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| author | Richard Biener <rguenther@suse.de> | 2021-01-06 09:26:55 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-01-06 09:33:37 +0100 |
| commit | a05cc70a6c1ae0e5b22e16f4d8d13995a38ea1f9 (patch) | |
| tree | 4bf3a143b16e38f1dcb6d6b8cc72ece392047926 /gcc/tree-ssa-loop-manip.c | |
| parent | 57706dd7e001d8302b596521217827855324e748 (diff) | |
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tree-optimization/98513 - fix bug in range intersection code
This fixes a premature optimization in the range intersection code
which assumes earlier branches have to be taken, not taking into
account that for symbolic ranges we cannot always compare endpoints.
The fix is to instantiate the compare deemed redundant (which then
fails as undecidable for the testcase).
2021-01-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/98513
* value-range.cc (intersect_ranges): Compare the upper bounds
for the expected relation.
* gcc.dg/tree-ssa/pr98513.c: New testcase.
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
0 files changed, 0 insertions, 0 deletions