Commit Graph

11 Commits

Author SHA1 Message Date
George Burgess IV c6526176cf Revert r332657: "[AA] cfl-anders-aa with field sensitivity"
I don't believe the person who LGTMed this review has appropriate
context on this code. I apologize if I'm wrong.

llvm-svn: 332674
2018-05-17 21:56:39 +00:00
David Bolvansky b1c59e3f30 [AA] cfl-anders-aa with field sensitivity
Summary:
There was some unfinished work started for offset tracking in CFLGraph by the author of implementation of Andersen algorithm. This work was completed and support for field sensitivity was added to the core of Andersen algorithm.

The performance results seem promising.

SPEC2006 int_base score was increased by 1.1 % (I  compared clang 6.0 with clang 6.0 with this patch). The avergae compile time was increased by +- 1 % according my measures with small and medium C/C++ projects (I did not tested it on the large projects with milions of lines of code)

Reviewers: chandlerc, george.burgess.iv, rja

Reviewed By: rja

Subscribers: rja, llvm-commits

Differential Revision: https://reviews.llvm.org/D46282

llvm-svn: 332657
2018-05-17 20:23:33 +00:00
Vedant Kumar 1a8456da17 Fix more spelling mistakes in comments of LLVM Analysis passes
Patch by Reshabh Sharma!

Differential Revision: https://reviews.llvm.org/D43939

llvm-svn: 326601
2018-03-02 18:57:02 +00:00
George Burgess IV 381fc0ee3c Make some LLVM_CONSTEXPR variables const. NFC.
This patch changes LLVM_CONSTEXPR variable declarations to const
variable declarations, since LLVM_CONSTEXPR expands to nothing if the
current compiler doesn't support constexpr. In all of the changed
cases, it looks like the code intended the variable to be const instead
of sometimes-constexpr sometimes-not.

llvm-svn: 279696
2016-08-25 01:05:08 +00:00
George Burgess IV 4ec1753ff4 [CFLAA] Add more offset-sensitivity tracking.
This patch teaches FunctionInfo about offsets.

Like the last patch, this one doesn't introduce any visible
functionality change (the core algorithm knows nothing about offsets;
they're just plumbed through). Tests will come when we start acting
differently because of the offsets.

Patch by Jia Chen.

(N.B. I made a tiny change to Jia's patch to avoid warnings by GCC: I
put DenseMapInfo specializations in the `llvm` namespace. Only realized
that those appeared when compiling locally. :) )

Differential Revision: https://reviews.llvm.org/D22634

llvm-svn: 276486
2016-07-22 22:30:48 +00:00
George Burgess IV 3b059841ff [CFLAA] Add some interproc. analysis to CFLAnders.
This patch adds function summary support to CFLAnders. It also comes
with a lot of tests! Woohoo!

Patch by Jia Chen.

Differential Revision: https://reviews.llvm.org/D22450

llvm-svn: 276026
2016-07-19 20:47:15 +00:00
George Burgess IV 6d30aa03a0 [CFLAA] Add an initial CFLAnders implementation.
This adds an incomplete anders-style implementation for CFLAA. It's
incomplete in that it's missing interprocedural analysis, attrs
handling, etc. and that it needs more tests. More tests and features
will be added in future commits.

Patch by Jia Chen.

Differential Revision: https://reviews.llvm.org/D22291

llvm-svn: 275602
2016-07-15 19:53:25 +00:00
George Burgess IV de1be7171a [CFLAA] Simplify CFLGraphBuilder. NFC.
This patch simplifies the graph builder by encoding nodes as {Value,
Dereference Level} pairs. This lets us kill edge types, and allows us to
get rid of hacks in StratifiedSets (like addAttrsBelow/...). This
simplification also allows us to remove InstantiatedRelations and
InstantiatedAttrs.

Patch by Jia Chen.

Differential Revision: http://reviews.llvm.org/D22080

llvm-svn: 275122
2016-07-11 22:59:09 +00:00
George Burgess IV 53b195c39c [CFLAA] Make a constant variable `const`. NFC.
`const` was dropped by r274958, and the lack of `const` makes GCC6
(correctly) complain.

llvm-svn: 274961
2016-07-09 03:21:25 +00:00
George Burgess IV c294d0dcc2 [CFLAA] Move the graph builder out from CFLSteens. NFC.
Patch by Jia Chen.

Differential Revision: http://reviews.llvm.org/D22022

llvm-svn: 274958
2016-07-09 02:54:42 +00:00
George Burgess IV e191996a57 [CFLAA] Split out more things from CFLSteens. NFC.
"More things" = StratifiedAttrs and various bits like interprocedural
summaries.

Patch by Jia Chen.

Differential Revision: http://reviews.llvm.org/D21964

llvm-svn: 274592
2016-07-06 00:47:21 +00:00