| commit | 724b64304ff5c8ac08a913509afd6fde38d7b767 | |
| author | Richard Biener <rguenther@suse.de> | |
| Wed, 31 Jan 2024 10:28:50 +0000 (31 11:28 +0100) | ||
| committer | Richard Biener <rguenther@suse.de> | |
| Wed, 31 Jan 2024 11:29:19 +0000 (31 12:29 +0100) | ||
| tree | a9919753900b9f3b5fa99781d921c6641169b86c | treesnapshot (tar.gz zip) |
| parent | b59775b642bb2b1ecd2e6d52c988b9c432117bc8 | commitdiff |
tree-optimization/113630 - invalid code hoisting
The following avoids code hoisting (but also PRE insertion) of
expressions that got value-numbered to another one that are not
a valid replacement (but still compute the same value). This time
because the access path ends in a structure with different size,
meaning we consider a related access as not trapping because of the
size of the base of the access.
PR tree-optimization/113630
* tree-ssa-pre.cc (compute_avail): Avoid registering a
reference with a representation with not matching base
access size.
* gcc.dg/torture/pr113630.c: New testcase.
The following avoids code hoisting (but also PRE insertion) of
expressions that got value-numbered to another one that are not
a valid replacement (but still compute the same value). This time
because the access path ends in a structure with different size,
meaning we consider a related access as not trapping because of the
size of the base of the access.
PR tree-optimization/113630
* tree-ssa-pre.cc (compute_avail): Avoid registering a
reference with a representation with not matching base
access size.
* gcc.dg/torture/pr113630.c: New testcase.
| gcc/testsuite/gcc.dg/torture/pr113630.c | [new file with mode: 0644] | blob |
| gcc/tree-ssa-pre.cc | diffblobblamehistory |