Commit Graph

42 Commits

Author SHA1 Message Date
Nadav Rotem
6bed58ef24 Add a cost model analysis that allows us to estimate the cost of IR-level instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167324 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-02 21:48:17 +00:00
Benjamin Kramer
b8b3f6081f Remove LoopDependenceAnalysis.
It was unmaintained and not much more than a stub. The new DependenceAnalysis
pass is both more general and complete.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166810 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-26 20:25:01 +00:00
NAKAMURA Takumi
54d2d2bbe9 llvm/Analysis/Passes.h: Fix copypasto in createDependenceAnalysisPass().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165709 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 08:26:52 +00:00
Sebastian Pop
ad43499fc4 dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.

This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.

It's a fairly complete implementation of the paper

    Practical Dependence Testing
    Gina Goff, Ken Kennedy, and Chau-Wen Tseng
    PLDI 1991

It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).

It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.

Included in the patch file are many test cases, commented with C code showing
the loops and array references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
Manman Ren
d26200423e Profile: set branch weight metadata with data generated from profiling.
This patch implements ProfileDataLoader which loads profile data generated by
-insert-edge-profiling and updates branch weight metadata accordingly.

Patch by Alastair Murray.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162799 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-28 22:21:25 +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
Dan Gohman
c92383fd0d Delete the LiveValues pass. I won't get get back to the project it
was started for in the foreseeable future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126668 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28 19:37:59 +00:00
Andrew Trick
04317cc618 Implementation of path profiling.
Modified patch by Adam Preuss.

This builds on the existing framework for block tracing, edge profiling and optimal edge profiling.
See -help-hidden for new flags.
For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-29 01:09:53 +00:00
Dan Gohman
db4708cf86 Move NoAA out of BasicAliasAnalysis.cpp into its own file, now that
it doesn't have a special relationship with BasicAliasAnalysis
anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-19 23:09:08 +00:00
Dan Gohman
ead0109f5b Add a pass which prints out all the memdep dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114121 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16 22:08:32 +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
Dan Gohman
c182cb5784 Sketch up a preliminary Type-Based Alias Analysis implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110077 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02 23:11:01 +00:00
Tobias Grosser
f96b006367 Add new RegionInfo pass.
The RegionInfo pass detects single entry single exit regions in a function,
where a region is defined as any subgraph that is connected to the remaining
graph at only two spots.
Furthermore an hierarchical region tree is built.
Use it by calling "opt -regions analyze" or "opt -view-regions".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22 07:46:31 +00:00
Dan Gohman
9e86f4364b Remove interprocedural-basic-aa and associated code. The AliasAnalysis
interface needs implementations to be consistent, so any code which
wants to support different semantics must use a different interface.
It's not currently worthwhile to add a new interface for this new
concept.

Document that AliasAnalysis doesn't support cross-function queries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107776 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07 14:27:09 +00:00
Dan Gohman
43b8fd728b Document that BasicAA respects noalias, while InterproceduralBasicAA
does not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107546 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02 23:52:36 +00:00
Dan Gohman
6be2bd516a Add an Intraprocedural form of BasicAliasAnalysis, which aims to
properly handles instructions and arguments defined in different
functions, or across recursive function iterations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107109 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29 00:50:39 +00:00
Dan Gohman
8d121694a3 Generalize AAEval so that it can be used both per-function and
interprocedurally. Note that as of this writing, existing alias
analysis passes are not prepared to be used interprocedurally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107013 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-28 16:01:37 +00:00
Dan Gohman
ef0b14593b Add a simple module-level debug info printer. It just sets up a
DebugInfoFinder and iterates over all the contents calling print.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103262 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07 16:22:32 +00:00
Chris Lattner
a9cf19670f remove anders-aa from mainline, it isn't maintained and is
tantalyzing enough that people keep trying to use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97483 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:24:17 +00:00
Andreas Neustifter
44299c9507 Use ProfileInfo-API in ProfileInfo Loader and do more assertions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-03 11:00:37 +00:00
Chris Lattner
10f2d13d58 Stub out a new lazy value info pass, which will eventually
vend value constraint information to the optimizer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86767 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-11 00:22:30 +00:00
Douglas Gregor
076124ef26 Reverting 85714, 85715, 85716, which are breaking the build
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85717 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 16:42:53 +00:00
Dan Gohman
2166f62290 Add a function to Passes.h to allow clients to create instances
of the ScalarEvolution pass without needing to #include ScalarEvolution.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01 15:28:36 +00:00
Andreas Neustifter
e7ddcfdebe Preparation for Optimal Edge Profiling:
This adds a pass to verify the current profile against the flow conditions.
This is very helpful when later on trying to perserve the profiling information
during all passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-01 08:48:42 +00:00
Dan Gohman
2385e0e22c Create a ScalarEvolution-based AliasAnalysis implementation.
This is a simple AliasAnalysis implementation which works by making
ScalarEvolution queries. ScalarEvolution has a more complete understanding
of arithmetic than BasicAA's collection of ad-hoc checks, so it handles
some cases that BasicAA misses, for example p[i] and p[i+1] within the
same iteration of a loop.

