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From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113705] [14 Regression] ICE in decompose, at
 wide-int.h:1049 on aarch64-linux-gnu since r14-8680-g2f14c0dbb78985
Date: Thu, 01 Feb 2024 18:29:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113705

--- Comment #8 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> --- gcc/tree-ssa-math-opts.cc.jj	2024-02-01 09:14:16.623549514 +0100
> +++ gcc/tree-ssa-math-opts.cc	2024-02-01 17:48:59.151771177 +0100
> @@ -2572,7 +2572,8 @@ is_widening_mult_rhs_p (tree type, tree
>  	      if (is_gimple_assign (stmt)
>  		  && gimple_assign_rhs_code (stmt) =3D=3D BIT_AND_EXPR
>  		  && TREE_CODE (gimple_assign_rhs2 (stmt)) =3D=3D INTEGER_CST
> -		  && wi::to_wide (gimple_assign_rhs2 (stmt))
> +		  && wide_int::from (wi::to_wide (gimple_assign_rhs2 (stmt)),
> +				     prec, TYPE_SIGN (TREE_TYPE (rhs)))
>  		     =3D=3D wi::mask (hprec, false, prec))
>  		*new_rhs_out =3D gimple_assign_rhs1 (stmt);
>  	      else
> fixes the ICE.

Works for me on LoongArch.=