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| author | Jan Hubicka <jh@suse.cz> | 2010-04-06 15:18:18 +0000 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2010-04-06 15:18:18 +0000 |
| commit | b1a0b3b4ff189d34f58e2111121b35fb8c279602 (patch) | |
| tree | 73ad6f631ae8adc1be1e42fdd9d31ef2804d19d8 /libffi | |
| parent | 1b10fc20a2e823e7655e3d81961f7d47c0ff330a (diff) | |
| download | gcc-b1a0b3b4ff189d34f58e2111121b35fb8c279602.zip gcc-b1a0b3b4ff189d34f58e2111121b35fb8c279602.tar.gz gcc-b1a0b3b4ff189d34f58e2111121b35fb8c279602.tar.bz2 | |
re PR tree-optimization/42906 (Empty loop not removed)
PR tree-optimization/42906
* tree-ssa-dce.c (mark_control_dependent_edges_necessary): Add IGNORE_SELF
argument; set visited_control_parents for fully processed BBs.
(find_obviously_necessary_stmts): Update call of
mark_control_dependent_edges_necessary.
(propagate_necessity): Likewise; handle PHI edges more curefully.
* gcc.dg/tree-ssa/dce-1.c: New testcase.
From-SVN: r158004
Diffstat (limited to 'libffi')
0 files changed, 0 insertions, 0 deletions