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165 Commits

Author SHA1 Message Date
Dan Gohman
2f6263c96a Add a new ObjC ARC optimization pass to eliminate unneeded 
autorelease push+pop pairs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148330 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-17 20:52:24 +00:00
Eli Friedman
0572c7d31e Remove reference to dead GEPSplitterPass. PR11506. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146195 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-08 22:28:17 +00:00
Devang Patel
827454e6e2 svn mv Target/ARM/ARMGlobalMerge.cpp Transforms/Scalar/GlobalMerge.cpp 
There is no reason to have simple IR level pass in lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142200 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 17:17:43 +00:00
Rafael Espindola
f940a1a869 Remove the old tail duplication pass. It is not used and is unable to update 
ssa, so it has to be run really early in the pipeline. Any replacement
should probably use the SSAUpdater.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138841 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-30 23:03:45 +00:00
Jakub Staszak
9da9934e27 Introduce "expect" intrinsic instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134516 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 18:22:43 +00:00
John McCall
9fbd318d36 The ARC language-specific optimizer. Credit to Dan Gohman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133108 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-15 23:37:01 +00:00
Junjie Gu
32644d9bfd Passing unroll parameters (unroll-count, threshold, and partial unroll) via LoopUnroll class's ctor. Doing so 
will allow multiple context with different loop unroll parameters to run.  This is a minor change and no effect 
on existing application.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129449 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-13 16:15:29 +00:00
Dan Gohman
1551abdea6 Delete the SimplifyHalfPowrLibCalls pass, which was unused, and 
only existed as the result of a misunderstanding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126669 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-28 19:41:14 +00:00
Cameron Zwarich
b1686c32fc Remove outdated references to dominance frontiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123724 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-18 03:53:26 +00:00
Chris Lattner
b352d6eb49 split SROA into two passes: one that uses DomFrontiers (-scalarrepl) 
and one that uses SSAUpdater (-scalarrepl-ssa)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123436 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 08:13:00 +00:00
Cameron Zwarich
832f61117d Add a new loop-instsimplify pass, with the intention of replacing the instance 
of instcombine that is currently in the middle of the loop pass pipeline. This
commit only checks in the pass; it will hopefully be enabled by default later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122719 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-03 00:25:16 +00:00
Chris Lattner
12be936cc9 sketch out a new early cse pass. No functionality yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122713 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-02 21:47:05 +00:00
Chris Lattner
b0db161f5b Start of a pass for recognizing memset and memcpy idioms. 
No functionality yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122562 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 19:32:44 +00:00
Duncan Sands
43ff68ded0 Add a new convenience pass for testing InstructionSimplify. Previously 
it could only be tested indirectly, via instcombine, gvn or some other
pass that makes use of InstructionSimplify, which means that testcases
had to be carefully contrived to dance around any other transformations
that that pass did.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122264 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-20 20:54:37 +00:00
Devang Patel
d82e9e7d93 Remove LoopIndexSplit pass. It is neither maintained nor used by anyone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116004 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-07 23:29:37 +00:00
Owen Anderson
25e9405272 Rename ValuePropagation to a more descriptive CorrelatedValuePropagation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112591 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 07:48:34 +00:00
Chris Lattner
5f88af5376 remove the ABCD and SSI passes. They don't have any clients that 
I'm aware of, aren't maintained, and LVI will be replacing their value.
nlewycky approved this on irc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 03:51:24 +00:00
Owen Anderson
a0b59f6bd2 Add a prototype of a new peephole optimizing pass that uses LazyValue info to simplify PHIs and select's. 
This pass addresses the missed optimizations from PR2581 and PR4420.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 23:31:36 +00:00
Dan Gohman
60493c3f4f Eliminate PromoteMemoryToRegisterID; just use addPreserved("mem2reg") 
instead, as an example of what this looks like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110478 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 21:48:06 +00:00
Owen Anderson
90c579de5a Reapply r110396, with fixes to appease the Linux buildbot gods. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110460 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 18:33:48 +00:00
Owen Anderson
1f74590e9d Revert r110396 to fix buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-06 00:23:35 +00:00
Owen Anderson
9ccaf53ada 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110396 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-05 23:42:04 +00:00
Peter Collingbourne
3bababf880 Add an atomic lowering pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110113 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-03 16:19:16 +00:00
Dan Gohman
28a193ed8b Add an LLVM IR version of code sinking. This uses the same simple algorithm 
as MachineSink, but it isn't constrained by MachineInstr-level details.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103257 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-07 15:40:13 +00:00
Chris Lattner
c6f0aadc3b Fix a problem that lower invoke has with allocas (PR6694), and 
add a version of createLowerInvokePass that allows the client
to specify whether it wants "expensive" or "cheap" lowering.

