https://gcc.gnu.org/g:e9f36e1c173a1967318ccfc2341e46b526d6f0aa
commit e9f36e1c173a1967318ccfc2341e46b526d6f0aa Author: Michael Meissner <meiss...@linux.ibm.com> Date: Fri Mar 22 00:16:39 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 \