 +00:00
Dan Gohman eff71f2953 On 64-bit targets, change 32-bit getelementptr indices to be 64-bit 
getelementptr indices, inserting an explicit cast if necessary.
This helps expose the sign-extension operation to other optimizations.

llvm-svn: 56133
 2008-09-11 23:06:38 +00:00
Dan Gohman 7d01c0654c Fix a vectorshuffle instcombine bug introduced by r55995. 
Patch by Nicolas Capens!

llvm-svn: 56129
 2008-09-11 22:47:57 +00:00
Dan Gohman 9b9d547a5c Fix a copy+paste bug that Duncan spotted. For several 
cases it was still getting lucky and detecting overflow
but it was clearly incorrect.

llvm-svn: 56113
 2008-09-11 18:53:02 +00:00
Dan Gohman 9d9a4be588 In my analysis for r56076 I missed the case where the original 
multiplication overflows.

llvm-svn: 56082
 2008-09-11 00:25:00 +00:00
Dan Gohman c1ae01688f Fix an icmp+sdiv optimization to check for and handle an overflow 
condition. This fixes PR2740.

llvm-svn: 56076
 2008-09-10 23:30:57 +00:00
Devang Patel 728c44ab56 fix white spaces. 
llvm-svn: 56056
 2008-09-10 14:49:55 +00:00
Dan Gohman 97f0a0f28d Fix a warning about comparing signed and unsigned values. 
llvm-svn: 56040
 2008-09-10 01:09:32 +00:00
Devang Patel 92b032f3e6 if loop induction variable is always sign or zero extended then 
extend the type of induction variable.

llvm-svn: 56017
 2008-09-09 21:41:07 +00:00
Devang Patel 92c5367705 fix overflow check. 
llvm-svn: 56011
 2008-09-09 20:54:34 +00:00
Anton Korobeynikov 1a1140429e Make safer variant of alias resolution routine to be default 
llvm-svn: 56005
 2008-09-09 20:05:04 +00:00
Anton Korobeynikov a9b60ee0fc Resolve aliases, when possible 
llvm-svn: 56001
 2008-09-09 19:04:59 +00:00
Dan Gohman 86fb5b48de Make SimplifyDemandedVectorElts simplify vectors with multiple 
users, and teach it about shufflevector instructions.

Also, fix a subtle bug in SimplifyDemandedVectorElts'
insertelement code.

This is a patch that was originally written by Eli Friedman,
with some fixes and cleanup by me.

llvm-svn: 55995
 2008-09-09 18:11:14 +00:00
Devang Patel 0f7a3507cf Fix simplifycfg crash in handing block merge. 
llvm-svn: 55971
 2008-09-09 01:06:56 +00:00
Devang Patel 3d56051f70 s/RemoveUnreachableBlocks/RemoveUnreachableBlocksFromFn/g 
llvm-svn: 55965
 2008-09-08 22:14:17 +00:00
Devang Patel 7518f250b9 Remove unused counter. 
llvm-svn: 55924
 2008-09-08 17:14:54 +00:00
Devang Patel 538a7f479a Remove OptimizeIVType() 
llvm-svn: 55913
 2008-09-08 16:13:27 +00:00
Duncan Sands b9a6f861b4 Update the callgraph correctly. 
llvm-svn: 55896
 2008-09-08 11:08:09 +00:00
Duncan Sands 3cf7d86556 Update the callgraph correctly in ArgumentPromotion. 
llvm-svn: 55895
 2008-09-08 11:07:35 +00:00
Duncan Sands 46911f1271 Reapply 55859. This doesn't change anything as 
long as the callgraph is correct.  It checks
for wrong callgraphs more strictly.

llvm-svn: 55894
 2008-09-08 11:05:51 +00:00
Duncan Sands 1ea0d2e6db Correct a comment and strip trailing whitespace. 
llvm-svn: 55883
 2008-09-07 09:54:09 +00:00
Nuno Lopes 421f488cb7 fix crash when the malloc/free function is defined or is a declaration with 0 parameters. 
this pass doesnt seem to be used, but still it's now a little more correct

llvm-svn: 55873
 2008-09-06 17:44:06 +00:00
Duncan Sands 95c2a7848a When PruneEH turned an invoke into an ordinary 
call (thus changing the call site) it didn't
inform the callgraph about this.  But the
call site does matter - as shown by the testcase,
the callgraph become invalid after the inliner
ran (with an edge between two functions simply
missing), resulting in wrong deductions by
GlobalsModRef.

llvm-svn: 55872
 2008-09-06 17:19:29 +00:00
Owen Anderson 1dd2e40521 Revert r55859. This is breaking the build in the abscence of its companion commit. 
llvm-svn: 55865
 2008-09-05 23:36:01 +00:00
Devang Patel d94269f906 Remove unused map. 
llvm-svn: 55861
 2008-09-05 21:55:33 +00:00
Duncan Sands 9e23602849 Delete the removeCallEdgeTo callgraph method, 
because it does not maintain a correct list
of callsites.  I discovered (see following
commit) that the inliner will create a wrong
callgraph if it is fed a callgraph with
correct edges but incorrect callsites.  These
were created by Prune-EH, and while it wasn't
done via removeCallEdgeTo, it could have been
done via removeCallEdgeTo, which is an accident
waiting to happen.  Use removeCallEdgeFor
instead.

llvm-svn: 55859
 2008-09-05 21:43:04 +00:00
Duncan Sands 3a52056d4d Use removeAllCalledFunctions rather than removing 
edges one by one by hand.

llvm-svn: 55836
 2008-09-05 14:56:53 +00:00
Duncan Sands 7c8fb1ad93 Remove trailing whitespace. 
llvm-svn: 55835
 2008-09-05 12:37:12 +00:00
Duncan Sands 6dd02b5219 Make this pass return that it made a change if 
it modifies a functions attributes.

llvm-svn: 55831
 2008-09-05 09:08:37 +00:00
Devang Patel 40519f0370 A loop may be unswitched multiple times. Reconstruct dom info. at the end. 
llvm-svn: 55806
 2008-09-04 22:43:59 +00:00
Devang Patel 00ec74616b Initialize loop data first. 
llvm-svn: 55792
 2008-09-04 20:36:36 +00:00
Devang Patel d52071540c Do not unswitch if the function notes say we're optimizing this function for size. 
llvm-svn: 55786
 2008-09-04 18:55:13 +00:00