llvm-project

Commit Graph

Author	SHA1	Message	Date
Tobias Grosser	f4ee371e60	tests: Drop -polly-detect-unprofitable and -polly-no-early-exit These flags are now always passed to all tests and need to be disabled if not needed. Disabling these flags, rather than passing them to almost all tests, significantly simplfies our RUN: lines. llvm-svn: 249422	2015-10-06 15:36:44 +00:00
Tobias Grosser	ed21a1fc7e	Do not detect Scops with only one loop. If a region does not have more than one loop, we do not identify it as a Scop in ScopDetection. The main optimizations Polly is currently performing (tiling, preparation for outer-loop vectorization and loop fusion) are unlikely to have a positive impact on individual loops. In some cases, Polly's run-time alias checks or conditional hoisting may still have a positive impact, but those are mostly enabling transformations which LLVM already performs for individual loops. As we do not focus on individual loops, we leave them untouched to not introduce compile time regressions and execution time noise. This results in good compile time reduction (oourafft: -73.99%, smg2000: -56.25%). Contributed-by: Pratik Bhatu <cs12b1010@iith.ac.in> Reviewers: grosser Differential Revision: http://reviews.llvm.org/D12268 llvm-svn: 246161	2015-08-27 16:55:18 +00:00
Roman Gareev	c49724f008	Manually check a loop form Add manual check of a loop form and return non-negative number of iterations in case of trivially vectorizable loop. llvm-svn: 245680	2015-08-21 09:08:14 +00:00

Author

SHA1

Message

Date

Tobias Grosser

f4ee371e60

tests: Drop -polly-detect-unprofitable and -polly-no-early-exit

These flags are now always passed to all tests and need to be disabled if
not needed. Disabling these flags, rather than passing them to almost all
tests, significantly simplfies our RUN: lines.

llvm-svn: 249422

2015-10-06 15:36:44 +00:00

Tobias Grosser

ed21a1fc7e

Do not detect Scops with only one loop.

If a region does not have more than one loop, we do not identify it as
a Scop in ScopDetection. The main optimizations Polly is currently performing
(tiling, preparation for outer-loop vectorization and loop fusion) are unlikely
to have a positive impact on individual loops. In some cases, Polly's run-time
alias checks or conditional hoisting may still have a positive impact, but those
are mostly enabling transformations which LLVM already performs for individual
loops. As we do not focus on individual loops, we leave them untouched to not
introduce compile time regressions and execution time noise. This results in
good compile time reduction (oourafft: -73.99%, smg2000: -56.25%).

Contributed-by: Pratik Bhatu <cs12b1010@iith.ac.in>

Reviewers: grosser

Differential Revision: http://reviews.llvm.org/D12268

llvm-svn: 246161

2015-08-27 16:55:18 +00:00

Roman Gareev

c49724f008

Manually check a loop form

Add manual check of a loop form and return non-negative number of iterations
in case of trivially vectorizable loop.

llvm-svn: 245680

2015-08-21 09:08:14 +00:00

3 Commits