llvm-project/polly
Michael Kruse 7604d9add5 [ScopBuilder] Pass ScopStmts around instead of BasicBlocks. NFC.
During the construction of MemoryAccesses in ScopBuilder, BasicBlocks
were used in function parameters, assuming that the ScopStmt an be
directly derived from it. This won't be true anymore once we split
BasicBlocks into multiple ScopStmt. As a preparation for such a change
in the future, we instead pass the ScopStmt and avoid the use of
getStmtFor().

There are two occasions where a kind of mapping from BasicBlock to
ScopStmt is still required.

1. Get the statement representing the incoming block of a `PHINode`
   using `getLastStmtOf`.

2. One statement is required to write a scalar to be readable by those
   which need it. This is most often the statement which contains its
   definition, which we get using `getStmtFor(Instruction*)`.

Differential Revision: https://reviews.llvm.org/D34369

llvm-svn: 306132
2017-06-23 17:55:36 +00:00
..
cmake [CMake] Retire Polly's FindCUDA.cmake in favour of CMake's default FindCUDA.cmake script. 2017-06-06 19:20:48 +00:00
docs [doc] Add Davide's links regarding automated bisecting 2017-06-17 08:44:12 +00:00
include/polly [ScopBuilder] Pass ScopStmts around instead of BasicBlocks. NFC. 2017-06-23 17:55:36 +00:00
lib [ScopBuilder] Pass ScopStmts around instead of BasicBlocks. NFC. 2017-06-23 17:55:36 +00:00
test [ScopInfo] Fix crash with sum of invariant load and AddRec. 2017-06-20 22:53:02 +00:00
tools [CMake] Retire Polly's FindCUDA.cmake in favour of CMake's default FindCUDA.cmake script. 2017-06-06 19:20:48 +00:00
unittests [Polly][NewPM] Reenable ScopPassManager unittest 2017-05-23 11:28:50 +00:00
utils Revise polly-{update|check}-format targets 2015-09-14 16:59:50 +00:00
www [www] Remove outdated documentation 2017-06-12 12:21:47 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.arclint [External] Move lib/JSON to lib/External/JSON. NFC. 2017-02-05 15:26:56 +00:00
.gitattributes
.gitignore Do not track the isl PDF manual in SVN 2017-01-16 11:48:03 +00:00
CMakeLists.txt [CMake] Retire Polly's FindCUDA.cmake in favour of CMake's default FindCUDA.cmake script. 2017-06-06 19:20:48 +00:00
CREDITS.txt Add myself to the credits 2014-08-10 03:37:29 +00:00
LICENSE.txt [External] Move lib/JSON to lib/External/JSON. NFC. 2017-02-05 15:26:56 +00:00
README

README

Polly - Polyhedral optimizations for LLVM
-----------------------------------------
http://polly.llvm.org/

Polly uses a mathematical representation, the polyhedral model, to represent and
transform loops and other control flow structures. Using an abstract
representation it is possible to reason about transformations in a more general
way and to use highly optimized linear programming libraries to figure out the
optimal loop structure. These transformations can be used to do constant
propagation through arrays, remove dead loop iterations, optimize loops for
cache locality, optimize arrays, apply advanced automatic parallelization, drive
vectorization, or they can be used to do software pipelining.