diff options
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/common.opt | 4 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 12 | ||||
| -rw-r--r-- | gcc/rtl.h | 2 | ||||
| -rw-r--r-- | gcc/toplev.c | 4 | ||||
| -rw-r--r-- | gcc/tree.h | 2 |
6 files changed, 30 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 01bd2b9..a53e7b8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,13 @@ 2017-12-12 Alexandre Oliva <aoliva@redhat.com> + * common.opt (gstatement-frontiers): New, setting + debug_nonbind_markers_p. + * rtl.h (MAY_HAVE_DEBUG_MARKER_INSNS): Activate. + * toplev.c (process_options): Autodetect value for debug statement + frontiers option. + * tree.h (MAY_HAVE_DEBUG_MARKER_STMTS): Activate. + * doc/invoke.texi (gstatement-frontiers, gno-statement-frontiers): New. + * cfgexpand.c (expand_gimple_basic_block): Handle begin stmt markers. Integrate source bind into debug stmt expand loop. (pass_expand::execute): Check debug marker limit. Avoid deep diff --git a/gcc/common.opt b/gcc/common.opt index 57b3cd7..d80ae5b 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -2936,6 +2936,10 @@ gstabs+ Common Driver JoinedOrMissing Negative(gvms) Generate debug information in extended STABS format. +gstatement-frontiers +Common Driver Var(debug_nonbind_markers_p) Init(2) +Emit progressive recommended breakpoint locations. + gstrict-dwarf Common Driver Report Var(dwarf_strict) Init(0) Don't emit DWARF additions beyond selected version. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 189b3e4..6402a5a 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -346,6 +346,7 @@ Objective-C and Objective-C++ Dialects}. -ggdb -grecord-gcc-switches -gno-record-gcc-switches @gol -gstabs -gstabs+ -gstrict-dwarf -gno-strict-dwarf @gol -gcolumn-info -gno-column-info @gol +-gstatement-frontiers -gno-statement-frontiers @gol -gvms -gxcoff -gxcoff+ -gz@r{[}=@var{type}@r{]} @gol -fdebug-prefix-map=@var{old}=@var{new} -fdebug-types-section @gol -fno-eliminate-unused-debug-types @gol @@ -7146,6 +7147,17 @@ Emit location column information into DWARF debugging information, rather than just file and line. This option is enabled by default. +@item -gstatement-frontiers +@item -gno-statement-frontiers +@opindex gstatement-frontiers +@opindex gno-statement-frontiers +This option causes GCC to create markers in the internal representation +at the beginning of statements, and to keep them roughly in place +throughout compilation, using them to guide the output of @code{is_stmt} +markers in the line number table. This is enabled by default when +compiling with optimization (@option{-Os}, @option{-O}, @option{-O2}, +@dots{}), and outputting DWARF 2 debug information at the normal level. + @item -gz@r{[}=@var{type}@r{]} @opindex gz Produce compressed debug sections in DWARF format, if that is supported. @@ -816,7 +816,7 @@ struct GTY(()) rtvec_def { #define NONDEBUG_INSN_P(X) (INSN_P (X) && !DEBUG_INSN_P (X)) /* Nonzero if DEBUG_MARKER_INSN_P may possibly hold. */ -#define MAY_HAVE_DEBUG_MARKER_INSNS 0 /* debug_nonbind_markers_p */ +#define MAY_HAVE_DEBUG_MARKER_INSNS debug_nonbind_markers_p /* Nonzero if DEBUG_BIND_INSN_P may possibly hold. */ #define MAY_HAVE_DEBUG_BIND_INSNS flag_var_tracking_assignments /* Nonzero if DEBUG_INSN_P may possibly hold. */ diff --git a/gcc/toplev.c b/gcc/toplev.c index 2f15496..b6e038d 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -1536,6 +1536,10 @@ process_options (void) warning_at (UNKNOWN_LOCATION, 0, "var-tracking-assignments changes selective scheduling"); + if (debug_nonbind_markers_p == AUTODETECT_VALUE) + debug_nonbind_markers_p = optimize && debug_info_level >= DINFO_LEVEL_NORMAL + && (write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG); + if (flag_tree_cselim == AUTODETECT_VALUE) { if (HAVE_conditional_move) @@ -1124,7 +1124,7 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int, ((int)TREE_INT_CST_LOW (VL_EXP_CHECK (NODE)->exp.operands[0])) /* Nonzero if gimple_debug_nonbind_marker_p() may possibly hold. */ -#define MAY_HAVE_DEBUG_MARKER_STMTS 0 /* debug_nonbind_markers_p */ +#define MAY_HAVE_DEBUG_MARKER_STMTS debug_nonbind_markers_p /* Nonzero if gimple_debug_bind_p() (and thus gimple_debug_source_bind_p()) may possibly hold. */ #define MAY_HAVE_DEBUG_BIND_STMTS flag_var_tracking_assignments |