On Fri, Jul 6, 2012 at 10:49 AM, Feng LI wrote:
> So under x86_64 machine, I could do a
> Shl %rax 32 safely without being truncated?
Yes.
> Still , why the suffix q is removed in the disassembled code if they are the
> same?
>
You can get suffix by adding -Msuffix to objdump.
--
H.J.
On Fri, Jul 6, 2012 at 9:27 AM, Feng LI wrote:
> Hi folks,
>
> I have a backend hook (x86_64) for builtin function expansion, so
> I have this:
>
> expand_simple_binop (DImode, ASHIFT, op0,
> GEN_INT (32),op0,1,OPTAB_DIRECT);
>
> to generate op0 = op0<<32 (op0 is th
On Fri, Jul 6, 2012 at 9:27 AM, Feng LI wrote:
> Hi folks,
>
> I have a backend hook (x86_64) for builtin function expansion, so
> I have this:
>
> expand_simple_binop (DImode, ASHIFT, op0,
> GEN_INT (32),op0,1,OPTAB_DIRECT);
>
> to generate op0 = op0<<32 (op0 is th
Hi folks,
I have a backend hook (x86_64) for builtin function expansion, so
I have this:
expand_simple_binop (DImode, ASHIFT, op0,
GEN_INT (32),op0,1,OPTAB_DIRECT);
to generate op0 = op0<<32 (op0 is the first argument of this builtin
function, with type SIZE_T)
T
