[gcc(refs/users/meissner/heads/work163-dmf)] Use vector pair load/store for memcpy with -mcpu=future

[Michael Meissner]

https://gcc.gnu.org/g:615936cbdb0e207b8629e84e1f86037ec956cba2

commit 615936cbdb0e207b8629e84e1f86037ec956cba2
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Mon Mar 18 22:58:56 2024 -0400

    Use vector pair load/store for memcpy with -mcpu=future
    
    In the development for the power10 processor, GCC did not enable using the load
    vector pair and store vector pair instructions when optimizing things like
    memory copy.  This patch enables using those instructions if -mcpu=future is
    used.
    
    2024-03-18  Michael Meissner  <meissner@linux.ibm.com>
    
    gcc/
    
            * config/rs6000/rs6000-cpus.def (ISA_FUTURE_MASKS_SERVER): Enable using
            load vector pair and store vector pair instructions for memory copy
            operations.
            (POWERPC_MASKS): Make the bit for enabling using load vector pair and
            store vector pair operations set and reset when the PowerPC processor is
            changed.

Diff:
---
 gcc/config/rs6000/rs6000-cpus.def | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/config/rs6000/rs6000-cpus.def b/gcc/config/rs6000/rs6000-cpus.def
index 47365534af8..4ddba142e44 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -90,6 +90,7 @@
 				  | OPTION_MASK_POWER11)
 
 #define ISA_FUTURE_MASKS_SERVER	(ISA_POWER11_MASKS_SERVER		\
+				 | OPTION_MASK_BLOCK_OPS_VECTOR_PAIR	\
 				 | OPTION_MASK_FUTURE)
 
 /* Flags that need to be turned off if -mno-vsx.  */
@@ -121,6 +122,7 @@
 
 /* Mask of all options to set the default isa flags based on -mcpu=<xxx>.  */
 #define POWERPC_MASKS		(OPTION_MASK_ALTIVEC			\
+				 | OPTION_MASK_BLOCK_OPS_VECTOR_PAIR	\
 				 | OPTION_MASK_CMPB			\
 				 | OPTION_MASK_CRYPTO			\
 				 | OPTION_MASK_DFP			\