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Re: sh-elf: PR target/15886

From: Kaz Kojima <kkojima at rr dot iij4u dot or dot jp>
To: joern dot rennecke at superh dot com
Cc: gcc at gcc dot gnu dot org, aoliva at redhat dot com
Date: Sat, 12 Jun 2004 00:01:07 +0900 (JST)
Subject: Re: sh-elf: PR target/15886
References: <20040611.090000.55853343.kkojima@rr.iij4u.or.jp><200406111420.i5BEKeb05991@linsvr1.uk.superh.com>

Joern Rennecke <joern.rennecke@superh.com> wrote:
> Yes, indeed.  It appears it should use gen_rtx_MEM (Pmode, return_address_pointer_rtx) both for TARGET_SH5 and ! TARGET_SH5.

The patch you suggest fixes the problem for the small testcases.
I'll regtest it on sh-elf-3_5-branch and send it to gcc-patch if
there are no problems.

>> Is it wrong to just return NULL_RTX for that case?
> 
> Yes, it is wrong, because that would invalidate the RETURN_ADDRESS_POINTER
> case of initial_elimination_offset.

I got it.  Thanks for your suggestion and explanation.

Regards,
	kaz

Follow-Ups:
- Re: sh-elf: PR target/15886
  - From: Joern Rennecke

References:
- sh-elf: PR target/15886
  - From: Kaz Kojima
- Re: sh-elf: PR target/15886
  - From: Joern Rennecke

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