6 Commits

Author	SHA1	Message	Date
Jaebaek Seo	f8d7df760c	Fix OpLine bug of merge-blocks pass (#3130) ... As explained in #3118, spirv-opt merge-blocks pass causes a spirv-val error when an OpBranch has an OpLine in front of it. OpLoopMerge OpBranch ; Will be killed by merge-blocks pass OpLabel ; Will be killed by merge-blocks pass OpLine ; will be placed between OpLoopMerge and OpBranch - error! OpBranch To fix this issue, this commit moves line info of OpBranch to OpLoopMerge. Fixes #3118	2020-01-14 14:35:21 -05:00
alan-baker	b334829a91	Validate nested constructs (#3068) ... * Validate that if a construct contains a header and it's merge is reachable, the construct also contains the merge * updated block merging to not merge into the continue * update inlining to mark the original block of a single block loop as the continue * updated some tests * remove dead code * rename kBlockTypeHeader to kBlockTypeSelection for clarity	2019-11-27 16:45:57 -05:00
alan-baker	354205b3dc	Don't merge unreachable blocks (#2375) ... Fixes #2374 * Block merging no longer merges unreachable blocks into their successors * added a test	2019-02-12 09:24:01 -05:00
alan-baker	63e032f910	Remove unused lambda capture (#2350)	2019-01-31 15:57:45 -05:00
Alastair Donaldson	3b6fee3dae	Fixes #2338. Added functionality to remove OpPhi instructions (replacing their uses) when merging blocks (#2339) ... * Fixes #2338. Added check for phi node before merging blocks. * Added functionality to merge blocks A and B even when B starts with OpPhi instructions, by replacing uses of the OpPhi results with the definitions coming from A. Added some tests for this. * Fixed assertion.	2019-01-31 09:36:05 -05:00
Alastair Donaldson	3345fe6a9d	Extracted block merging functionality into its own utility file (#2325) ... * Extracted useful functionality from block merger and exposed it as stand-alone methods. * Separated these methods into a utility file.	2019-01-25 10:57:13 +00:00