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author | Eric Botcazou <ebotcazou@adacore.com> | 2019-11-06 10:57:18 +0000 |
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committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2019-11-06 10:57:18 +0000 |
commit | 3cf3da88be453f3fceaa596ee78be8d1e5aa21ca (patch) | |
tree | ead0ae87adfe46ab5e364107f3cfe9d60d9d3761 /gcc/flag-types.h | |
parent | 5d183d1740d8d8b84991f186ce4d992ee799536f (diff) | |
download | gcc-3cf3da88be453f3fceaa596ee78be8d1e5aa21ca.zip gcc-3cf3da88be453f3fceaa596ee78be8d1e5aa21ca.tar.gz gcc-3cf3da88be453f3fceaa596ee78be8d1e5aa21ca.tar.bz2 |
introduce -fcallgraph-info option
This was first submitted many years ago
https://gcc.gnu.org/ml/gcc-patches/2010-10/msg02468.html
The command line option -fcallgraph-info is added and makes the
compiler generate another output file (xxx.ci) for each compilation
unit (or LTO partitoin), which is a valid VCG file (you can launch
your favorite VCG viewer on it unmodified) and contains the "final"
callgraph of the unit. "final" is a bit of a misnomer as this is
actually the callgraph at RTL expansion time, but since most
high-level optimizations are done at the Tree level and RTL doesn't
usually fiddle with calls, it's final in almost all cases. Moreover,
the nodes can be decorated with additional info: -fcallgraph-info=su
adds stack usage info and -fcallgraph-info=da dynamic allocation info.
for gcc/ChangeLog
From Eric Botcazou <ebotcazou@adacore.com>, Alexandre Oliva <oliva@adacore.com>
* common.opt (-fcallgraph-info[=]): New option.
* doc/invoke.texi (Developer options): Document it.
* opts.c (common_handle_option): Handle it.
* builtins.c (expand_builtin_alloca): Record allocation if
-fcallgraph-info=da.
* calls.c (expand_call): If -fcallgraph-info, record the call.
(emit_library_call_value_1): Likewise.
* flag-types.h (enum callgraph_info_type): New type.
* explow.c: Include stringpool.h.
(set_stack_check_libfunc): Set SET_SYMBOL_REF_DECL on the symbol.
* function.c (allocate_stack_usage_info): New.
(allocate_struct_function): Call it for -fcallgraph-info.
(prepare_function_start): Call it otherwise.
(record_final_call, record_dynamic_alloc): New.
* function.h (struct callinfo_callee): New.
(CALLEE_FROM_CGRAPH_P): New.
(struct callinfo_dalloc): New.
(struct stack_usage): Add callees and dallocs.
(record_final_call, record_dynamic_alloc): Declare.
* gimplify.c (gimplify_decl_expr): Record dynamically-allocated
object if -fcallgraph-info=da.
* optabs-libfuncs.c (build_libfunc_function): Keep SYMBOL_REF_DECL.
* print-tree.h (print_decl_identifier): Declare.
(PRINT_DECL_ORIGIN, PRINT_DECL_NAME, PRINT_DECL_UNIQUE_NAME): New.
* print-tree.c: Include print-tree.h.
(print_decl_identifier): New function.
* toplev.c: Include print-tree.h.
(callgraph_info_file): New global variable.
(callgraph_info_external_printed): Likewise.
(output_stack_usage): Rename to...
(output_stack_usage_1): ... this. Make it static, add cf
parameter. If -fcallgraph-info=su, print stack usage to cf.
If -fstack-usage, use print_decl_identifier for
pretty-printing.
(INDIRECT_CALL_NAME): New.
(dump_final_node_vcg_start): New.
(dump_final_callee_vcg, dump_final_node_vcg): New.
(output_stack_usage): New.
(lang_dependent_init): Open and start file if
-fcallgraph-info. Allocated callgraph_info_external_printed.
(finalize): If callgraph_info_file is not null, finish it,
close it, and release callgraph_info_external_printed.
for gcc/ada/ChangeLog
* gcc-interface/misc.c (callgraph_info_file): Delete.
Co-Authored-By: Alexandre Oliva <oliva@adacore.com>
From-SVN: r277876
Diffstat (limited to 'gcc/flag-types.h')
-rw-r--r-- | gcc/flag-types.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/flag-types.h b/gcc/flag-types.h index a210328..b23d3a2 100644 --- a/gcc/flag-types.h +++ b/gcc/flag-types.h @@ -200,6 +200,22 @@ enum stack_check_type FULL_BUILTIN_STACK_CHECK }; +/* Type of callgraph information. */ +enum callgraph_info_type +{ + /* No information. */ + NO_CALLGRAPH_INFO = 0, + + /* Naked callgraph. */ + CALLGRAPH_INFO_NAKED = 1, + + /* Callgraph decorated with stack usage information. */ + CALLGRAPH_INFO_STACK_USAGE = 2, + + /* Callgraph decoration with dynamic allocation information. */ + CALLGRAPH_INFO_DYNAMIC_ALLOC = 4 +}; + /* Floating-point contraction mode. */ enum fp_contract_mode { FP_CONTRACT_OFF = 0, |