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common.opt (flag_debug_types_section): Default to 0. 

* common.opt (flag_debug_types_section): Default to 0.
	(dwarf_version): Default to 4.
	(dwarf_record_gcc_switches): Default to 1.
	(dwarf_strict): Default to 0.
	* toplev.c (process_options): Don't handle dwarf_strict
	or dwarf_version here.
	* config/vxworks.c (vxworks_override_options): Don't
	test whether dwarf_strict or dwarf_version are negative,
	instead test !global_options_set.x_dwarf_*.
	* config/darwin.c (darwin_override_options): Default to
	dwarf_version 2.
	* doc/invoke.texi: Note that -gdwarf-4, -grecord-gcc-switches
	and -fno-debug-types-section are now the default.

From-SVN: r186835
This commit is contained in:
Jakub Jelinek 2012-04-25 18:59:11 +02:00 committed by Jakub Jelinek
parent 9c8305f8fc
commit 98095aa337
6 changed files with 36 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
gcc/ChangeLog
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@ -1,3 +1,19 @@
2012-04-25 Jakub Jelinek <jakub@redhat.com>
* common.opt (flag_debug_types_section): Default to 0.
(dwarf_version): Default to 4.
(dwarf_record_gcc_switches): Default to 1.
(dwarf_strict): Default to 0.
* toplev.c (process_options): Don't handle dwarf_strict
or dwarf_version here.
* config/vxworks.c (vxworks_override_options): Don't
test whether dwarf_strict or dwarf_version are negative,
instead test !global_options_set.x_dwarf_*.
* config/darwin.c (darwin_override_options): Default to
dwarf_version 2.
* doc/invoke.texi: Note that -gdwarf-4, -grecord-gcc-switches
and -fno-debug-types-section are now the default.
2012-04-25 Jan Hubicka <jh@suse.cz> 2012-04-25 Jan Hubicka <jh@suse.cz>
* cgraphunit.c: Update toplevel comment. * cgraphunit.c: Update toplevel comment.

8
gcc/common.opt
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@ -967,7 +967,7 @@ Common Joined RejectNegative Var(common_deferred_options) Defer
Map one directory name to another in debug information Map one directory name to another in debug information
fdebug-types-section fdebug-types-section
Common Report Var(flag_debug_types_section) Init(1) Common Report Var(flag_debug_types_section) Init(0)
Output .debug_types section when using DWARF v4 debuginfo. Output .debug_types section when using DWARF v4 debuginfo.
; Nonzero for -fdefer-pop: don't pop args after each function call ; Nonzero for -fdefer-pop: don't pop args after each function call
@ -2212,7 +2212,7 @@ Common JoinedOrMissing Negative(gdwarf-)
Generate debug information in COFF format Generate debug information in COFF format
gdwarf- gdwarf-
Common Joined UInteger Var(dwarf_version) Init(-1) Negative(gstabs) Common Joined UInteger Var(dwarf_version) Init(4) Negative(gstabs)
Generate debug information in DWARF v2 (or later) format Generate debug information in DWARF v2 (or later) format
ggdb ggdb
@ -2220,7 +2220,7 @@ Common JoinedOrMissing
Generate debug information in default extended format Generate debug information in default extended format
gno-record-gcc-switches gno-record-gcc-switches
Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(0) Common RejectNegative Var(dwarf_record_gcc_switches,0) Init(1)
Don't record gcc command line switches in DWARF DW_AT_producer. Don't record gcc command line switches in DWARF DW_AT_producer.
grecord-gcc-switches grecord-gcc-switches
@ -2236,7 +2236,7 @@ Common JoinedOrMissing Negative(gvms)
Generate debug information in extended STABS format Generate debug information in extended STABS format
gno-strict-dwarf gno-strict-dwarf
Common RejectNegative Var(dwarf_strict,0) Init(-1) Common RejectNegative Var(dwarf_strict,0) Init(0)
Emit DWARF additions beyond selected version Emit DWARF additions beyond selected version
gstrict-dwarf gstrict-dwarf

4
gcc/config/darwin.c
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@ -1,6 +1,6 @@
/* Functions for generic Darwin as target machine for GNU C compiler. /* Functions for generic Darwin as target machine for GNU C compiler.
Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004, Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
2005, 2006, 2007, 2008, 2009, 2010, 2011 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc. Free Software Foundation, Inc.
Contributed by Apple Computer Inc. Contributed by Apple Computer Inc.
@ -2973,6 +2973,8 @@ darwin_override_options (void)
workaround for tool bugs. */ workaround for tool bugs. */
if (!global_options_set.x_dwarf_strict) if (!global_options_set.x_dwarf_strict)
dwarf_strict = 1; dwarf_strict = 1;
if (!global_options_set.x_dwarf_version)
dwarf_version = 2;
/* Do not allow unwind tables to be generated by default for m32. /* Do not allow unwind tables to be generated by default for m32.
fnon-call-exceptions will override this, regardless of what we do. */ fnon-call-exceptions will override this, regardless of what we do. */

