[Bug c/91398] Possible missed optimization: Can a pointer be passed as hidden pointer in x86-64 System V ABI

2019-08-10 Thread rguenther at suse dot de
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 --- Comment #5 from rguenther at suse dot de --- On August 10, 2019 4:22:25 AM GMT+02:00, peter at cordes dot ca wrote: >https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 > >Peter Cordes changed: > > What|Removed

[Bug c/91398] Possible missed optimization: Can a pointer be passed as hidden pointer in x86-64 System V ABI

2019-08-09 Thread peter at cordes dot ca
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 Peter Cordes changed: What|Removed |Added CC||peter at cordes dot ca --- Comment #4

[Bug c/91398] Possible missed optimization: Can a pointer be passed as hidden pointer in x86-64 System V ABI

2019-08-09 Thread no...@turm-lahnstein.de
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 --- Comment #3 from ead --- Thank you for the expanations and your time!

[Bug c/91398] Possible missed optimization: Can a pointer be passed as hidden pointer in x86-64 System V ABI

2019-08-09 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 Richard Biener changed: What|Removed |Added CC||rguenth at gcc dot gnu.org --- Comment

[Bug c/91398] Possible missed optimization: Can a pointer be passed as hidden pointer in x86-64 System V ABI

2019-08-08 Thread joseph at codesourcery dot com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91398 --- Comment #1 from joseph at codesourcery dot com --- ABI question: is a function that returns a value through such a hidden pointer required not to write anything to the storage pointed to until it knows that it will definitely be returning