gcc/ChangeLog:

* common.opt (fcompare-debug=, fcompare-debug-second): New.
(fdump-final-insns=, gtoggle): New.
* doc/invoke.texi: Document them.
* final.c (rest_of_clean_state): Dump final insn stream.
* gcc.c (invoke_as): Hook in -fcompare-debug.
(static_spec_functions): Add compare-debug-dump-opt,
compare-debug-self-opt and compare-debug-auxbase-opt.
(compare_debug, compare_debug_second, compare_debug_opt): New.
(switches_debug_check, n_switches_debug_check): New.
(debug_auxbase_opt, debug_check_temp_file): New.
(process_command): Handle -fno-compare-debug, -fcompare-debug and
-fcompare-debug=*.
(do_self_spec): Handle arguments after switches.
(do_spec_1): Add .gk extension to temp file basenames for compare.
(check_live_switch): Take SWITCH_IGNORE into account, and earlier.
(cc1_options): Use it instead of normal auxbase computation for
the second compare-debug compilation.
(compare_files): New.
(main): Set up and implement compare debug mode.
(compare_debug_dump_opt_spec_function): New.
(compare_debug_self_opt_spec_function): New.
(compare_debug_auxbase_opt_spec_function): New.
* toplev.c (process_options): Handle flag_gtoggle,
flag_dump_final_insns.
* coverage.c (coverage_begin_output): Don't overwrite .gcno file
during -fcompare-debug-second compilation.
gcc/cp/ChangeLog:
* repo.c (get_base_filename): Use aux_base_name rather than
alternate temporary file during second compare debug compilation.
(finish_repo): Skip during -fcompare-debug-second.
gcc/ada/ChangeLog:
* lib-writ.adb (flag_compare_debug): Import.
(Write_ALI): Skip during -fcompare-debug-second.
gcc/fortran/ChangeLog:
* options.c (gfc_post_options): Disable dump_parse_tree
during -fcompare-debug-second.
gcc/objc/ChangeLog:
* objc-act.c (objc_init): Skip print_struct_values during
-fcompare-debug-second.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@148271 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 0 deletions

diff --git a/gcc/common.opt b/gcc/common.opt
index ee7e0bd7cea..f7248907e1a 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -384,6 +384,14 @@ fconserve-stack
 Common Var(flag_conserve_stack) Optimization
 Do not perform optimizations increasing noticeably stack usage
 
+fcompare-debug=
+Common JoinedOrMissing RejectNegative Var(flag_compare_debug_opt)
+-fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump
+
+fcompare-debug-second
+Common RejectNegative Var(flag_compare_debug)
+Run only the second compilation of -fcompare-debug
+
 fcprop-registers
 Common Report Var(flag_cprop_registers) Optimization
 Perform a register copy-propagation optimization pass
@@ -450,6 +458,10 @@ fdump-
 Common Joined RejectNegative
 -fdump-<type>	Dump various compiler internals to a file
 
+fdump-final-insns=
+Common RejectNegative Joined Var(flag_dump_final_insns)
+-fdump-final-insns=filename	Dump to filename the insns at the end of translation
+
 fdump-noaddr
 Common Report Var(flag_dump_noaddr)
 Suppress output of addresses in debugging dumps
@@ -1417,6 +1429,10 @@ gstabs+
 Common JoinedOrMissing Negative(gvms)
 Generate debug information in extended STABS format
 
+gtoggle
+Common Report Var(flag_gtoggle)
+Toggle debug information generation
+
 gvms
 Common JoinedOrMissing Negative(gxcoff)
 Generate debug information in VMS format