On Sun, Jan 29, 2012 at 8:21 PM, James Courtier-Dutton
wrote:
>
> On Jan 22, 2012 5:21 AM, "Matt Davis" wrote:
>> Essentially, I just want to emit: "and %eax, $0x7"
>>
> Assuming at&t format, does that instruction actually exist?
> How can you store the result in the constant number 7?
> Did yo
Matt Davis writes:
> What I have in my source is the following:
>
> rtx eax = gen_rtx_REG(DImode, 0);
> rtx and = gen_rtx_AND(DImode, eax, gen_rtx_CONST_INT(VOIDmode, 7));
> and = gen_rtx_SET(DImode, eax, and);
> emit_insn_before(and, insn);
This is normally not what you want to
On Sun, 22 Jan 2012, Matt Davis wrote:
> Once I emit my rtx into the list of insns, GCC gives me an "unrecognized insn"
> error. I can trace the code through the first part of the condition,
> specified
> in i386.md, "ix86_binary_operator_ok," and that passes fine from the
> "anddi_1" define_insn
Hello (again),
I have a case where I need to emit an AND operation on a register and a
const_int value. The machine architecture I am looking at, for the .md, is an
i386. Anyways, after matching things up with the rtl.def and what is in the
.md, I use the gen_rtx_AND macro and wrap that in a gen
