bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[JSON] Make the failure to parse a jscop file a hard error	Philip Pfaffe	2017-08-10	1	-1/+1
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Summary: Before, if we fail to parse a jscop file, this will be reported as an error and importing is aborted. However, this isn't actually strong enough, since although the import is aborted, the scop has already been modified and is very likely broken. Instead, make this a hard failure and throw an LLVM error. This new behaviour requires small changes to the tests for the legacy pass, namely using `not` to verify the error. Further, fixed the jscop file for the base_pointer_load_is_inst_inside_invariant_1 testcase. Reviewed By: Meinersbur Split out of D36578. llvm-svn: 310599
*	[Simplify] Rewrite redundant write detection algorithm.	Michael Kruse	2017-08-01	1	-0/+54
	The previous algorithm was to search a writes and the sours of its value operand, and see whether the write just stores the same read value back, which includes a search whether there is another write access between them. This is O(n^2) in the max number of accesses in a statement (+ the complexity of isl comparing the access functions). The new algorithm is more similar to the one used for searching for overwrites and coalescable writes. It scans over all accesses in order of execution while tracking which array elements still have the same value since it was read. This is O(n), not counting the complexity within isl. It should be more reliable than trying to catch all non-conforming cases in the previous approach. It is also less code. We now also support if the write is a partial write of the read's domain, and to some extent non-affine subregions. Differential Revision: https://reviews.llvm.org/D36137 llvm-svn: 309734