Patch by Alex Mac!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-26 23:49:32 +00:00
Owen Anderson
fd64901579 SCCVN, we hardly knew ye! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101117 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-13 05:24:08 +00:00
Bob Wilson
b29d7d2542 Revert r97245 which seems to be causing performance problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-28 05:34:05 +00:00
Bob Wilson
8561dcd730 Move the EnableFullLoadPRE flag from a separate command-line option to an 
argument of createGVNPass and set it automatically for -O3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97245 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-26 19:09:47 +00:00
Bob Wilson
60df9077eb Remove unused "NoPRE" parameter in GVN and createGVNPass(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97235 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-26 18:35:19 +00:00
Eric Christopher
d2592ff69b Pull these back out, they're a little too aggressive and time 
consuming for a simple optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95671 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 17:29:18 +00:00
Eric Christopher
1926b648e1 Add a new pass to do llvm.objsize lowering using SCEV. 
Initial skeleton and SCEVUnknown lowering implemented,
the rest should come relatively quickly.  Move testcase
to new directory.

Move pass to right before SimplifyLibCalls - which is
moved down a bit so we can take advantage of a few opts.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95628 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-09 00:35:38 +00:00
Dan Gohman
4ec01b268e Add an option for running GVN with redundant load processing disabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88742 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 02:27:51 +00:00
Chris Lattner
f8fb7c26ee remove the now dead condprop pass, PR3906. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86810 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-11 05:56:35 +00:00
Dan Gohman
9f476e3179 Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability 
to unfold loop-invariant loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85657 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-31 14:35:41 +00:00
Evan Cheng
2f192c256c Add option to createGVNPass to disable PRE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85609 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-30 20:12:24 +00:00
Nick Lewycky
40cc524ede Add ABCD, a generalized implementation of the Elimination of Array Bounds 
Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85382 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-28 07:03:15 +00:00
Owen Anderson
8b251c25b2 Forgot to commit these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85180 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 23:56:52 +00:00
Victor Hernandez
046e78ce55 Remove FreeInst. 
Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 23:43:48 +00:00
Dan Gohman
6000e253d4 Check in the experimental GEP splitter pass. This pass splits complex 
GEPs (more than one non-zero index) into simple GEPs (at most one
non-zero index).  In some simple experiments using this it's not
uncommon to see 3% overall code size wins, because it exposes
redundancies that can be eliminated, however it's tricky to use
because instcombine aggressively undoes the work that this pass does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85144 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 19:12:14 +00:00
Victor Hernandez
a276c603b8 Remove MallocInst from LLVM Instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 01:18:07 +00:00
Chris Lattner
7963e15951 remove predicate simplifier, it never got the last bugs beaten 
out of it, and jump threading, condprop and gvn are now getting
most of the benefit.  This was approved by Nicholas and Nicolas.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83390 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-06 16:59:46 +00:00
Chris Lattner
99be299edb remove the GVNPRE pass. It has been subsumed by the GVN pass. 
Ok'd by Owen.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83193 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-01 02:18:36 +00:00
Dan Gohman
d84db11333 Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82990 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-28 14:37:51 +00:00
Dan Gohman
6f65d79750 Add a new pass for doing late hoisting of floating-point and vector 
constants out of loops. These aren't covered by the regular LICM
pass, because in LLVM IR constants don't require separate
instructions. They're not always covered by the MachineLICM pass
either, because it doesn't know how to unfold folded constant-pool
loads. This is somewhat experimental at this point, and off by
default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82076 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-16 20:25:11 +00:00
Dan Gohman
72efa18f1d Update comments to new-style syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77079 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-25 16:03:55 +00:00
Nick Lewycky
4c12ee5f61 Forgot a couple files when adding the -ssi-everything pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75136 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-09 15:33:55 +00:00
Nick Lewycky
715029478c Add Static Single Information construction pass written by André Tavares! 
Use it by requiring it through the pass manager, then calling its createSSI
method on the variables that you want in SSI form.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74780 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-03 19:28:36 +00:00
Dan Gohman
a119de86a0 Fix old-style type names in comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-14 23:30:43 +00:00
Dan Gohman
8f027c7fea Add a new pass to simplify specific half_powr function calls. This is 
a specialized pass that it not likely to be generally useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58732 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-11-04 23:41:45 +00:00
Torok Edwin
3d54502304 export an ID for the instructionNamer, allowing analysis/transformation passes 
that need it to require it by ID.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58238 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-10-27 10:16:27 +00:00