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| author | Florian Hahn <flo@fhahn.com> | 2019-07-30 16:43:39 +0000 |
|---|---|---|
| committer | Florian Hahn <flo@fhahn.com> | 2019-07-30 16:43:39 +0000 |
| commit | 2d7227ec3ac91f36fc32b1c21e72e2f1f5d030ad (patch) | |
| tree | e8deccc84424c6eb671939bf98e98164302af0ce /llvm/docs/tutorial | |
| parent | d3ae0bc31043bdd544485f060dbc1bf79a4aa5f9 (diff) | |
| download | bcm5719-llvm-2d7227ec3ac91f36fc32b1c21e72e2f1f5d030ad.tar.gz bcm5719-llvm-2d7227ec3ac91f36fc32b1c21e72e2f1f5d030ad.zip | |
[GVN] Preserve loop related analysis/canonical forms.
LoopInfo can be easily preserved by passing it to the functions that
modify the CFG (SplitCriticalEdge and MergeBlockIntoPredecessor.
SplitCriticalEdge also preserves LoopSimplify and LCSSA form when when passing in
LoopInfo. The test case shows that we preserve LoopSimplify and
LoopInfo. Adding addPreservedID(LCSSAID) did not preserve LCSSA for some
reason.
Also I am not sure if it is possible to preserve those in the new pass
manager, as they aren't analysis passes.
Reviewers: reames, hfinkel, davide, jdoerfert
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D65137
llvm-svn: 367332
Diffstat (limited to 'llvm/docs/tutorial')
0 files changed, 0 insertions, 0 deletions
