From: Thomas De Schampheleire <thomas.de_schamphele...@nokia.com>
In addition to making -feliminate-unused-debug-symbols work for the DWARF
format (see [1]), make this option the default. This behavior was the case
before, e.g. under gcc 4.9.x.
[1] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=269925
This change requires some updates to test cases, which expected the previous
default of not eliminating unused debug symbols.
gcc/ChangeLog:
2019-05-21 Thomas De Schampheleire <thomas.de_schamphele...@nokia.com>
PR debug/86964
* common.opt (feliminate-unused-debug-symbols): Enable by default.
* doc/invoke.texi (Debugging Options): Document new default of
-feliminate-unused-debug-symbols and remove restriction to 'stabs'.
gcc/testsuite/ChangeLog:
2019-05-21 Thomas De Schampheleire <thomas.de_schamphele...@nokia.com>
PR debug/86964
* g++.dg/debug/dwarf2/fesd-any.C: Use
-fno-eliminate-unused-debug-symbols.
* g++.dg/debug/dwarf2/fesd-baseonly.C: Likewise.
* g++.dg/debug/dwarf2/fesd-none.C: Likewise.
* g++.dg/debug/dwarf2/fesd-reduced.C: Likewise.
* g++.dg/debug/dwarf2/fesd-sys.C: Likewise.
* g++.dg/debug/dwarf2/inline-var-1.C: Likewise.
* g++.dg/debug/enum-2.C: Likewise.
* gcc.dg/debug/dwarf2/fesd-any.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-baseonly.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-none.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-reduced.c: Likewise.
* gcc.dg/debug/dwarf2/fesd-sys.c: Likewise.
---
gcc/common.opt | 2 +-
gcc/doc/invoke.texi | 9 +++++----
gcc/testsuite/g++.dg/debug/dwarf2/fesd-any.C | 2 +-
gcc/testsuite/g++.dg/debug/dwarf2/fesd-baseonly.C | 2 +-
gcc/testsuite/g++.dg/debug/dwarf2/fesd-none.C | 2 +-
gcc/testsuite/g++.dg/debug/dwarf2/fesd-reduced.C | 2 +-
gcc/testsuite/g++.dg/debug/dwarf2/fesd-sys.C | 2 +-
gcc/testsuite/g++.dg/debug/dwarf2/inline-var-1.C | 2 +-
gcc/testsuite/g++.dg/debug/enum-2.C | 1 +
gcc/testsuite/gcc.dg/debug/dwarf2/fesd-any.c | 2 +-
gcc/testsuite/gcc.dg/debug/dwarf2/fesd-baseonly.c | 2 +-
gcc/testsuite/gcc.dg/debug/dwarf2/fesd-none.c | 2 +-
gcc/testsuite/gcc.dg/debug/dwarf2/fesd-reduced.c | 2 +-
gcc/testsuite/gcc.dg/debug/dwarf2/fesd-sys.c | 2 +-
14 files changed, 18 insertions(+), 16 deletions(-)
diff --git a/gcc/common.opt b/gcc/common.opt
index d342c4f3749..0e72fd08ec4 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1379,7 +1379,7 @@ Common Report Var(flag_ipa_sra) Init(0) Optimization
Perform interprocedural reduction of aggregates.
feliminate-unused-debug-symbols
-Common Report Var(flag_debug_only_used_symbols)
+Common Report Var(flag_debug_only_used_symbols) Init(1)
Perform unused symbol elimination in debug info.
feliminate-unused-debug-types
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 5e3e8873d35..06c8c60f19e 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -388,7 +388,7 @@ Objective-C and Objective-C++ Dialects}.
-fno-eliminate-unused-debug-types @gol
-femit-struct-debug-baseonly -femit-struct-debug-reduced @gol
-femit-struct-debug-detailed@r{[}=@var{spec-list}@r{]} @gol
--feliminate-unused-debug-symbols -femit-class-debug-always @gol
+-fno-eliminate-unused-debug-symbols -femit-class-debug-always @gol
-fno-merge-debug-strings -fno-dwarf2-cfi-asm @gol
-fvar-tracking -fvar-tracking-assignments}
@@ -7827,10 +7827,11 @@ confusion with @option{-gdwarf-@var{level}}.
Instead use an additional @option{-g@var{level}} option to change the
debug level for DWARF.
