9 Commits

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	161c9081e5	Do not use negative option name ... Instead of -polly-no-tiling, we use -polly-tiling=false to disable tiling. llvm-svn: 245423	2015-08-19 08:22:06 +00:00
Tobias Grosser	4f6bceface	Do not scale tile loops ... We now generate tile loops as: for (int c1 = 0; c1 <= 47; c1 += 1) for (int c2 = 0; c2 <= 47; c2 += 1) for (int c3 = 0; c3 <= 31; c3 += 1) for (int c4 = 0; c4 <= 31; c4 += 4) #pragma simd for (int c5 = c4; c5 <= c4 + 3; c5 += 1) Stmt_for_body3(32 * c1 + c3, 32 * c2 + c5); instead of for (int c1 = 0; c1 <= 1535; c1 += 32) for (int c2 = 0; c2 <= 1535; c2 += 32) for (int c3 = 0; c3 <= 31; c3 += 1) for (int c4 = 0; c4 <= 31; c4 += 4) #pragma simd for (int c5 = c4; c5 <= c4 + 3; c5 += 1) Stmt_for_body3(c1 + c3, c2 + c5); Run-time performance-wise this makes little difference, but this gives a large reduction in compile time (10-30% on 17 LNT benchmarks). Apparently the isl AST generator is not yet very efficient in generating the latter. llvm-svn: 233675	2015-03-31 07:52:36 +00:00
Tobias Grosser	bbb4cec2e8	Use schedule trees to perform post-scheduling transformations ... Replacing the old band_tree based code with code that is based on the new schedule tree [1] interface makes applying complex schedule transformations a lot more straightforward. We now do not need to reason about the meaning of flat schedules, but can use a more straightforward tree structure. We do not yet exploit this a lot in the current code, but hopefully we will be able to do so soon. This change also allows us to drop some code, as isl now provides some higher level interfaces to apply loop transformations such as tiling. This change causes some small test case changes as isl uses a slightly different way to perform loop tiling, but no significant functional changes are intended. [1] http://impact.gforge.inria.fr/impact2014/papers/impact2014-verdoolaege.pdf llvm-svn: 232911	2015-03-22 12:06:39 +00:00
Tobias Grosser	9715b7c592	Add forgotten 'FileCheck' to tiling test cases ... These test cases did not verify the CHECK lines at all. We add the FileCheck and also fix some broken CHECK lines. Being here, we extend the checks to cover the whole loop structure. llvm-svn: 232710	2015-03-19 07:39:34 +00:00
David Blaikie	bad3ff207f	Update Polly tests to handle explicitly typed gep changes in LLVM ... llvm-svn: 230784	2015-02-27 19:20:19 +00:00
Tobias Grosser	d1e33e7061	ScopDetection: Only detect scops that have at least one read and one write ... Scops that only read seem generally uninteresting and scops that only write are most likely initializations where there is also little to optimize. To not waste compile time we bail early. Differential Revision: http://reviews.llvm.org/D7735 llvm-svn: 229820	2015-02-19 05:31:07 +00:00
Tobias Grosser	e7e33ba13a	Always pipe in test files ... In Polly we used to have a mix of test cases, some that used 'opt %s' and others that used 'opt < %s'. We now change all to use 'opt < %s'. Piping in test files is preferable as it does prevent temporary files to be written to disk. This brings us in line with what is usus in LLVM. llvm-svn: 216816	2014-08-30 09:15:04 +00:00
Johannes Doerfert	c3958b214c	Added option for n-dimensional rectangular tiling ... + CL-option --polly-tile-sizes=<int,...,int> The i'th value is used as a tile size for dimension i, if there is no i'th value, the value of --polly-default-tile-size is used + CL-option --polly-default-tile-size=int Used if no tile size is given for a dimension i + 3 Simple testcases llvm-svn: 209753	2014-05-28 17:21:02 +00:00