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8266950: Remove vestigial support for non-strict floating-point execution

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Co-authored-by: Vladimir Ivanov <vlivanov@openjdk.org>
Reviewed-by: vlivanov, kvn
This commit is contained in:
David Holmes 2021-06-01 22:04:02 +00:00
parent 8624cb53cd
commit cb7128b58e
43 changed files with 93 additions and 309 deletions
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32
src/hotspot/cpu/x86/templateTable_x86.cpp
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@ -1633,41 +1633,21 @@ void TemplateTable::dop2(Operation op) {
case add: __ fadd_d (at_rsp()); break;
case sub: __ fsubr_d(at_rsp()); break;
case mul: {
Label L_strict;
Label L_join;
const Address access_flags (rcx, Method::access_flags_offset());
__ get_method(rcx);
__ movl(rcx, access_flags);
__ testl(rcx, JVM_ACC_STRICT);
__ jccb(Assembler::notZero, L_strict);
__ fmul_d (at_rsp());
__ jmpb(L_join);
__ bind(L_strict);
__ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
// strict semantics
__ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias1()));
__ fmulp();
__ fmul_d (at_rsp());
__ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
__ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias2()));
__ fmulp();
__ bind(L_join);
break;
}
case div: {
Label L_strict;
Label L_join;
const Address access_flags (rcx, Method::access_flags_offset());
__ get_method(rcx);
__ movl(rcx, access_flags);
__ testl(rcx, JVM_ACC_STRICT);
__ jccb(Assembler::notZero, L_strict);
__ fdivr_d(at_rsp());
__ jmp(L_join);
__ bind(L_strict);
__ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
// strict semantics
__ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias1()));
__ fmul_d (at_rsp());
__ fdivrp();
__ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
__ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias2()));
__ fmulp();
__ bind(L_join);
break;
}
case rem: __ fld_d (at_rsp()); __ fremr(rax); break;