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| author | Richard Biener <rguenther@suse.de> | 2021-04-13 10:12:03 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-04-27 11:06:33 +0200 |
| commit | d1d01a66012a93cc8cb7dafbe1b5ec453ec96b59 (patch) | |
| tree | 4439a797fdaa7981d36b092f7383c582267d4b90 /gcc/expr.c | |
| parent | dfdc02bf29670c1c7f5f2820b6db11c66c258716 (diff) | |
| download | gcc-d1d01a66012a93cc8cb7dafbe1b5ec453ec96b59.zip gcc-d1d01a66012a93cc8cb7dafbe1b5ec453ec96b59.tar.gz gcc-d1d01a66012a93cc8cb7dafbe1b5ec453ec96b59.tar.bz2 | |
tree-optimization/100051 - disambiguate access size vs decl
This adds disambiguation of the access size vs. the decl size
in the pointer based vs. decl based disambiguator. We have
a TBAA based check like this already but that's fend off when
seeing alias-sets of zero or when -fno-strict-aliasing is in
effect. Also the perceived dynamic type could be smaller than
the actual access.
2021-04-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/100051
* tree-ssa-alias.c (indirect_ref_may_alias_decl_p): Add
disambiguator based on access size vs. decl size.
* gcc.dg/tree-ssa/ssa-fre-92.c: New testcase.
Diffstat (limited to 'gcc/expr.c')
0 files changed, 0 insertions, 0 deletions