[PATCH V4 4/5] CTF/BTF documentation

["Jose E. Marchesi" <jose.marchesi@oracle.com>]

This commit documents the new command line options introduced by the
CTF and BTF debug formats.

2021-02-18  Indu Bhagat  <indu.bhagat@oracle.com>

	* doc/invoke.texi: Document the CTF and BTF debug info options.
---
 gcc/doc/invoke.texi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 4bd4f390ded..9bed12b4fd6 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -461,6 +461,7 @@ Objective-C and Objective-C++ Dialects}.
 @item Debugging Options
 @xref{Debugging Options,,Options for Debugging Your Program}.
 @gccoptlist{-g  -g@var{level}  -gdwarf  -gdwarf-@var{version} @gol
+-gbtf -gctf  -gctf@var{level} @gol
 -ggdb  -grecord-gcc-switches  -gno-record-gcc-switches @gol
 -gstabs  -gstabs+  -gstrict-dwarf  -gno-strict-dwarf @gol
 -gas-loc-support  -gno-as-loc-support @gol
@@ -9657,6 +9658,25 @@ other DWARF-related options such as
 @option{-fno-dwarf2-cfi-asm}) retain a reference to DWARF Version 2
 in their names, but apply to all currently-supported versions of DWARF.
 
+@item -gbtf
+@opindex gbtf
+Request BTF debug information.
+
+@item -gctf
+@itemx -gctf@var{level}
+@opindex gctf
+Request CTF debug information and use level to specify how much CTF debug
+information should be produced.  If -gctf is specified without a value for
+level, the default level of CTF debug information is 2.
+
+Level 0 produces no CTF debug information at all.  Thus, -gctf0 negates -gctf.
+
+Level 1 produces CTF information for tracebacks only.  This includes callsite
+information, but does not include type information.
+
+Level 2 produces type information for entities (functions, data objects etc.)
+at file-scope or global-scope only.
+
 @item -gstabs
 @opindex gstabs
 Produce debugging information in stabs format (if that is supported),
-- 
2.25.0.2.g232378479e