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llvm-project/polly
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Michael Kruse 82a1c7de09 Make TempScopInfo a RegionPass 
This modifies the order in which Polly passes are executed.

Assuming a function has two scops (A and B), the order before was:

FunctionPassManager
  ScopDetection
  IndependentBlocks
  TempScopInfo for A and B
  RegionPassManager
    ScopInfo for A
    DependenceInfo for A
    IslScheduleOptimizer for A
    IslAstInfo for A
    CodeGeneration for A
    ScopInfo for B
    DependenceInfo for B
    IslScheduleOptimizer for B
    IslAstInfo for B
    CodeGeneration for B

After this patch:

FunctionPassManager
  ScopDetection
  IndependentBlocks
  RegionPassManager
    TempScopInfo for A
    ScopInfo for A
    DependenceInfo for A
    IslScheduleOptimizer for A
    IslAstInfo for A
    CodeGeneration for A
    TempScopInfo for B
    ScopInfo for B
    DependenceInfo for B
    IslScheduleOptimizer for B
    IslAstInfo for B
    CodeGeneration for B

TempScopInfo for B might store information and references to the IR
that CodeGeneration for A might modify. Changing the order ensures that
the IR is not modified from the analysis of a region until code
generation.

Reviewers: grosser

Differential Revision: http://reviews.llvm.org/D12014

llvm-svn: 245091
 		2015-08-14 20:10:27 +00:00
..
autoconf Enable ISL's small integer optimization 2015-06-25 20:47:35 +00:00
cmake Unify FOLDER property of Polly targets 2015-07-21 12:40:01 +00:00
include/polly Make TempScopInfo a RegionPass 2015-08-14 20:10:27 +00:00
lib Make TempScopInfo a RegionPass 2015-08-14 20:10:27 +00:00
test Fix test case after recent LLVM changes 2015-08-13 21:08:15 +00:00
tools Do not compile GPU library with sanitizers 2015-07-28 12:51:23 +00:00
utils Make arc unit work with ninja builds 2015-08-12 09:02:20 +00:00
www Update links to lists.llvm.org. 2015-08-05 04:19:04 +00:00
.arcconfig Adjusted arc linter config for modern version of arcanist 2015-08-12 09:01:16 +00:00
.arclint Adjusted arc linter config for modern version of arcanist 2015-08-12 09:01:16 +00:00
.gitattributes gitattributes: .png and .txt are no text files 2013-07-28 09:05:20 +00:00
.gitignore Add git patch files to .gitignore 2015-06-23 20:55:01 +00:00
CMakeLists.txt Do not use -fvisibility option with Visual C 2015-08-07 22:16:44 +00:00
CREDITS.txt Add myself to the credits 2014-08-10 03:37:29 +00:00
LICENSE.txt Update the copyright credits -- Happy new year 2014! 2014-01-01 08:27:31 +00:00
Makefile Revert "Fix a bug introduced by r153739: We are not able to provide the correct" 2012-04-11 07:43:13 +00:00
Makefile.common.in 'chmod -x' on files that do not need the executable bits 2012-12-29 15:09:03 +00:00
Makefile.config.in Fix autotools build 2015-06-25 16:50:13 +00:00
README Trivial change to the README, mainly to test commit access. 2012-10-09 04:59:42 +00:00
configure Enable ISL's small integer optimization 2015-06-25 20:47:35 +00:00

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.