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| author | Ken Raeburn <raeburn@cygnus.com> | 1998-07-30 10:38:22 +0000 |
|---|---|---|
| committer | Ken Raeburn <raeburn@gcc.gnu.org> | 1998-07-30 10:38:22 +0000 |
| commit | 07417085a14349cde788c5cc10663815da40c26f (patch) | |
| tree | 026e48c190a03450b58622639d6f3e00ed5ec047 /gcc/toplev.c | |
| parent | 6bcf8e5a040d2ce78eba4b4a143a216e2cea4ab5 (diff) | |
| download | gcc-07417085a14349cde788c5cc10663815da40c26f.zip gcc-07417085a14349cde788c5cc10663815da40c26f.tar.gz gcc-07417085a14349cde788c5cc10663815da40c26f.tar.bz2 | |
Function entry/exit profiling instrumentation:
* expr.h (profile_function_entry_libfunc, profile_function_exit_libfunc):
Declare new variables.
* optabs.c: Define them here.
(init_optabs): Initialize them.
* tree.h (struct tree_decl): New flag no_instrument_function_entry_exit.
(DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT): New accessor macro.
* c-decl.c (duplicate_decls): Merge it.
* c-common.c (enum attrs): New value A_NO_INSTRUMENT_FUNCTION.
(init_attributes): Use it for "no_instrument_function".
(decl_attributes): Handle it, for functions that have not yet been compiled.
Set decl flag.
* flags.h (flag_instrument_function_entry_exit): Declare new variable.
* toplev.c (flag_instrument_function_entry_exit): Define it here.
(f_options): New option "instrument-functions".
* function.h (struct function): New field instrument_entry_exit.
* function.c (current_function_instrument_entry_exit): New variable.
(push_function_context_to, pop_function_context_from): Save and restore.
(expand_function_start): Set current_ variable, maybe emit return label and
entry profile call.
(expand_function_end): Maybe emit exit profile call.
Testsuite:
* gcc.c-torture/special/eeprof-1.c: New test, for -finstrument-functions.
* gcc.c-torture/special/special.exp: Run it.
From-SVN: r21495
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 266a209..9ab6435 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -723,6 +723,9 @@ int flag_strict_aliasing = 0; extern int flag_dump_unnumbered; +/* Instrument functions with calls at entry and exit, for profiling. */ +int flag_instrument_function_entry_exit = 0; + /* Table of supported debugging formats. */ static struct @@ -908,7 +911,9 @@ lang_independent_options f_options[] = "Generate code to check every memory access" }, {"prefix-function-name", &flag_prefix_function_name, 1, "Add a prefix to all function names" }, - {"dump-unnumbered", &flag_dump_unnumbered, 1} + {"dump-unnumbered", &flag_dump_unnumbered, 1}, + {"instrument-functions", &flag_instrument_function_entry_exit, 1, + "Instrument function entry/exit with profiling calls"}, }; #define NUM_ELEM(a) (sizeof (a) / sizeof ((a)[0])) |