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comparison src/cpu/x86/vm/stubGenerator_x86_32.cpp @ 6084:6759698e3140

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7133857: exp() and pow() should use the x87 ISA on x86 Summary: use x87 instructions to implement exp() and pow() in interpreter/c1/c2. Reviewed-by: kvn, never, twisti
author roland
date Tue, 15 May 2012 10:10:23 +0200
parents 22cee0ee8927
children 1d7922586cf6
comparison
equal deleted inserted replaced
6057:8f972594effc 6084:6759698e3140
2134 2134
2135 __ fld_d(Address(rsp, 4)); 2135 __ fld_d(Address(rsp, 4));
2136 __ trigfunc('t'); 2136 __ trigfunc('t');
2137 __ ret(0); 2137 __ ret(0);
2138 } 2138 }
2139 2139 {
2140 // The intrinsic version of these seem to return the same value as 2140 StubCodeMark mark(this, "StubRoutines", "exp");
2141 // the strict version. 2141 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc();
2142 StubRoutines::_intrinsic_exp = SharedRuntime::dexp; 2142
2143 StubRoutines::_intrinsic_pow = SharedRuntime::dpow; 2143 __ fld_d(Address(rsp, 4));
2144 __ exp_with_fallback(0);
2145 __ ret(0);
2146 }
2147 {
2148 StubCodeMark mark(this, "StubRoutines", "pow");
2149 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc();
2150
2151 __ fld_d(Address(rsp, 12));
2152 __ fld_d(Address(rsp, 4));
2153 __ pow_with_fallback(0);
2154 __ ret(0);
2155 }
2144 } 2156 }
2145 2157
2146 public: 2158 public:
2147 // Information about frame layout at time of blocking runtime call. 2159 // Information about frame layout at time of blocking runtime call.
2148 // Note that we only have to preserve callee-saved registers since 2160 // Note that we only have to preserve callee-saved registers since