https://gcc.gnu.org/g:9764af0303d209a7ad828a13f58ad1a6c920142a
commit 9764af0303d209a7ad828a13f58ad1a6c920142a Author: Michael Meissner <meiss...@linux.ibm.com> Date: Thu Sep 12 16:35:38 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. 2024-09-12 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 \