Hello,
Thanks for the feedback on the previous patch set.
This is the second posting of the RFC patch for CTF support in GCC. This patch
set does not rely on debug hooks, but it keeps CTF and DWARF debug info
generation separated in the compiler.
For CTF generation, callsites in symbol_table::finalize_compilation_unit and
rest_of_decl_compilation are used. For CTF emission, callsite in
symbol_table::finalize_compilation_unit is used.
Summary of the GCC RFC V2 patch set :
Patch 1 and Patch 2 have remain unchanged since V1.
Patch 1 is a simple addition of a new function lang_GNU_GIMPLE to check for
GIMPLE frontend.
Patch 2 and Patch 3 set up the framework for CTF support in GCC :
-- Patch 2 adds the new command line option for generating CTF. CTF generation
is enabled in the compiler by specifying an explicit -gt or
-gtLEVEL[LEVEL=1,2] :
-gtLEVEL
This is used to request CTF debug information and to specify how much CTF
debug information, LEVEL[=0,1,2] can be specified. If -gt is specified
(with no LEVEL), the default value of LEVEL is 2.
-gt0 (Level 0) produces no CTF debug information at all. Thus, -gt0
negates -gt.
-gt1 (Level 1) produces CTF information for tracebacks only. This includes
CTF callsite information, but does not include type information for other
entities.
-gt2 (Level 2) produces type information for entities (functions, variables
etc.) at file-scope or global-scope only. This level of information can be
used by dynamic tracers like DTrace.
-- Patch 3 initializes the CTF container if user-level option for CTF
generation is specified. CTF is generated for all to-be-emitted global
decls if gtLEVEL of 2 is specified.
Tested on x86_64-linux and sparc64-linux.
Thanks
Indu Bhagat (3):
Add new function lang_GNU_GIMPLE
Add CTF command line options : -gtLEVEL
Setup for CTF generation and emission
gcc/ChangeLog | 27 ++
gcc/Makefile.in | 3 +
gcc/cgraphunit.c | 12 +-
gcc/common.opt | 9 +
gcc/ctfout.c | 163 ++++++++
gcc/ctfout.h | 52 +++
gcc/doc/invoke.texi | 16 +
gcc/flag-types.h | 13 +
gcc/gengtype.c | 4 +-
gcc/langhooks.c | 9 +
gcc/langhooks.h | 1 +
gcc/opts.c | 26 ++
gcc/passes.c | 7 +-
gcc/testsuite/ChangeLog | 7 +
gcc/testsuite/gcc.dg/debug/ctf/ctf-1.c | 6 +
gcc/testsuite/gcc.dg/debug/ctf/ctf-preamble-1.c | 11 +
gcc/testsuite/gcc.dg/debug/ctf/ctf.exp | 41 ++
gcc/testsuite/gcc.dg/debug/dwarf2-ctf-1.c | 7 +
gcc/toplev.c | 18 +
include/ChangeLog | 4 +
include/ctf.h | 483 ++++++++++++++++++++++++
21 files changed, 913 insertions(+), 6 deletions(-)
create mode 100644 gcc/ctfout.c
create mode 100644 gcc/ctfout.h
create mode 100644 gcc/testsuite/gcc.dg/debug/ctf/ctf-1.c
create mode 100644 gcc/testsuite/gcc.dg/debug/ctf/ctf-preamble-1.c
create mode 100644 gcc/testsuite/gcc.dg/debug/ctf/ctf.exp
create mode 100644 gcc/testsuite/gcc.dg/debug/dwarf2-ctf-1.c
create mode 100644 include/ctf.h
--
1.8.3.1
