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| author | Martin Jambor <mjambor@suse.cz> | 2023-04-03 15:53:36 +0200 |
|---|---|---|
| committer | Martin Jambor <mjambor@suse.cz> | 2023-04-03 16:00:54 +0200 |
| commit | da3fd01757297c1d20cf3dcd76046488da737569 (patch) | |
| tree | f7ee666c0d9ea2890862050f9c9dea14d23c4934 /gcc/fold-const.cc | |
| parent | b0248580b68d970788bb43ac3ab8fe3e21ef71be (diff) | |
| download | gcc-da3fd01757297c1d20cf3dcd76046488da737569.zip gcc-da3fd01757297c1d20cf3dcd76046488da737569.tar.gz gcc-da3fd01757297c1d20cf3dcd76046488da737569.tar.bz2 | |
ipa: Avoid constructing aggregate jump functions with huge offsets (PR 109303)
We are in the process of changing data structures holding information
about constants passed by reference and in aggregates to use unsigned
int offsets rather than HOST_WIDE_INT (which was selected simply
because that is what fell out of get_ref_base_and_extent at that time)
in order to conserve memory, especially at WPA time.
PR 109303 testcase discovers that we do not properly check that we
only create jump functions with offsets (plus sizes) that fit into the
smaller type. This patch adds the necessary check.
gcc/ChangeLog:
2023-03-30 Martin Jambor <mjambor@suse.cz>
PR ipa/109303
* ipa-prop.cc (determine_known_aggregate_parts): Check that the
offset + size will be representable in unsigned int.
gcc/testsuite/ChangeLog:
2023-03-30 Jakub Jelinek <jakub@redhat.com>
Martin Jambor <mjambor@suse.cz>
PR ipa/109303
* gcc.dg/pr109303.c: New test.
Diffstat (limited to 'gcc/fold-const.cc')
0 files changed, 0 insertions, 0 deletions