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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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6
hotspot/src/cpu/x86/vm/c1_LIRAssembler_x86.cpp
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@ -2446,6 +2446,12 @@ void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, L
// Should consider not saving rbx, if not necessary
__ trigfunc('t', op->as_Op2()->fpu_stack_size());
break;
case lir_exp :
__ exp_with_fallback(op->as_Op2()->fpu_stack_size());
break;
case lir_pow :
__ pow_with_fallback(op->as_Op2()->fpu_stack_size());
break;
default : ShouldNotReachHere();
}
} else {