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Re: [PATCH] ARM half-precision floating point, 8/8 (test cases)

From: Paolo Bonzini <bonzini at gnu dot org>
To: Sandra Loosemore <sandra at codesourcery dot com>
Cc: Richard Guenther <richard dot guenther at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 23 Apr 2009 08:34:28 +0200
Subject: Re: [PATCH] ARM half-precision floating point, 8/8 (test cases)
References: <49E65FB1.8090803@codesourcery.com> <84fc9c000904160120g733aa18cwe4da56780a70baf7@mail.gmail.com> <49E6EE69.30906@gnu.org> <49EFB1B3.3070804@codesourcery.com>

> If we want __attribute__((mode(HF))) to work anyway, I suppose that means
> adding another target hook, and fixing handle_mode_attribute to use it
> instead of scalar_mode_supported_p.
>
> If the current behavior is deemed to be correct, I can add an ARM-specific
> test case to make sure __attribute__((mode(HF))) fails.

You can add a test case to make sure i passes, and XFAIL it.

Off the top of my head, I would think you can modify
scalar_mode_supported_p.  After all arithmetic in HFmode is supported
as much as arithmetic in QImode on most RISC targets -- via promotion.

Paolo

References:
- [PATCH] ARM half-precision floating point, 8/8 (test cases)
  - From: Sandra Loosemore
- Re: [PATCH] ARM half-precision floating point, 8/8 (test cases)
  - From: Richard Guenther
- Re: [PATCH] ARM half-precision floating point, 8/8 (test cases)
  - From: Paolo Bonzini
- Re: [PATCH] ARM half-precision floating point, 8/8 (test cases)
  - From: Sandra Loosemore

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