gcc: backport patch to fix miscompilation on mips64

Backport a patch to fix miscompilation on mips64.

We've observed strange behaviour of `systemctl status <xxx> on qemumips64.
The output of the command is like `systemctl show <xxx>', which is incorrect.

The problem is due to the miscompilation of gcc for mips64 platform, thus
backporting patch from upstream to fix this problem.

[YOCTO #12266]

(From OE-Core rev: 6264b4afe6962d37eeb918e062568dee811ef231)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit cfa13e5c756849820644d86d1882602649db6a9c)
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-7.2.inc b/meta/recipes-devtools/gcc/gcc-7.2.inc
index a2cb288ba0..1d40cba731 100644
--- a/meta/recipes-devtools/gcc/gcc-7.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-7.2.inc
@@ -79,6 +79,7 @@ SRC_URI = "\
 "
 BACKPORTS = "\
            file://0051-ARM-PR-82445-suppress-32-bit-aligned-ldrd-strd-peeph.patch \
+           file://0001-PR-rtl-optimization-81803.patch \
 "
 SRC_URI[md5sum] = "ff370482573133a7fcdd96cd2f552292"
 SRC_URI[sha256sum] = "1cf7adf8ff4b5aa49041c8734bbcf1ad18cc4c94d0029aae0f4e48841088479a"