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4485 Commits

Author SHA1 Message Date
Evan Cheng
a7e6146688 Commit CodeGenPrepare.cpp changes which was accidentially left out of 56526. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56549 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-24 06:48:55 +00:00
Eric Christopher
692bf6b85e Fix fallout in CodeGenPrepare from 56526. Will likely need more work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56546 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-24 05:32:41 +00:00
Devang Patel
e3d76d37e9 s/ParamAttrsWithIndex/FnAttributeWithIndex/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56535 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-24 00:55:02 +00:00
Devang Patel
20bcaff6a7 Put FN_NOTE_AlwaysInline and others in FnAttr namespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-24 00:06:15 +00:00
Devang Patel
dd4924c564 Move FN_NOTE_AlwaysInline and other out of ParamAttrs namespace. 
Do not check isDeclaration() in hasNote(). It is clients' responsibility.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56524 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-23 23:52:03 +00:00
Devang Patel
eaf42abab6 s/ParameterAttributes/Attributes/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56513 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-23 23:03:40 +00:00
Devang Patel
d9b4a5f859 Use parameter attribute store (soon to be renamed) for 
Function Notes also. Function notes are stored at index ~0.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56511 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-23 22:35:17 +00:00
Devang Patel
f3ba70861c Add hasNote() to check note associated with a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56477 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-22 22:32:29 +00:00
Oscar Fuentes
3d01fc7de8 Initial support for the CMake build system. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-22 01:08:49 +00:00
Duncan Sands
f95f945fb0 Implement review feedback from Devang: make use 
of mayReadFromMemory and mayWriteToMemory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56387 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-20 16:45:58 +00:00
Duncan Sands
acdb2eeb45 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56342 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-19 08:23:44 +00:00
Duncan Sands
9f07a290b9 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56341 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-19 08:17:05 +00:00
Devang Patel
4fe0fe8b49 splitLoop does not handle split condition EQ. 
Fixes PR 2805


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56321 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 23:45:14 +00:00
Bill Wendling
670ed09238 Decrementing the iterator here could be wrong if the worklist is empty after the "erase". 
Thanks to Ji Young Park for the patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56316 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 23:04:18 +00:00
Devang Patel
3d0a9a371c Try to place hoisted instructions befoe icmp instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-18 22:50:42 +00:00
Devang Patel
48fbc2d39b Do not hoist instruction above branch condition. The instruction may use branch condition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56286 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-17 18:21:49 +00:00
Devang Patel
00622952ce Do not ignore iv uses outside the loop. 
This one slipped through cracks very well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56284 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-17 17:53:47 +00:00
Dan Gohman
81b28ceab6 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56246 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-16 18:46:06 +00:00
Dan Gohman
ad7321f58a 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56230 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-15 21:22:06 +00:00
Dan Gohman
4f833d4351 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56133 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 23:06:38 +00:00
Dan Gohman
3139ff8f7b Fix a vectorshuffle instcombine bug introduced by r55995. 
Patch by Nicolas Capens!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56129 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 22:47:57 +00:00
Dan Gohman
bcb37fd22f Fix a copy+paste bug that Duncan spotted. For several 
cases it was still getting lucky and detecting overflow
but it was clearly incorrect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56113 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 18:53:02 +00:00
Dan Gohman
7f85fbd9de In my analysis for r56076 I missed the case where the original 
multiplication overflows.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-11 00:25:00 +00:00
Dan Gohman
1df3fd6683 Fix an icmp+sdiv optimization to check for and handle an overflow 
condition. This fixes PR2740.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56076 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-10 23:30:57 +00:00
Devang Patel
36a5bf8fd8 fix white spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56056 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-10 14:49:55 +00:00
Dan Gohman
cb89309399 Fix a warning about comparing signed and unsigned values. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56040 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-10 01:09:32 +00:00
Devang Patel
d22a849282 if loop induction variable is always sign or zero extended then 
extend the type of induction variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56017 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 21:41:07 +00:00
Devang Patel
4b3f08bac7 fix overflow check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56011 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 20:54:34 +00:00
Anton Korobeynikov
19e861a4ff Make safer variant of alias resolution routine to be default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56005 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 20:05:04 +00:00
Anton Korobeynikov
e4c6b61ebd Resolve aliases, when possible 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 19:04:59 +00:00
Dan Gohman
488fbfc69e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55995 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 18:11:14 +00:00
Devang Patel
e435a5d937 Fix simplifycfg crash in handing block merge. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55971 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-09 01:06:56 +00:00
Devang Patel
2379089a6e s/RemoveUnreachableBlocks/RemoveUnreachableBlocksFromFn/g 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55965 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 22:14:17 +00:00
Devang Patel
245d0ab166 Remove unused counter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55924 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 17:14:54 +00:00
Devang Patel
175f9d94db Remove OptimizeIVType() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55913 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 16:13:27 +00:00
Duncan Sands
a9c3251e6b Update the callgraph correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55896 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 11:08:09 +00:00
Duncan Sands
34c8847b2d Update the callgraph correctly in ArgumentPromotion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55895 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 11:07:35 +00:00
Duncan Sands
d7b9851c4e Reapply 55859. This doesn't change anything as 
long as the callgraph is correct.  It checks
for wrong callgraphs more strictly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55894 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-08 11:05:51 +00:00
Duncan Sands
4cddaf77c4 Correct a comment and strip trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55883 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-07 09:54:09 +00:00
Nuno Lopes
b9baf31679 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55873 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-06 17:44:06 +00:00
Duncan Sands
fec2c2bf5e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55872 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-06 17:19:29 +00:00
Owen Anderson
6e6074508c Revert r55859. This is breaking the build in the abscence of its companion commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55865 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 23:36:01 +00:00
Devang Patel
bcc11d2a71 Remove unused map. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55861 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 21:55:33 +00:00
Duncan Sands
c94fe21a56 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55859 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 21:43:04 +00:00
Duncan Sands
6f0a7687ab Use removeAllCalledFunctions rather than removing 
edges one by one by hand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55836 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 14:56:53 +00:00
Duncan Sands
a7212e5826 Remove trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55835 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 12:37:12 +00:00
Duncan Sands
cae62e3498 Make this pass return that it made a change if 
it modifies a functions attributes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55831 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-05 09:08:37 +00:00
Devang Patel
deafefabae A loop may be unswitched multiple times. Reconstruct dom info. at the end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55806 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 22:43:59 +00:00
Devang Patel
027bb92541 Initialize loop data first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 20:36:36 +00:00
Devang Patel
10b359ccb6 Do not unswitch if the function notes say we're optimizing this function for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55786 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-04 18:55:13 +00:00