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| author | Cary Coutant <ccoutant@google.com> | 2009-10-08 21:00:04 +0000 |
|---|---|---|
| committer | Cary Coutant <ccoutant@gcc.gnu.org> | 2009-10-08 14:00:04 -0700 |
| commit | 77831620cf45a82c54a85091dcdc9e0affea47a9 (patch) | |
| tree | d4e268cc74aaa313626c0a3a838960f89e919d48 /gcc/debug.h | |
| parent | 968e57283eda9b6f9eb513b0e8572c8a9efaa79f (diff) | |
| download | gcc-77831620cf45a82c54a85091dcdc9e0affea47a9.zip gcc-77831620cf45a82c54a85091dcdc9e0affea47a9.tar.gz gcc-77831620cf45a82c54a85091dcdc9e0affea47a9.tar.bz2 | |
Add support for debugging with ICF (Identical Code Folding).
gcc/ChangeLog:
Add support for debugging with ICF (Identical Code Folding).
* calls.c (debug.h): New #include.
(emit_call_1): Call virtual_call_token debug hook.
* common.opt (-fenable-icf-debug): New option.
* dwarf2out.c (dwarf2_debug_hooks): Add entries for new hooks (two
locations in the source).
(poc_label_num): New variable.
(dcall_entry, vcall_entry): New typedefs.
(dcall_table, vcall_table): New variables.
(struct vcall_insn): New type.
(vcall_insn_table): New variable.
(DEBUG_DCALL_SECTION, DEBUG_VCALL_SECTION): New macros.
(size_of_dcall_table): New function.
(output_dcall_table): New function.
(size_of_vcall_table): New function.
(output_vcall_table): New function.
(dwarf2out_direct_call): New function.
(vcall_insn_table_hash): New function.
(vcall_insn_table_eq): New function.
(dwarf2out_virtual_call_token): New function.
(dwarf2out_virtual_call): New function.
(dwarf2out_init): Allocate new tables and sections.
(prune_unused_types): Mark DIEs referenced from direct call table.
(dwarf2out_finish): Output direct and virtual call tables.
* final.c (final_scan_insn): Call direct_call and virtual_call
debug hooks.
* debug.h (struct gcc_debug_hooks): Add direct_call,
virtual_call_token, virtual_call hooks.
(debug_nothing_uid): New function.
* debug.c (do_nothing_debug_hooks): Add dummy entries for new hooks.
(debug_nothing_uid): New function.
* dbxout.c (dbx_debug_hooks): Add dummy entries for new hooks.
* sdbout.c (sdb_debug_hooks): Likewise.
* vmsdbgout.c (vmsdbg_debug_hooks): Likewise.
* doc/invoke.texi (-fenable-icf-debug): New option.
gcc/testsuite/ChangeLog:
Add support for debugging with ICF (Identical Code Folding).
* g++.dg/debug/dwarf2/icf.C: New test.
From-SVN: r152577
Diffstat (limited to 'gcc/debug.h')
| -rw-r--r-- | gcc/debug.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/debug.h b/gcc/debug.h index de525fe..4009cd6 100644 --- a/gcc/debug.h +++ b/gcc/debug.h @@ -126,6 +126,25 @@ struct gcc_debug_hooks text sections. */ void (* switch_text_section) (void); + /* Records a direct call to the function DECL, noting the point of call + and the debug info for the function. Called from final_scan_insn + when ICF debugging is enabled. */ + void (* direct_call) (tree decl); + + /* Records the OBJ_TYPE_REF_TOKEN for a virtual call through ADDR, which + for C++ is the vtable slot index, noting the INSN_UID for the call + instruction. Called from calls.c:emit_call_1 when ICF debugging is + enabled. It's necessary to do this during lowering because the + call instruction and the OBJ_TYPE_REF become separated after that + point. */ + void (* virtual_call_token) (tree addr, int insn_uid); + + /* Records a virtual call given INSN_UID, which is the UID of the call + instruction. The UID is then mapped to the vtable slot index noted + during the lowering phase. Called from final_scan_insn when ICF + debugging is enabled. */ + void (* virtual_call) (int insn_uid); + /* Called from grokdeclarator. Replaces the anonymous name with the type name. */ void (* set_name) (tree, tree); @@ -151,6 +170,7 @@ extern void debug_nothing_tree_int (tree, int); extern void debug_nothing_tree_tree_tree_bool (tree, tree, tree, bool); extern bool debug_true_const_tree (const_tree); extern void debug_nothing_rtx (rtx); +extern void debug_nothing_uid (int); /* Hooks for various debug formats. */ extern const struct gcc_debug_hooks do_nothing_debug_hooks; |