Re: [PATCH v1 0/2] arm: recognize vdupq idioms [PR124043]

[Christophe Lyon via Sourceware Forge]

Christophe Lyon (clyon) <cl...@gcc.gnu.org>) commented on the code:


> +++ gcc/config/arm/neon.md
> @@ -3538,2 +3537,2 @@
> -    {
> -      int elt = INTVAL (operands[2]);
> +  {
> +    if (REGNO (operands[1]) <= LAST_ARM_REGNUM)
Is this equivalent to which_alternative == 1 ?


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https://forge.sourceware.org/gcc/gcc/pulls/208#issuecomment-7021