diff options
| author | Aldy Hernandez <aldyh@redhat.com> | 2021-09-28 09:38:50 +0200 |
|---|---|---|
| committer | Aldy Hernandez <aldyh@redhat.com> | 2021-09-28 11:11:20 +0200 |
| commit | fb8b72ebb5b0bf40f7dfef9154c42320ce46f2a7 (patch) | |
| tree | 081a7f87af777eb72e4a6dbca7006979193e69b1 /gcc/tree-ssa-threadupdate.c | |
| parent | dc614a838ecc33578e0903fec599fee6844680a7 (diff) | |
| download | gcc-fb8b72ebb5b0bf40f7dfef9154c42320ce46f2a7.zip gcc-fb8b72ebb5b0bf40f7dfef9154c42320ce46f2a7.tar.gz gcc-fb8b72ebb5b0bf40f7dfef9154c42320ce46f2a7.tar.bz2 | |
Return VARYING in range_on_path_entry if nothing found.
The problem here is that the solver's code solving unknown SSAs on entry
to a path was returning UNDEFINED if there were no incoming edges to the
start of the path that were not the function entry block. This caused a
cascade of pain down stream.
Tested on x86-64 Linux.
PR tree-optimization/102511
gcc/ChangeLog:
* gimple-range-path.cc (path_range_query::range_on_path_entry):
Return VARYING when nothing found.
gcc/testsuite/ChangeLog:
* gcc.dg/pr102511.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-14.c: Adjust.
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
0 files changed, 0 insertions, 0 deletions