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8343600: RISC-V: enable CRC32 intrinsic when either Zba or RVV are supported

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Reviewed-by: fyang
This commit is contained in:
Hamlin Li 2024-11-12 10:15:04 +00:00
parent 3727f40461
commit 2c1e4c3816
1 changed files with 18 additions and 16 deletions
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34
src/hotspot/cpu/riscv/vm_version_riscv.cpp
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@ -122,22 +122,6 @@ void VM_Version::common_initialize() {
FLAG_SET_DEFAULT(AllocatePrefetchDistance, 0);
}
if (UseZba) {
if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
FLAG_SET_DEFAULT(UseCRC32Intrinsics, true);
}
} else {
if (!FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
warning("CRC32 intrinsic requires Zba instructions (not available on this CPU)");
}
FLAG_SET_DEFAULT(UseCRC32Intrinsics, false);
}
if (UseCRC32CIntrinsics) {
warning("CRC32C intrinsics are not available on this CPU.");
FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
}
if (UseVectorizedMismatchIntrinsic) {
warning("VectorizedMismatch intrinsic is not available on this CPU.");
FLAG_SET_DEFAULT(UseVectorizedMismatchIntrinsic, false);
@ -217,6 +201,24 @@ void VM_Version::common_initialize() {
_initial_vector_length = cpu_vector_length();
}
}
// Misc Intrinsics could depend on RVV
if (UseZba || UseRVV) {
if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
FLAG_SET_DEFAULT(UseCRC32Intrinsics, true);
}
} else {
if (!FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
warning("CRC32 intrinsic requires Zba or RVV instructions (not available on this CPU)");
}
FLAG_SET_DEFAULT(UseCRC32Intrinsics, false);
}
if (UseCRC32CIntrinsics) {
warning("CRC32C intrinsics are not available on this CPU.");
FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
}
}
#ifdef COMPILER2