[gcc r14-230] recog.cc: Correct comments referring to parameter match_len

[Hans-Peter Nilsson <hp@gcc.gnu.org>]

https://gcc.gnu.org/g:064eed39d232b0984a0199a6163e3db68e41671f

commit r14-230-g064eed39d232b0984a0199a6163e3db68e41671f
Author: Hans-Peter Nilsson <hp@axis.com>
Date:   Wed Apr 19 17:45:57 2023 +0200

    recog.cc: Correct comments referring to parameter match_len
    
            * recog.cc (peep2_attempt, peep2_update_life): Correct
            head-comment description of parameter match_len.

Diff:
---
 gcc/recog.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/recog.cc b/gcc/recog.cc
index 3ddeab59d92..fd09145d45e 100644
--- a/gcc/recog.cc
+++ b/gcc/recog.cc
@@ -3850,7 +3850,7 @@ copy_frame_info_to_split_insn (rtx_insn *old_insn, rtx_insn *new_insn)
   maybe_copy_prologue_epilogue_insn (old_insn, new_insn);
 }
 
-/* While scanning basic block BB, we found a match of length MATCH_LEN,
+/* While scanning basic block BB, we found a match of length MATCH_LEN + 1,
    starting at INSN.  Perform the replacement, removing the old insns and
    replacing them with ATTEMPT.  Returns the last insn emitted, or NULL
    if the replacement is rejected.  */
@@ -4036,7 +4036,7 @@ peep2_attempt (basic_block bb, rtx_insn *insn, int match_len, rtx_insn *attempt)
 /* After performing a replacement in basic block BB, fix up the life
    information in our buffer.  LAST is the last of the insns that we
    emitted as a replacement.  PREV is the insn before the start of
-   the replacement.  MATCH_LEN is the number of instructions that were
+   the replacement.  MATCH_LEN + 1 is the number of instructions that were
    matched, and which now need to be replaced in the buffer.  */
 
 static void