gcc: reduce the variables in symtab

Backport the patch from upstream:
https://github.com/gcc-mirror/gcc.git [commit beb921e]
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=269925

Add the premark_used_variables function, meanwhile do not mark
not premarked external variables in prune_unused_types_walk.

(From OE-Core rev: 7edf5725631e69c22627e41ecf5de3222f1d624b)

Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.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-8.3.inc b/meta/recipes-devtools/gcc/gcc-8.3.inc
index a64f48a59b..7925337fea 100644
--- a/meta/recipes-devtools/gcc/gcc-8.3.inc
+++ b/meta/recipes-devtools/gcc/gcc-8.3.inc
@@ -72,6 +72,7 @@ SRC_URI = "\
            file://0039-riscv-Disable-multilib-for-OE.patch \
            file://0040-powerpc-powerpc64-Add-support-for-musl-ldso.patch \
            file://0041-Add-a-recursion-limit-to-libiberty-s-demangling-code.patch \
+           file://0042-PR-debug-86964.patch \
 "
 SRC_URI[md5sum] = "65b210b4bfe7e060051f799e0f994896"
 SRC_URI[sha256sum] = "64baadfe6cc0f4947a84cb12d7f0dfaf45bb58b7e92461639596c21e02d97d2c"