[Bug c++/85533] Missing optimization for right-shift of unsigned int (avr-g++)

[randy.brecker64 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85533

Randy Brecker  changed:

   What|Removed |Added

 Target|avr |x86 avr
 Status|RESOLVED|VERIFIED
Version|7.3.0   |8.0.1

--- Comment #3 from Randy Brecker  ---
This is also true von x86_64, where we get:

   movzbl  x(%rip), %eax
sarl%eax
movb%al, x(%rip)
movzbl  y(%rip), %eax
shrb%al
movb%al, y(%rip)
xorl%eax, %eax

Looks like a FE bug here.

[Bug c++/85533] Missing optimization for right-shift of unsigned int (avr-g++)

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85533

Georg-Johann Lay  changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution|--- |DUPLICATE

--- Comment #2 from Georg-Johann Lay  ---
Likely a DUP of PR82658.

*** This bug has been marked as a duplicate of bug 82658 ***

[Bug c++/85533] Missing optimization for right-shift of unsigned int (avr-g++)

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85533

Jonathan Wakely  changed:

   What|Removed |Added

   Keywords||missed-optimization

--- Comment #1 from Jonathan Wakely  ---
I'm not sure if this is specific to the avr target, as we also get different
code for C and C++ on x86_64 targets.