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Re: DImode operations

From: daniel tian <daniel dot xntian at gmail dot com>
To: Dave Korn <dave dot korn dot cygwin at googlemail dot com>
Cc: gcc at gcc dot gnu dot org, Ian Lance Taylor <iant at google dot com>, peng dot zheng at mavrixtech dot com
Date: Thu, 24 Sep 2009 17:01:53 +0800
Subject: Re: DImode operations
References: <121fadb80909230410x71ca0e0co65202ab901266846@mail.gmail.com> <4ABA1F9F.5050402@gmail.com> <121fadb80909240005l3e6b5311s5740258ac411a999@mail.gmail.com>

Another problem I found when hacking other port.
Do I need to write SF, DF move operations?
And basic arithmetic insn patterns like ADD, SUB in DImode?

Because in CRX port (as I knew, there is no float point unit in this
cpu),  DI,SF,DF mode have 'move' operation. and there are subtract,
add operations in DImode.

So I mean whether I have to achieve all those operations. because my
target is 32bit RISC chip, no 64bit arithmetic operations and no float
point unit.

It's really tough to build libgcc succeeded.

Can your guys give me some suggestions.
Thank you very much.
Best wishes.

                                                       daniel.

Follow-Ups:
- Re: DImode operations
  - From: Dave Korn

References:
- DImode operations
  - From: daniel tian
- Re: DImode operations
  - From: Dave Korn
- Re: DImode operations
  - From: daniel tian

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