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Date: Wed, 21 Aug 2019 19:17:00 -0000
From: Segher Boessenkool <segher@kernel.crashing.org>
To: Tejas Joshi <tejasjoshi9673@gmail.com>
Cc: gcc@gcc.gnu.org, Martin Jambor <mjambor@suse.cz>, hubicka@ucw.cz,        joseph@codesourcery.com
Subject: Re: Expansion of narrowing math built-ins into power instructions
Message-ID: <20190821191722.GH31406@gate.crashing.org>
References: <mpt36i0fbir.fsf@arm.com> <20190819130720.GG31406@gate.crashing.org> <mpt8sro707q.fsf@arm.com> <20190820121137.GP31406@gate.crashing.org> <mptlfvo3sdh.fsf@arm.com> <20190820134613.GR31406@gate.crashing.org> <mpt8srn523k.fsf@arm.com> <20190820194154.GY31406@gate.crashing.org> <CACMrGjByVtJNmckrmMkntZO0ik+5xyfWgp=D8TpwU0PYd9fNSQ@mail.gmail.com> <20190821182852.GG31406@gate.crashing.org>
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On Wed, Aug 21, 2019 at 01:28:52PM -0500, Segher Boessenkool wrote:
> (define_insn "add_truncdfsf3"
>   [(set (match_operand:SF 0 "gpc_reg_operand" "=<Ff>,wa")
> 	(unspec:SF [(match_operand:DF 1 "gpc_reg_operand" "%<Ff>,wa")
> 		    (match_operand:DF 2 "gpc_reg_operand" "<Ff>,wa")]
> 		   UNSPEC_ADD_TRUNCATE)]
>   "TARGET_HARD_FLOAT"
>   "@
>    fadds %0,%1,%2
>    xsaddsp %x0,%x1,%x2"
>   [(set_attr "type" "fp")
>    (set_attr "isa" "*,p8v")])

And not <Ff>...  f, d, d respectively (f for SF, d for DF).


Segher