void f1(int *a, int *b, int *c)
{
int d = 0xE0E0E0E0;
*a = *b = *c = d;
}
produces
_f1:
LFB0:
movl $-522133280, (%rdx)
movl $-522133280, (%rsi)
movl $-522133280, (%rdi)
ret
on x86-64 at -Os. It would save instruction space and probably not be any
slower to actually assign d to a register, but this is only done for 64-bit
constants.
--
Summary: x86 constants could be unduplicated
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: astrange at ithinksw dot com
GCC host triplet: x86_64-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44073
