[gcc r12-8749] RTEMS: Add -mvrsave multilibs

[Sebastian Huber]

https://gcc.gnu.org/g:3a83d005e5d23ae97704d13e615a087765b81699

commit r12-8749-g3a83d005e5d23ae97704d13e615a087765b81699
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Thu Sep 1 10:22:47 2022 +0200

    RTEMS: Add -mvrsave multilibs
    
    gcc/ChangeLog:
    
            * config/rs6000/rtems.h (CPP_OS_DEFAULT_SPEC): Define __PPC_VRSAVE__ if
            -mvrsave is present.
            * config/rs6000/t-rtems: Add -mvrsave multilib variants for
            -mcpu=e6500.

Diff:
---
 gcc/config/rs6000/rtems.h | 3 ++-
 gcc/config/rs6000/t-rtems | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/rtems.h b/gcc/config/rs6000/rtems.h
index d529e22f7de..84370150dc4 100644
--- a/gcc/config/rs6000/rtems.h
+++ b/gcc/config/rs6000/rtems.h
@@ -255,7 +255,8 @@
 %{mcpu=821:  %{!Dppc*: %{!Dmpc*: -Dmpc821}  } } \
 %{mcpu=860:  %{!Dppc*: %{!Dmpc*: -Dmpc860}  } } \
 %{mcpu=8540: %{!Dppc*: %{!Dmpc*: -Dppc8540}  } } \
-%{mcpu=e6500: -D__PPC_CPU_E6500__}"
+%{mcpu=e6500: -D__PPC_CPU_E6500__} \
+%{mvrsave: -D__PPC_VRSAVE__}"
 
 #undef	ASM_SPEC
 #define	ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
diff --git a/gcc/config/rs6000/t-rtems b/gcc/config/rs6000/t-rtems
index 4f8c147be3e..9da2da6154b 100644
--- a/gcc/config/rs6000/t-rtems
+++ b/gcc/config/rs6000/t-rtems
@@ -36,6 +36,9 @@ MULTILIB_DIRNAMES += nof
 MULTILIB_OPTIONS += mno-altivec
 MULTILIB_DIRNAMES += noaltivec
 
+MULTILIB_OPTIONS += mvrsave
+MULTILIB_DIRNAMES += vrsave
+
 MULTILIB_MATCHES  	+= ${MULTILIB_MATCHES_ENDIAN}
 MULTILIB_MATCHES	+= ${MULTILIB_MATCHES_SYSV}
 # Map 405 to 403
@@ -70,5 +73,7 @@ MULTILIB_REQUIRED += mcpu=7400/msoft-float
 MULTILIB_REQUIRED += mcpu=8540/msoft-float
 MULTILIB_REQUIRED += mcpu=860
 MULTILIB_REQUIRED += mcpu=e6500/m32
+MULTILIB_REQUIRED += mcpu=e6500/m32/mvrsave
 MULTILIB_REQUIRED += mcpu=e6500/m32/msoft-float/mno-altivec
 MULTILIB_REQUIRED += mcpu=e6500/m64
+MULTILIB_REQUIRED += mcpu=e6500/m64/mvrsave