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| author |   Zhixiong Chi <zhixiong.chi@windriver.com> | 2019-05-28 00:59:49 -0700 |
|---|---|---|
| committer |   Armin Kuster <akuster808@gmail.com> | 2019-09-04 08:22:03 -0700 |
| commit | 7edf5725631e69c22627e41ecf5de3222f1d624b (patch) | |
| tree | 0fc7c14e41fbe7329beaa09a081618aa45ee1ef9 | |
| parent | b7bc9c12219f5c48eb6698e4537f6c0be94ac06a (diff) | |
| download | openembedded-core-contrib-7edf5725631e69c22627e41ecf5de3222f1d624b.tar.gz | |
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.
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>
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-8.3.inc | 1 | ||||
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-8.3/0042-PR-debug-86964.patch | 94 |
2 files changed, 95 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" diff --git a/meta/recipes-devtools/gcc/gcc-8.3/0042-PR-debug-86964.patch b/meta/recipes-devtools/gcc/gcc-8.3/0042-PR-debug-86964.patch new file mode 100644 index 0000000000..d9b5d39b77 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-8.3/0042-PR-debug-86964.patch @@ -0,0 +1,94 @@ +From beb921e1106b5bcbb0c6e2be84b241327e2ffc51 Mon Sep 17 00:00:00 2001 +From: law <law@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Mon, 25 Mar 2019 21:19:09 +0000 +Subject: [PATCH] PR debug/86964 * dwarf2out.c + (premark_used_variables): New function. (prune_unused_types_walk): Do + not mark not premarked external variables. (prune_unused_types): + Call premark_used_variables. + + * gcc.dg/debug/dwarf2/pr86964.c: New testcase. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269925 138bc75d-0d04-0410-961f-82ee72b054a4 + +Upstream-Status: Backport +Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> +--- + gcc/ChangeLog | 8 ++++++ + gcc/dwarf2out.c | 32 +++++++++++++++++++++ + 2 files changed, 40 insertions(+) + +diff --git a/gcc/ChangeLog b/gcc/ChangeLog +index 2075480ca2b..cdce539ac6f 100644 +--- a/gcc/ChangeLog ++++ b/gcc/ChangeLog +@@ -1,3 +1,11 @@ ++2019-03-25 Johan Karlsson <johan.karlsson@enea.com> ++ ++ PR debug/86964 ++ * dwarf2out.c (premark_used_variables): New function. ++ (prune_unused_types_walk): Do not mark not premarked external ++ variables. ++ (prune_unused_types): Call premark_used_variables. ++ + 2019-02-22 Release Manager + + * GCC 8.3.0 released. +diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c +index ae8bdee9981..b9a624e1ac7 100644 +--- a/gcc/dwarf2out.c ++++ b/gcc/dwarf2out.c +@@ -22658,6 +22658,21 @@ premark_types_used_by_global_vars (void) + ->traverse<void *, premark_types_used_by_global_vars_helper> (NULL); + } + ++/* Mark all variables used by the symtab as perennial. */ ++ ++static void ++premark_used_variables (void) ++{ ++ /* Mark DIEs in the symtab as used. */ ++ varpool_node *var; ++ FOR_EACH_VARIABLE (var) ++ { ++ dw_die_ref die = lookup_decl_die (var->decl); ++ if (die) ++ die->die_perennial_p = 1; ++ } ++} ++ + /* Generate a DW_TAG_call_site DIE in function DECL under SUBR_DIE + for CA_LOC call arg loc node. */ + +@@ -29264,6 +29279,19 @@ prune_unused_types_walk (dw_die_ref die) + + return; + ++ case DW_TAG_variable: ++ if (flag_debug_only_used_symbols) ++ { ++ if (die->die_perennial_p) ++ break; ++ ++ /* premark_used_variables marks external variables --- don't mark ++ them here. */ ++ if (get_AT (die, DW_AT_external)) ++ return; ++ } ++ /* FALLTHROUGH */ ++ + default: + /* Mark everything else. */ + break; +@@ -29390,6 +29418,10 @@ prune_unused_types (void) + /* Mark types that are used in global variables. */ + premark_types_used_by_global_vars (); + ++ /* Mark variables used in the symtab. */ ++ if (flag_debug_only_used_symbols) ++ premark_used_variables (); ++ + /* Set the mark on nodes that are actually used. */ + prune_unused_types_walk (comp_unit_die ()); + for (node = limbo_die_list; node; node = node->next) +-- +2.21.0 |