| commit | 4bf76b5b6db8e68755788ec91012c5a686440720 | |
| author | Richard Biener <rguenther@suse.de> | |
| Wed, 28 Jun 2023 09:27:45 +0000 (28 11:27 +0200) | ||
| committer | Richard Biener <rguenther@suse.de> | |
| Wed, 28 Jun 2023 13:52:16 +0000 (28 15:52 +0200) | ||
| tree | 623444b0bf98311c63d488beea66f18acc570e81 | treesnapshot (tar.gz zip) |
| parent | c7e87e82435b918084f305386b12b8fbcdcf3307 | commitdiff |
tree-optimization/110434 - avoid <retval> ={v} {CLOBBER} from NRV
When NRV replaces a local variable with <retval> it also replaces
occurences in clobbers. This leads to <retval> being clobbered
before the return of it which is strictly invalid but harmless in
practice since there's no pass after NRV which would remove
earlier stores.
The following fixes this nevertheless.
PR tree-optimization/110434
* tree-nrv.cc (pass_nrv::execute): Remove CLOBBERs of
VAR we replace with <retval>.
When NRV replaces a local variable with <retval> it also replaces
occurences in clobbers. This leads to <retval> being clobbered
before the return of it which is strictly invalid but harmless in
practice since there's no pass after NRV which would remove
earlier stores.
The following fixes this nevertheless.
PR tree-optimization/110434
* tree-nrv.cc (pass_nrv::execute): Remove CLOBBERs of
VAR we replace with <retval>.
| gcc/tree-nrv.cc | diffblobblamehistory |