https://gcc.gnu.org/g:805a9d9c81d277706cc3a5e3270767d5f101aae6
commit 805a9d9c81d277706cc3a5e3270767d5f101aae6
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Tue Oct 22 16:54:35 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.
2024-10-22 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 51d5c39bad5f..23ca24b71b34 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -80,7 +80,8 @@
#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 \
@@ -110,6 +111,7 @@
/* 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 \
