https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Alexander Monakov changed:
What|Removed |Added
CC||amonakov at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
--- Comment #9 from Christopher Head ---
I had to use slightly different code because I only have an ARM cross-compiler
version 8.2.0 installed, so I used this:
void g(unsigned char x);
struct MyStruct {
char foo[8];
};
unsigned char
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
--- Comment #8 from Segher Boessenkool ---
It is not fixed in trunk, even. A better testcase removes the __volatile__:
if this is properly optimised the whole asm disappears then, but in the case
of MYSIZE 3 it does not with the current GCC.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Christopher Head changed:
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CC||headch at gmail dot com
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Hans-Peter Nilsson hp at gcc dot gnu.org changed:
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CC||hp at gcc dot
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Andrew Haley aph at redhat dot com changed:
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CC||aph at redhat dot
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Segher Boessenkool segher at gcc dot gnu.org changed:
What|Removed |Added
Status|RESOLVED|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
--- Comment #4 from Andrew Pinski pinskia at gcc dot gnu.org ---
(In reply to Segher Boessenkool from comment #3)
Reopened; this is a perfectly valid missed optimisation.
Nothing here does a full memory clobber; instead, CSE simply doesn't
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
--- Comment #5 from David gccbugzilla at limegreensocks dot com ---
I agree that the benefit for 3 bytes isn't going to be a big win. And
certainly this sample, created from scratch solely to illustrate the problem,
can be better written.
For
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Andrew Pinski pinskia at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
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