https://gcc.gnu.org/g:91fa34772c822f13bcf1b84bbcb6c5ec8677209e
commit 91fa34772c822f13bcf1b84bbcb6c5ec8677209e
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Fri Nov 15 12:05:06 2024 -0500
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.
2024-11-15 Michael Meissner <meiss...@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 | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/config/rs6000/rs6000-cpus.def
b/gcc/config/rs6000/rs6000-cpus.def
index e73d9ef51f8d..74151be40484 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -86,7 +86,8 @@
#define POWER11_MASKS_SERVER ISA_3_1_MASKS_SERVER
-#define FUTURE_MASKS_SERVER POWER11_MASKS_SERVER
+#define FUTURE_MASKS_SERVER (POWER11_MASKS_SERVER \
+ | OPTION_MASK_BLOCK_OPS_VECTOR_PAIR)
/* Flags that need to be turned off if -mno-vsx. */
#define OTHER_VSX_VECTOR_MASKS (OPTION_MASK_EFFICIENT_UNALIGNED_VSX \
@@ -116,6 +117,7 @@
/* 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 \
