CTF/BTF debug formats

[thirdparty/gcc.git] / gcc / dwarf2out.c

diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index e10006c50817ff60291fd2bac04242a16bcee06b..13998b2672fa47e06cf97ce7dd395920f4951d4b 100644 (file)
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -79,6 +79,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "output.h"
 #include "expr.h"
 #include "dwarf2out.h"
+#include "dwarf2ctf.h"
 #include "dwarf2asm.h"
 #include "toplev.h"
 #include "md5.h"
@@ -28332,7 +28333,10 @@ dwarf2out_source_line (unsigned int line, unsigned int column,
   dw_line_info_table *table;
   static var_loc_view lvugid;
 
-  if (debug_info_level < DINFO_LEVEL_TERSE)
+  /* 'line_info_table' information gathering is not needed when the debug
+     info level is set to the lowest value.  Also, the current DWARF-based
+     debug formats do not use this info.  */
+  if (debug_info_level < DINFO_LEVEL_TERSE || !dwarf_debuginfo_p ())
     return;
 
   table = cur_line_info_table;
@@ -31876,6 +31880,10 @@ dwarf2out_finish (const char *filename)
   unsigned char checksum[16];
   char dl_section_ref[MAX_ARTIFICIAL_LABEL_BYTES];
 
+  /* Skip emitting DWARF if not required.  */
+  if (!dwarf_debuginfo_p ())
+    return;
+
   /* Flush out any latecomers to the limbo party.  */
   flush_limbo_die_list ();
 
@@ -32631,6 +32639,19 @@ note_variable_value (dw_die_ref die)
   FOR_EACH_CHILD (die, c, note_variable_value (c));
 }
 
+/* Process DWARF dies for CTF generation.  */
+
+static void
+ctf_debug_do_cu (dw_die_ref die)
+{
+  dw_die_ref c;
+
+  if (!ctf_do_die (die))
+    return;
+
+  FOR_EACH_CHILD (die, c, ctf_do_die (c));
+}
+
 /* Perform any cleanups needed after the early debug generation pass
    has run.  */
 
@@ -32753,6 +32774,20 @@ dwarf2out_early_finish (const char *filename)
       print_die (comp_unit_die (), dump_file);
     }
 
+  /* Generate CTF/BTF debug info.  */
+  if ((ctf_debug_info_level > CTFINFO_LEVEL_NONE
+       || btf_debuginfo_p ()) && lang_GNU_C ())
+    {
+      ctf_debug_init ();
+      ctf_debug_do_cu (comp_unit_die ());
+      for (limbo_die_node *node = limbo_die_list; node; node = node->next)
+       ctf_debug_do_cu (node->die);
+      /* Post process the debug data in the CTF container if necessary.  */
+      ctf_debug_init_postprocess (btf_debuginfo_p ());
+      /* Emit CTF/BTF debug info.  */
+      ctf_debug_finalize (filename, btf_debuginfo_p ());
+    }
+
   /* Do not generate DWARF assembler now when not producing LTO bytecode.  */
   if ((!flag_generate_lto && !flag_generate_offload)
       /* FIXME: Disable debug info generation for (PE-)COFF targets since the