This is currently experimental. It may be that the main use for this pass
will be to help find cases where BasicAA can be profitably extended, or
to help in the development of the overall AliasAnalysis infrastructure,
however it's also possible that it could grow up to become a directly
useful pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26 14:53:06 +00:00
Daniel Dunbar
55e354ac0e Add a basic static ProfileInfo provider (ProfileEstimatorPass).
- Part of optimal static profiling patch sequence by Andreas Neustifter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78484 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08 18:44:18 +00:00
Andreas Bolka
cb21010fa0 Scaffolding for LDA pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74120 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24 21:29:13 +00:00
Dan Gohman
3751f564e3 Add a liveness analysis pass for LLVM IR values. This computes
the set of blocks in which values are used, the set in which
values are live-through, and the set in which values are
killed. For the live-through and killed sets, conservative
approximations are used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67309 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19 17:29:04 +00:00
Torok Edwin
6e68106a47 Add -print-dbginfo pass that prints LLVM IR with comments inserted to show
which source/line a certain BB/instruction comes from, original variable names,
and original (unmangled) C++ name of functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61085 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-16 09:09:19 +00:00
Owen Anderson
3688f268cb Remove GCSE, ValueNumbering, and LoadValueNumbering. These have been deprecated for almost a year; it's finally time for them to go away.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54822 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-15 21:31:02 +00:00
Chris Lattner
029840c935 Add a new LibCallAliasAnalysis pass, which is parameterized
by an instance of LibCallInfo to provide mod/ref info of
standard library functions.  This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50827 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-07 19:53:05 +00:00
Chris Lattner
7ed47a1335 Don't attribute in file headers anymore. See llvmdev for the
discussion of this change.  Boy are my fingers tired. ;-)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45411 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 19:59:42 +00:00
Andrew Lenharth
472c7918b0 A shim over other AA impls to catch incorrect uses
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31724 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-14 05:21:04 +00:00
Chris Lattner
d5bc0e5f9c add a proto
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23923 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-24 01:00:32 +00:00
Misha Brukman
9769ab2226 Remove trailing whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21408 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 20:19:05 +00:00
Jeff Cohen
a5ba89421e Get VC++ compiling again
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19869 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 07:29:32 +00:00
Jeff Cohen
6e400f76e6 Apply feed back from Chris:
1. Rename createLoaderPass to CreateProfileLoaderPass
  2. Opt shouldn't use the pass registered in CodeGen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19431 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 03:56:27 +00:00
Jeff Cohen
1d7b5de7ee Add last four createXxxPass functions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19424 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:42:52 +00:00
Jeff Cohen
534927d82d Add even more missing createXxxPass functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19402 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 22:01:16 +00:00
Chris Lattner
15fde2eb83 Add new header
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14461 91177308-0d34-0410-b5e6-96231b3b80d8
2004-06-28 06:31:26 +00:00