[binutils-gdb] MIPS/GAS: Correct `-O0' and `-O' option help, add `-O1' and `-O2'

[Maciej W.Rozycki]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=092a534fe14be3eda270256fb2799fd893a1f57c

commit 092a534fe14be3eda270256fb2799fd893a1f57c
Author: Maciej W. Rozycki <macro@mips.com>
Date:   Mon Jun 11 15:27:42 2018 +0100

    MIPS/GAS: Correct `-O0' and `-O' option help, add `-O1' and `-O2'
    
    Match commit 4ffff32f75b1 ("Match mips_optimize to the -O option
    supplied") and adjust `--help' output for `-O0', `-O', `-O1' and `-O2'
    options.
    
    	gas/
    	* config/tc-mips.c (md_show_usage): Correct help text for `-O0'
    	and `-O'.  Mention `-O1'.  Add `-O2' and its description.

Diff:
---
 gas/ChangeLog        | 5 +++++
 gas/config/tc-mips.c | 5 +++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index fcfaf65..6747b98 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2018-06-11  Maciej W. Rozycki  <macro@mips.com>
+
+	* config/tc-mips.c (md_show_usage): Correct help text for `-O0'
+	and `-O'.  Mention `-O1'.  Add `-O2' and its description.
+
 2018-06-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* config/tc-arm.c (arm_cpus): Add Cortex-A76 entry.
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 6c68395..50c4deb 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -20002,8 +20002,9 @@ MIPS options:\n\
 -mgp32			use 32-bit GPRs, regardless of the chosen ISA\n\
 -mfp32			use 32-bit FPRs, regardless of the chosen ISA\n\
 -msym32			assume all symbols have 32-bit values\n\
--O0			remove unneeded NOPs, do not swap branches\n\
--O			remove unneeded NOPs and swap branches\n\
+-O0			do not remove unneeded NOPs, do not swap branches\n\
+-O, -O1			remove unneeded NOPs, do not swap branches\n\
+-O2			remove unneeded NOPs and swap branches\n\
 --trap, --no-break	trap exception on div by 0 and mult overflow\n\
 --break, --no-trap	break exception on div by 0 and mult overflow\n"));
   fprintf (stream, _("\