From: Richard Henderson
Date: Thu, 06 Oct 2011 10:47:28 -0700
> You've said that POPC only operates on the full 64-bit register,
> but I see no zero-extend of the SImode input? Similarly for
> the clzsi patterns.
This addresses all of the problems you found, and also exposes the
"sub 32" to th
From: Richard Henderson
Date: Thu, 06 Oct 2011 10:47:28 -0700
> You've said that POPC only operates on the full 64-bit register,
> but I see no zero-extend of the SImode input? Similarly for
> the clzsi patterns.
Thanks for catching this.
I guess if I emit the zero-extend, the compiler will e
On 10/05/2011 11:41 PM, David Miller wrote:
> +(define_expand "popcount2"
> + [(set (match_operand:SIDI 0 "register_operand" "")
> +(popcount:SIDI (match_operand:SIDI 1 "register_operand" "")))]
> + "TARGET_POPC"
> +{
> + if (! TARGET_ARCH64)
> +{
> + emit_insn (gen_popcount_v8p
