> What is the expression that is recorded as anticipated in insn 38? Is it
> "mho:SI
> 0>>0x3" or "udiv(r159:SI,0xa)" from the REG_EQUAL note?
Just to be clear, the anticipated operation is "mho:SI 0>>9x31".
//Claudiu
> I don't think this is not the right fix for the problem. GCSE doesn't handle
> expressions containing hard registers, oprs_unchanged_p should never even
> see expressions involving hard registers.
I was afraid of this one.
>
> What is the expression that is recorded as anticipated in insn 38?
On Tue, Dec 10, 2013 at 4:17 PM, Claudiu Zissulescu wrote:
> Hi,
>
> Our ARC processor has a multiplication operation that returns a 64 bit result
> into a fixed register pair named like this:
>
> mlo:DI=zero_extend(r159:SI)*sign_extend(r181:SI)
>
> The GCSE rtl pre step has some difficulties to
