https://gcc.gnu.org/g:6dc9fbec1e132a8ce0282f02e70d26881de43e21
commit 6dc9fbec1e132a8ce0282f02e70d26881de43e21
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Fri Nov 15 23:31:12 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 e2e7c5ff1911..62e6c9d3b589 100644
--- a/gcc/config/rs6000/rs6000-cpus.def
+++ b/gcc/config/rs6000/rs6000-cpus.def
@@ -90,7 +90,8 @@
| OPTION_MASK_POWER11)
#define FUTURE_MASKS_SERVER (POWER11_MASKS_SERVER \
- | OPTION_MASK_FUTURE)
+ | OPTION_MASK_FUTURE \
+ | 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 \
@@ -120,6 +121,7 @@
/* 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 \
