https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65088
Bug ID: 65088
Summary: Does GCC has load/store widening phase?
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: m.zakirov at samsung dot com
This example says me that it doesn't.
$ cat t2.c
int a[2];
int b[2];
int main ()
{
b[0] = a[0];
b[1] = a[1];
return 0;
}
$ gcc t2.c -O3 -S
$ cat t2.s
...
main:
.LFB0:
.cfi_startproc
movl a(%rip), %eax
movl %eax, b(%rip)
movl a+4(%rip), %eax
movl %eax, b+4(%rip)
xorl %eax, %eax
ret
.cfi_endproc
gcc version is:
commit 71464ecd3a554b889c3bbc53d8874fc532bdf953
Author: trippels <trippels@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon Jan 12 07:53:10 2015 +0000
