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163 Commits

Author SHA1 Message Date
Devang Patel
8f9c569a13 svn mv Target/ARM/ARMGlobalMerge.cpp Transforms/Scalar/GlobalMerge.cpp 
There is no reason to have simple IR level pass in lib/Target.

llvm-svn: 142200
 2011-10-17 17:17:43 +00:00
Rafael Espindola
3bb0f9391c 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.

llvm-svn: 138841
 2011-08-30 23:03:45 +00:00
Jakub Staszak
28bcc8673e Introduce "expect" intrinsic instructions. 
llvm-svn: 134516
 2011-07-06 18:22:43 +00:00
John McCall
519c63cdeb The ARC language-specific optimizer. Credit to Dan Gohman. 
llvm-svn: 133108
 2011-06-15 23:37:01 +00:00
Junjie Gu
920274b4dd 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.

llvm-svn: 129449
 2011-04-13 16:15:29 +00:00
Dan Gohman
db646bfdad Delete the SimplifyHalfPowrLibCalls pass, which was unused, and 
only existed as the result of a misunderstanding.

llvm-svn: 126669
 2011-02-28 19:41:14 +00:00
Cameron Zwarich
e39e476305 Remove outdated references to dominance frontiers. 
llvm-svn: 123724
 2011-01-18 03:53:26 +00:00
Chris Lattner
8e171470d3 split SROA into two passes: one that uses DomFrontiers (-scalarrepl) 
and one that uses SSAUpdater (-scalarrepl-ssa)

llvm-svn: 123436
 2011-01-14 08:13:00 +00:00
Cameron Zwarich
a4f2efdd41 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.

llvm-svn: 122719
 2011-01-03 00:25:16 +00:00
Chris Lattner
688675a0be sketch out a new early cse pass. No functionality yet. 
llvm-svn: 122713
 2011-01-02 21:47:05 +00:00
Chris Lattner
e210c31646 Start of a pass for recognizing memset and memcpy idioms. 
No functionality yet.

llvm-svn: 122562
 2010-12-26 19:32:44 +00:00
Duncan Sands
09fbb211eb 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.

llvm-svn: 122264
 2010-12-20 20:54:37 +00:00
Devang Patel
35201e0fd6 Remove LoopIndexSplit pass. It is neither maintained nor used by anyone. 
llvm-svn: 116004
 2010-10-07 23:29:37 +00:00
Owen Anderson
ccaee65189 Rename ValuePropagation to a more descriptive CorrelatedValuePropagation. 
llvm-svn: 112591
 2010-08-31 07:48:34 +00:00
Chris Lattner
4b49ada02c 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.

llvm-svn: 112355
 2010-08-28 03:51:24 +00:00
Owen Anderson
dc4703bcd5 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.

llvm-svn: 112325
 2010-08-27 23:31:36 +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
Peter Collingbourne
10c4f9d6bd Add an atomic lowering pass 
llvm-svn: 110113
 2010-08-03 16:19:16 +00:00
Dan Gohman
1512bd9998 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.

llvm-svn: 103257
 2010-05-07 15:40:13 +00:00
Chris Lattner
2ceb31a172 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!

llvm-svn: 102402
 2010-04-26 23:49:32 +00:00
Owen Anderson
73c74b3153 SCCVN, we hardly knew ye! 
llvm-svn: 101117
 2010-04-13 05:24:08 +00:00
Bob Wilson
6d8360b3d8 Revert r97245 which seems to be causing performance problems. 
llvm-svn: 97366
 2010-02-28 05:34:05 +00:00
Bob Wilson
139fdbd4d2 Move the EnableFullLoadPRE flag from a separate command-line option to an 
argument of createGVNPass and set it automatically for -O3.

llvm-svn: 97245
 2010-02-26 19:09:47 +00:00
Bob Wilson
cf20a07501 Remove unused "NoPRE" parameter in GVN and createGVNPass(). 
llvm-svn: 97235
 2010-02-26 18:35:19 +00:00
Eric Christopher
871cf7bce2 Pull these back out, they're a little too aggressive and time 
consuming for a simple optimization.

