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7133857: exp() and pow() should use the x87 ISA on x86

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Use x87 instructions to implement exp() and pow() in interpreter/c1/c2.

Reviewed-by: kvn, never, twisti
This commit is contained in:
Roland Westrelin 2012-05-15 10:10:23 +02:00
parent eb4a860bc3
commit b305cf722e
26 changed files with 783 additions and 279 deletions
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20
hotspot/src/cpu/x86/vm/stubGenerator_x86_32.cpp
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@ -2136,11 +2136,23 @@ class StubGenerator: public StubCodeGenerator {
__ trigfunc('t');
__ ret(0);
}
{
StubCodeMark mark(this, "StubRoutines", "exp");
StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc();
// The intrinsic version of these seem to return the same value as
// the strict version.
StubRoutines::_intrinsic_exp = SharedRuntime::dexp;
StubRoutines::_intrinsic_pow = SharedRuntime::dpow;
__ fld_d(Address(rsp, 4));
__ exp_with_fallback(0);
__ ret(0);
}
{
StubCodeMark mark(this, "StubRoutines", "pow");
StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc();
__ fld_d(Address(rsp, 12));
__ fld_d(Address(rsp, 4));
__ pow_with_fallback(0);
__ ret(0);
}
}
public: