The driver amends assembler options with for example --gdwarf-5
when debugging is enabled but the check for that does not consider
the effect of -gtoggle which is not handled in the common option
machinery. The following alters debug_info_level according to
-gtoggle mimicing what process_options later does in the compiler.
This in particular avoids changing of the cc1-checksum with every
bootstrap (debug) cycle as we compute that from stage2 where we
use -g -gtoggle but with --gdwarf-5 and no debug info from the
compiler the assembler will fill the line table with the temporary
assembler file names.
Bootstrap and regtest pending on x86_64-unknown-linux-gnu, OK?
I've sofar verified the patch has the desired effect on --gdwarf-5
passing to the assembler for gcc -c t.c, gcc -c t.c -gtoggle,
gcc -c t.c -g -gtoggle and gcc -c t.c -g
Thanks,
Richard.
2021-07-09 Richard Biener <rguent...@suse.de>
PR driver/101383
* gcc.c (process_command): Process -gtoggle like process_options
would after parsing options.
---
gcc/gcc.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 36a88fc99b0..6c7a4847c43 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -4924,6 +4924,16 @@ process_command (unsigned int decoded_options_count,
#endif
}
+ /* Handle -gtoggle as it would later in toplev.c:process_options to
+ make the debug-level-gt spec function work as expected. */
+ if (flag_gtoggle)
+ {
+ if (debug_info_level == DINFO_LEVEL_NONE)
+ debug_info_level = DINFO_LEVEL_NORMAL;
+ else
+ debug_info_level = DINFO_LEVEL_NONE;
+ }
+
if (output_file
&& strcmp (output_file, "-") != 0
&& strcmp (output_file, HOST_BIT_BUCKET) != 0)
--
2.26.2