llvm-svn: 95671
 2010-02-09 17:29:18 +00:00
Eric Christopher
428b385575 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.

llvm-svn: 95628
 2010-02-09 00:35:38 +00:00
Dan Gohman
406baaac43 Add an option for running GVN with redundant load processing disabled. 
llvm-svn: 88742
 2009-11-14 02:27:51 +00:00
Chris Lattner
36009e416c remove the now dead condprop pass, PR3906. 
llvm-svn: 86810
 2009-11-11 05:56:35 +00:00
Dan Gohman
04c536dff6 Remove CodeGenLICM. It's largely obsoleted by MachineLICM's new ability 
to unfold loop-invariant loads.

llvm-svn: 85657
 2009-10-31 14:35:41 +00:00
Evan Cheng
8db8f72185 Add option to createGVNPass to disable PRE. 
llvm-svn: 85609
 2009-10-30 20:12:24 +00:00
Nick Lewycky
0376e34268 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!

llvm-svn: 85382
 2009-10-28 07:03:15 +00:00
Owen Anderson
646c3e1e3d Forgot to commit these. 
llvm-svn: 85180
 2009-10-26 23:56:52 +00:00
Victor Hernandez
673c036bc7 Remove FreeInst. 
Remove LowerAllocations pass.
Update some more passes to treate free calls just like they were treating FreeInst.

llvm-svn: 85176
 2009-10-26 23:43:48 +00:00
Dan Gohman
05a91cc09f 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.

llvm-svn: 85144
 2009-10-26 19:12:14 +00:00
Victor Hernandez
a25a2890fa Remove MallocInst from LLVM Instructions. 
llvm-svn: 84299
 2009-10-17 01:18:07 +00:00
Chris Lattner
e87add4b88 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.

llvm-svn: 83390
 2009-10-06 16:59:46 +00:00
Chris Lattner
857ed445a8 remove the GVNPRE pass. It has been subsumed by the GVN pass. 
Ok'd by Owen.

llvm-svn: 83193
 2009-10-01 02:18:36 +00:00
Dan Gohman
f31dae3931 Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass. 
llvm-svn: 82990
 2009-09-28 14:37:51 +00:00
Dan Gohman
752227ef24 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.

llvm-svn: 82076
 2009-09-16 20:25:11 +00:00
Dan Gohman
cb1390f7ed Update comments to new-style syntax. 
llvm-svn: 77079
 2009-07-25 16:03:55 +00:00
Nick Lewycky
98ec5dd5cc Forgot a couple files when adding the -ssi-everything pass. 
llvm-svn: 75136
 2009-07-09 15:33:55 +00:00
Nick Lewycky
b01a2dc7ba 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.

llvm-svn: 74780
 2009-07-03 19:28:36 +00:00
Dan Gohman
111f127d23 Fix old-style type names in comments. 
llvm-svn: 73362
 2009-06-14 23:30:43 +00:00
Dan Gohman
c162a200ad Add a new pass to simplify specific half_powr function calls. This is 
a specialized pass that it not likely to be generally useful.

llvm-svn: 58732
 2008-11-04 23:41:45 +00:00
Torok Edwin
0c0acebd09 export an ID for the instructionNamer, allowing analysis/transformation passes 
that need it to require it by ID.

llvm-svn: 58238
 2008-10-27 10:16:27 +00:00
Daniel Dunbar
5447f9679d Change create*Pass factory functions to return Pass* instead of 
LoopPass*.
 - Although less precise, this means they can be used in clients
   without RTTI (who would otherwise need to include LoopPass.h, which
   eventually includes things using dynamic_cast). This was the
   simplest solution that presented itself, but I am happy to use a
   better one if available.

llvm-svn: 58010
 2008-10-22 23:32:42 +00:00
Duncan Sands
b2b5ddfaf6 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