Hello All,
I compiled a very simple code on a Intel targets:
int a, b, c, d;
void func1(void)
{
a = a & b;
if(a)
c = d;
}
The assembler generated was (on cygwin 32-bit):
movl_b, %eax
andl_a, %eax
testl %eax, %eax
movl%eax, _a
On Fri, Apr 1, 2011 at 8:57 PM, Alex wrote:
> If I understood correct, gcc could replace insns 5, 7, 8 and 9 by the insn
> defined as "*and_2", but it seems "combine" did not tried that.
Yes you missed that combine in GCC only acts on 3 insns at a time.
Though that has changed in GCC 4.6 and abo
Andrew Pinski writes:
> On Fri, Apr 1, 2011 at 8:57 PM, Alex wrote:
>> If I understood correct, gcc could replace insns 5, 7, 8 and 9 by the insn
>> defined as "*and_2", but it seems "combine" did not tried that.
>
> Yes you missed that combine in GCC only acts on 3 insns at a time.
> Though th