-@item -feliminate-unused-debug-symbols
+@item -fno-eliminate-unused-debug-symbols
@opindex feliminate-unused-debug-symbols
-Produce debugging information in stabs format (if that is supported),
-for only symbols that are actually used.
+@opindex fno-eliminate-unused-debug-symbols
+By default, no debug information is produced for symbols that are not actually
+used. Use this option if you want debug information for all symbols.
@item -femit-class-debug-always
@opindex femit-class-debug-always
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-any.C
b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-any.C
index a4a0b50ee50..5868ebc9c85 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-any.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-any.C
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=any" }
+// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=any
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-baseonly.C
b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-baseonly.C
index 4f580ebd361..fe0016a4563 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-baseonly.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-baseonly.C
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf-2 -dA -femit-struct-debug-baseonly" }
+// { dg-options "-gdwarf-2 -dA -femit-struct-debug-baseonly
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-none.C
b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-none.C
index 0af0a83d85f..c5a33967426 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-none.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-none.C
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=none" }
+// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=none
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-reduced.C
b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-reduced.C
index a93b90f05ad..ba40f176375 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-reduced.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-reduced.C
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf-2 -dA -femit-struct-debug-reduced" }
+// { dg-options "-gdwarf-2 -dA -femit-struct-debug-reduced
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-sys.C
b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-sys.C
index 95a9a31ff60..86eeb21cf10 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/fesd-sys.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/fesd-sys.C
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=sys" }
+// { dg-options "-gdwarf-2 -dA -femit-struct-debug-detailed=sys
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/inline-var-1.C
b/gcc/testsuite/g++.dg/debug/dwarf2/inline-var-1.C
index fc3e6fd435f..3b1c913edfc 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/inline-var-1.C
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/inline-var-1.C
@@ -1,5 +1,5 @@
// { dg-do compile { target c++17 } }
-// { dg-options "-O -g -dA -gno-strict-dwarf" }
+// { dg-options "-O -g -dA -gno-strict-dwarf
-fno-eliminate-unused-debug-symbols" }
// { dg-require-weak "" }
// { dg-final { scan-assembler-times "0x3\[^\n\r]* DW_AT_inline" 6 { xfail
*-*-aix* } } }
// { dg-final { scan-assembler-times "0x1\[^\n\r]* DW_AT_inline" 2 { xfail
*-*-aix* } } }
diff --git a/gcc/testsuite/g++.dg/debug/enum-2.C
b/gcc/testsuite/g++.dg/debug/enum-2.C
index d5501313d93..554de37c40a 100644
--- a/gcc/testsuite/g++.dg/debug/enum-2.C
+++ b/gcc/testsuite/g++.dg/debug/enum-2.C
@@ -1,5 +1,6 @@
/* Verify that used enums are output. */
/* { dg-do compile } */
+/* { dg-options "-fno-eliminate-unused-debug-symbols" } */
/* { dg-final { scan-assembler "JTI_MAX" } } */
int var;
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-any.c
b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-any.c
index 810788ae6e3..4062268e54c 100644
--- a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-any.c
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-any.c
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=any" }
+// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=any
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-baseonly.c
b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-baseonly.c
index aefcb871509..fffdf04cfb6 100644
--- a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-baseonly.c
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-baseonly.c
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf -dA -femit-struct-debug-baseonly" }
+// { dg-options "-gdwarf -dA -femit-struct-debug-baseonly
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-none.c
b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-none.c
index 193c05d6155..6fba51287ef 100644
--- a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-none.c
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-none.c
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=none" }
+// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=none
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler-not "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-reduced.c
b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-reduced.c
index ebbfc36672b..4209e30e3f9 100644
--- a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-reduced.c
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-reduced.c
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf -dA -femit-struct-debug-reduced" }
+// { dg-options "-gdwarf -dA -femit-struct-debug-reduced
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-sys.c
b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-sys.c
index ad0a44a95b3..9c100d7cf91 100644
--- a/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-sys.c
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/fesd-sys.c
@@ -1,5 +1,5 @@
// { dg-do compile }
-// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=sys" }
+// { dg-options "-gdwarf -dA -femit-struct-debug-detailed=sys
-fno-eliminate-unused-debug-symbols" }
// { dg-final { scan-assembler "timespec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_sec.*DW_AT_name" } }
// { dg-final { scan-assembler "tv_nsec.*DW_AT_name" } }
--
2.21.0
