[gcc r14-270] aix: Default AIX 7.2 to POWER7 server and AIX 7.3 to POWER8 server.

[gcc r14-270] aix: Default AIX 7.2 to POWER7 server and AIX 7.3 to POWER8 server.

[David Edelsohn]

https://gcc.gnu.org/g:469b655b30dae58b41232b0dea5d1ccc072356a9

commit r14-270-g469b655b30dae58b41232b0dea5d1ccc072356a9
Author: David Edelsohn <dje.gcc@gmail.com>
Date:   Sun Apr 23 11:22:06 2023 -0400

    aix: Default AIX 7.2 to POWER7 server and AIX 7.3 to POWER8 server.
    
    AIX 7.2 minimum ISA is POWER7 and AIX 7.3 minimum ISA is POWER8.
    This patch changes the aix72.h configuration to POWER7 with VSX enabled
    by default (with the AIX VSX ABI limitations), matching LLVM on AIX,
    and changes the aix73.h configuration to POWER8.
    
    gcc/ChangeLog:
            * config/rs6000/aix72.h (TARGET_DEFAULT): Use ISA_2_6_MASKS_SERVER.
            * config/rs6000/aix73.h (TARGET_DEFAULT): Use ISA_2_7_MASKS_SERVER.
            (PROCESSOR_DEFAULT): Use PROCESSOR_POWER8.
    
    Signed-off-by: David Edelsohn <dje.gcc@gmail.com>

Diff:
---
 gcc/config/rs6000/aix72.h | 4 ++--
 gcc/config/rs6000/aix73.h | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/gcc/config/rs6000/aix72.h b/gcc/config/rs6000/aix72.h
index 5ea89fc9340..3c72fc55629 100644
--- a/gcc/config/rs6000/aix72.h
+++ b/gcc/config/rs6000/aix72.h
@@ -138,9 +138,9 @@ do {									\
 
 #undef  TARGET_DEFAULT
 #ifdef RS6000_BI_ARCH
-#define TARGET_DEFAULT (ISA_2_6_MASKS_EMBEDDED | MASK_POWERPC64 | MASK_64BIT)
+#define TARGET_DEFAULT (ISA_2_6_MASKS_SERVER | MASK_POWERPC64 | MASK_64BIT)
 #else
-#define TARGET_DEFAULT ISA_2_6_MASKS_EMBEDDED
+#define TARGET_DEFAULT ISA_2_6_MASKS_SERVER
 #endif
 
 #undef  PROCESSOR_DEFAULT
diff --git a/gcc/config/rs6000/aix73.h b/gcc/config/rs6000/aix73.h
index 8cd93fa0df9..afbf52e4caf 100644
--- a/gcc/config/rs6000/aix73.h
+++ b/gcc/config/rs6000/aix73.h
@@ -139,15 +139,15 @@ do {									\
 
 #undef  TARGET_DEFAULT
 #ifdef RS6000_BI_ARCH
-#define TARGET_DEFAULT (ISA_2_6_MASKS_EMBEDDED | MASK_POWERPC64 | MASK_64BIT)
+#define TARGET_DEFAULT (ISA_2_7_MASKS_SERVER | MASK_POWERPC64 | MASK_64BIT)
 #else
-#define TARGET_DEFAULT ISA_2_6_MASKS_EMBEDDED
+#define TARGET_DEFAULT ISA_2_7_MASKS_SERVER
 #endif
 
 #undef  PROCESSOR_DEFAULT
-#define PROCESSOR_DEFAULT PROCESSOR_POWER7
+#define PROCESSOR_DEFAULT PROCESSOR_POWER8
 #undef  PROCESSOR_DEFAULT64
-#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
+#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8
 
 /* AIX 7.2 kernel and assembler have necessary support for Altivec and VSX.  */
 #undef OS_MISSING_ALTIVEC