6
gcc/config/vxworks.c
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@ -1,5 +1,5 @@
/* Common VxWorks target definitions for GNU compiler. /* Common VxWorks target definitions for GNU compiler.
Copyright (C) 2007, 2008, 2010 Copyright (C) 2007, 2008, 2010, 2012
Free Software Foundation, Inc. Free Software Foundation, Inc.
Contributed by CodeSourcery, Inc. Contributed by CodeSourcery, Inc.
@ -147,9 +147,9 @@ vxworks_override_options (void)
/* Default to strict dwarf-2 to prevent potential difficulties observed with /* Default to strict dwarf-2 to prevent potential difficulties observed with
non-gdb debuggers on extensions > 2. */ non-gdb debuggers on extensions > 2. */
if (dwarf_strict < 0) if (!global_options_set.x_dwarf_strict)
dwarf_strict = 1; dwarf_strict = 1;
if (dwarf_version < 0) if (!global_options_set.x_dwarf_version)
dwarf_version = 2; dwarf_version = 2;
} }

17
gcc/doc/invoke.texi
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@ -4781,14 +4781,16 @@ normally emits debugging information for classes because using this
option increases the size of debugging information by as much as a option increases the size of debugging information by as much as a
factor of two. factor of two.
@item -fno-debug-types-section @item -fdebug-types-section
@opindex fno-debug-types-section
@opindex fdebug-types-section @opindex fdebug-types-section
By default when using DWARF Version 4 or higher, type DIEs are put into @opindex fno-debug-types-section
When using DWARF Version 4 or higher, type DIEs can be put into
their own @code{.debug_types} section instead of making them part of the their own @code{.debug_types} section instead of making them part of the
@code{.debug_info} section. It is more efficient to put them in a separate @code{.debug_info} section. It is more efficient to put them in a separate
comdat sections since the linker can then remove duplicates. comdat sections since the linker can then remove duplicates.
But not all DWARF consumers support @code{.debug_types} sections yet. But not all DWARF consumers support @code{.debug_types} sections yet
and on some objects @code{.debug_types} produces larger instead of smaller
debugging information.
@item -gstabs+ @item -gstabs+
@opindex gstabs+ @opindex gstabs+
@ -4819,7 +4821,8 @@ assembler (GAS) to fail with an error.
@item -gdwarf-@var{version} @item -gdwarf-@var{version}
@opindex gdwarf-@var{version} @opindex gdwarf-@var{version}
Produce debugging information in DWARF format (if that is supported). Produce debugging information in DWARF format (if that is supported).
The value of @var{version} may be either 2, 3 or 4; the default version is 2. The value of @var{version} may be either 2, 3 or 4; the default version
for most targets is 4.
Note that with DWARF Version 2, some ports require and always Note that with DWARF Version 2, some ports require and always
use some non-conflicting DWARF 3 extensions in the unwind tables. use some non-conflicting DWARF 3 extensions in the unwind tables.
@ -4834,12 +4837,12 @@ compiler that may affect code generation to be appended to the
DW_AT_producer attribute in DWARF debugging information. The options DW_AT_producer attribute in DWARF debugging information. The options
are concatenated with spaces separating them from each other and from are concatenated with spaces separating them from each other and from
the compiler version. See also @option{-frecord-gcc-switches} for another the compiler version. See also @option{-frecord-gcc-switches} for another
way of storing compiler options into the object file. way of storing compiler options into the object file. This is the default.
@item -gno-record-gcc-switches @item -gno-record-gcc-switches
@opindex gno-record-gcc-switches @opindex gno-record-gcc-switches
Disallow appending command-line options to the DW_AT_producer attribute Disallow appending command-line options to the DW_AT_producer attribute
in DWARF debugging information. This is the default. in DWARF debugging information.
@item -gstrict-dwarf @item -gstrict-dwarf
@opindex gstrict-dwarf @opindex gstrict-dwarf

9
gcc/toplev.c
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@ -1375,15 +1375,6 @@ process_options (void)
} }
} }
/* Unless over-ridden for the target, assume that all DWARF levels
may be emitted, if DWARF2_DEBUG is selected. */
if (dwarf_strict < 0)
dwarf_strict = 0;
/* And select a default dwarf level. */
if (dwarf_version < 0)
dwarf_version = 2;
/* A lot of code assumes write_symbols == NO_DEBUG if the debugging /* A lot of code assumes write_symbols == NO_DEBUG if the debugging
level is 0. */ level is 0. */
if (debug_info_level == DINFO_LEVEL_NONE) if (debug_info_level == DINFO_LEVEL_NONE)