[Bug target/62111] ICE when building Linux kernel for sh64

["dhowells at redhat dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62111

--- Comment #6 from dhowells at redhat dot com <dhowells at redhat dot com> ---
(In reply to Kazumoto Kojima from comment #5)
> ...
> 
> even though general_extend_operand doesn't permit (truncate (mem ...)).
> An easy workaround might be to disable truncate in general_extend_operand
> before reload.
> 
> --- gcc/config/sh/predicates.md.orig	2014-08-02 11:55:29.228875715 +0900
> +++ gcc/config/sh/predicates.md	2014-08-17 08:30:20.439326569 +0900
> ...

This does appear to fix the ICE's.  Unfortunately, it seems the kernel code has
bit-rotted too much to get all the way through building.
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From: "dhowells at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/62111] ICE when building Linux kernel for sh64
Date: Mon, 18 Aug 2014 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb111

--- Comment #7 from dhowells at redhat dot com <dhowells at redhat dot com> ---
Having said that, if I use make -k, I can get this:

../drivers/scsi/sd.c: In function 'sd_init_command':
../drivers/scsi/sd.c:1139:1: error: unrecognizable insn:
 }
 ^
(insn 1335 1334 9 190 (set (reg/v:DI 336 [ sector ])
        (lshiftrt:DI (reg:DI 171 [ D.34693 ])
            (const_int -10 [0xfffffffffffffff6]))) ../drivers/scsi/sd.c:707 -1
     (nil))
../drivers/scsi/sd.c:1139:1: internal compiler error: in extract_insn, at
recog.c:2202

Do you want it reducing?