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8334505: RISC-V: Several tests fail when MaxVectorSize does not match VM_Version::_initial_vector_length #19785

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8334505: RISC-V: Several tests fail when MaxVectorSize does not match VM_Version::_initial_vector_length #19785

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8334505: RISC-V: Several tests fail when MaxVectorSize does not match…
Jun 19, 2024
16428e7
Update warning log
Jun 21, 2024
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Update warning log
Jun 21, 2024
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Jun 21, 2024
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12 changes: 4 additions & 8 deletions src/hotspot/cpu/riscv/vm_version_riscv.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -327,15 +327,11 @@ void VM_Version::c2_initialize() {
FLAG_SET_DEFAULT(MaxVectorSize, 0);
FLAG_SET_DEFAULT(UseRVVForBigIntegerShiftIntrinsics, false);
} else {
if (FLAG_IS_DEFAULT(MaxVectorSize)) {
MaxVectorSize = _initial_vector_length;
} else if (!is_power_of_2(MaxVectorSize)) {
vm_exit_during_initialization(err_msg("Unsupported MaxVectorSize: %d, must be a power of 2", (int)MaxVectorSize));
} else if (MaxVectorSize > _initial_vector_length) {
warning("Current system only supports max RVV vector length %d. Set MaxVectorSize to %d",
_initial_vector_length, _initial_vector_length);
MaxVectorSize = _initial_vector_length;
if (!FLAG_IS_DEFAULT(MaxVectorSize) && MaxVectorSize != _initial_vector_length) {
warning("Current system does not support RVV vector length for MaxVectorSize %d. Set MaxVectorSize to %d",
(int)MaxVectorSize, _initial_vector_length);
}
MaxVectorSize = _initial_vector_length;
if (MaxVectorSize < 16) {
warning("RVV does not support vector length less than 16 bytes. Disabling RVV.");
UseRVV = false;
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