[src/trunk]: src/doc Update gcc9-sh3-lint - instead of disabling optimization...

[hgutch <hgutch%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e5fe6835e94b
branches:  trunk
changeset: 1022119:e5fe6835e94b
user:      hgutch <hgutch%NetBSD.org@localhost>
date:      Mon Jul 05 11:16:56 2021 +0000

description:
Update gcc9-sh3-lint - instead of disabling optimization for lex.c on
sh3, rather revert the gcc change that (seemingly accidentally) broke
this.

diffstat:

 doc/HACKS |  21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

diffs (35 lines):

diff -r 83e3879a5d7b -r e5fe6835e94b doc/HACKS
--- a/doc/HACKS Mon Jul 05 10:34:25 2021 +0000
+++ b/doc/HACKS Mon Jul 05 11:16:56 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: HACKS,v 1.220 2021/06/23 07:11:41 rillig Exp $
+# $NetBSD: HACKS,v 1.221 2021/07/05 11:16:56 hgutch Exp $
 #
 # This file is intended to document workarounds for currently unsolved
 # (mostly) compiler bugs.
@@ -1003,12 +1003,19 @@
 
        hack    gcc9-sh3-lint
        cdate   Tue Jun 22 14:59:52 CEST 2021
-       mdate   Tue Jun 22 14:59:52 CEST 2021
-       who     martin
-       file    usr.bin/xlint/lint1/Makefile    : 1.70
+       mdate   Mon Jul  5 12:34:57 CEST 2021
+       who     hgutch
+       file    external/gpl3/gcc/dist/gcc/config/sh/sh.md 1.2
+               external/gpl3/gcc.old/dist/gcc/config/sh/sh.md 1.11
        descr
-               The in-tree gcc 9 crashes with an internal invalid
-               opcode exception when using any kind of optimization
-               on the lex.c file. Force -O0 for this file.
+               The in-tree gcc 9/gcc 10 crashes with an internal
+               invalid opcode exception when using any kind of
+               optimization on lex.c in usr.bin/xlint/lint .  This
+               was introduced apparently unintendedly in gcc when
+               addressing a different issue.  Rather than disabling
+               optimization for lex.c, instead revert the change to
+               gcc.  The bug report upstream has been updated to
+               reflect the exact breakage.
+
                https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101177
 kcah