[src/trunk]: src/sys/arch/ia64/conf Disable optimization for pmap.c to preven...

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

details:   https://anonhg.NetBSD.org/src/rev/5d8f47490b85
branches:  trunk
changeset: 456325:5d8f47490b85
user:      scole <scole%NetBSD.org@localhost>
date:      Sat May 04 02:06:59 2019 +0000

description:
Disable optimization for pmap.c to prevent RAW assembler dependency
warnings.

If port ever becomes more stable, should revert this and figure out
exactly why only pmap seems to have this issue in the kernel.

diffstat:

 sys/arch/ia64/conf/Makefile.ia64 |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (21 lines):

diff -r d9a3d0599313 -r 5d8f47490b85 sys/arch/ia64/conf/Makefile.ia64
--- a/sys/arch/ia64/conf/Makefile.ia64  Sat May 04 00:45:18 2019 +0000
+++ b/sys/arch/ia64/conf/Makefile.ia64  Sat May 04 02:06:59 2019 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile.ia64,v 1.6 2018/09/22 12:24:02 rin Exp $
+#      $NetBSD: Makefile.ia64,v 1.7 2019/05/04 02:06:59 scole Exp $
 
 # Makefile for NetBSD
 #
@@ -34,6 +34,11 @@
 CPPFLAGS+=     -mconstant-gp -Dia64
 AFLAGS+=       -x assembler-with-cpp -Wa,-x 
 
+# XXX don't optimize pmap.c to get rid of assembler warnings like:
+#   Warning: Use of 'st8' may violate RAW dependency 'RR#' (data)
+# Happening with gcc7 and iirc several years worth of prior gcc versions
+COPTS.pmap.c+= -O0
+
 ##
 ## (3) libkern and compat
 ##