Richard Henderson - Re: [m32c] reject illegal subregs of hard regs (original) (raw)

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• From: Richard Henderson
• To: DJ Delorie
• Cc: gcc-patches at gcc dot gnu dot org
• Date: Thu, 8 Feb 2007 16:26:54 -0800
• Subject: Re: [m32c] reject illegal subregs of hard regs
• References: <200702082222.l18MMsai028179@greed.delorie.com>

On Thu, Feb 08, 2007 at 05:22:54PM -0500, DJ Delorie wrote:

+static struct {

• enum machine_mode outer_mode_size;
• enum machine_mode inner_mode_size;
• unsigned int regno;
• int byte_mask;
• int legal_when; +} legal_subregs[] = {
• {1, 2, R0_REGNO, 0x03, 1}, /* r0h r0l */

outer_mode_size and inner_mode_size should probably be unsigned char; you're not actually using a machine mode here. If you change that, move byte_mask and legal_when next to them, and make them unsigned char too.

Make the whole array const.

r~

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