697 warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU.");
698 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
699 }
700
701 if (UseSHA256Intrinsics) {
702 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU.");
703 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
704 }
705
706 if (UseSHA512Intrinsics) {
707 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU.");
708 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
709 }
710
711 if (UseCRC32CIntrinsics) {
712 if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics))
713 warning("CRC32C intrinsics are not available on this CPU");
714 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
715 }
716
717 // Adjust RTM (Restricted Transactional Memory) flags
718 if (!supports_rtm() && UseRTMLocking) {
719 // Can't continue because UseRTMLocking affects UseBiasedLocking flag
720 // setting during arguments processing. See use_biased_locking().
721 // VM_Version_init() is executed after UseBiasedLocking is used
722 // in Thread::allocate().
723 vm_exit_during_initialization("RTM instructions are not available on this CPU");
724 }
725
726 #if INCLUDE_RTM_OPT
727 if (UseRTMLocking) {
728 if (is_intel_family_core()) {
729 if ((_model == CPU_MODEL_HASWELL_E3) ||
730 (_model == CPU_MODEL_HASWELL_E7 && _stepping < 3) ||
731 (_model == CPU_MODEL_BROADWELL && _stepping < 4)) {
732 // currently a collision between SKL and HSW_E3
733 if (!UnlockExperimentalVMOptions && UseAVX < 3) {
734 vm_exit_during_initialization("UseRTMLocking is only available as experimental option on this platform. It must be enabled via -XX:+UnlockExperimentalVMOptions flag.");
735 } else {
736 warning("UseRTMLocking is only available as experimental option on this platform.");
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697 warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU.");
698 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
699 }
700
701 if (UseSHA256Intrinsics) {
702 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU.");
703 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
704 }
705
706 if (UseSHA512Intrinsics) {
707 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU.");
708 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
709 }
710
711 if (UseCRC32CIntrinsics) {
712 if (!FLAG_IS_DEFAULT(UseCRC32CIntrinsics))
713 warning("CRC32C intrinsics are not available on this CPU");
714 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, false);
715 }
716
717 if (UseAdler32Intrinsics) {
718 warning("Adler32Intrinsics not available on this CPU.");
719 FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);
720 }
721
722 // Adjust RTM (Restricted Transactional Memory) flags
723 if (!supports_rtm() && UseRTMLocking) {
724 // Can't continue because UseRTMLocking affects UseBiasedLocking flag
725 // setting during arguments processing. See use_biased_locking().
726 // VM_Version_init() is executed after UseBiasedLocking is used
727 // in Thread::allocate().
728 vm_exit_during_initialization("RTM instructions are not available on this CPU");
729 }
730
731 #if INCLUDE_RTM_OPT
732 if (UseRTMLocking) {
733 if (is_intel_family_core()) {
734 if ((_model == CPU_MODEL_HASWELL_E3) ||
735 (_model == CPU_MODEL_HASWELL_E7 && _stepping < 3) ||
736 (_model == CPU_MODEL_BROADWELL && _stepping < 4)) {
737 // currently a collision between SKL and HSW_E3
738 if (!UnlockExperimentalVMOptions && UseAVX < 3) {
739 vm_exit_during_initialization("UseRTMLocking is only available as experimental option on this platform. It must be enabled via -XX:+UnlockExperimentalVMOptions flag.");
740 } else {
741 warning("UseRTMLocking is only available as experimental option on this platform.");
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