https://gcc.gnu.org/g:385b09d7c32c2cb7a3d16f738e870d1d0bad6997
commit 385b09d7c32c2cb7a3d16f738e870d1d0bad6997
Author: Michael Meissner <meiss...@linux.ibm.com>
Date: Fri Mar 22 00:22:20 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.
2024-03-22 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 | 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 \
