34 int AbstractInterpreter::BasicType_as_index(BasicType type) {
35 int i = 0;
36 switch (type) {
37 case T_BOOLEAN: i = 0; break;
38 case T_CHAR : i = 1; break;
39 case T_BYTE : i = 2; break;
40 case T_SHORT : i = 3; break;
41 case T_INT : i = 4; break;
42 case T_LONG : i = 5; break;
43 case T_VOID : i = 6; break;
44 case T_FLOAT : i = 7; break;
45 case T_DOUBLE : i = 8; break;
46 case T_OBJECT : i = 9; break;
47 case T_ARRAY : i = 9; break;
48 default : ShouldNotReachHere();
49 }
50 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
51 return i;
52 }
53
54 // Support abs and sqrt like in compiler.
55 // For others we can use a normal (native) entry.
56 bool AbstractInterpreter::math_entry_available(AbstractInterpreter::MethodKind kind) {
57 if (!InlineIntrinsics) return false;
58
59 return ((kind==Interpreter::java_lang_math_sqrt && VM_Version::has_fsqrt()) ||
60 (kind==Interpreter::java_lang_math_abs));
61 }
62
63 // These should never be compiled since the interpreter will prefer
64 // the compiled version to the intrinsic version.
65 bool AbstractInterpreter::can_be_compiled(methodHandle m) {
66 return !math_entry_available(method_kind(m));
67 }
68
69 // How much stack a method activation needs in stack slots.
70 // We must calc this exactly like in generate_fixed_frame.
71 // Note: This returns the conservative size assuming maximum alignment.
72 int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
73 const int max_alignment_size = 2;
74 const int abi_scratch = frame::abi_reg_args_size;
75 return method->max_locals() + method->max_stack() +
76 frame::interpreter_frame_monitor_size() + max_alignment_size + abi_scratch;
77 }
78
79 // Returns number of stackElementWords needed for the interpreter frame with the
80 // given sections.
81 // This overestimates the stack by one slot in case of alignments.
82 int AbstractInterpreter::size_activation(int max_stack,
83 int temps,
84 int extra_args,
85 int monitors,
86 int callee_params,
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34 int AbstractInterpreter::BasicType_as_index(BasicType type) {
35 int i = 0;
36 switch (type) {
37 case T_BOOLEAN: i = 0; break;
38 case T_CHAR : i = 1; break;
39 case T_BYTE : i = 2; break;
40 case T_SHORT : i = 3; break;
41 case T_INT : i = 4; break;
42 case T_LONG : i = 5; break;
43 case T_VOID : i = 6; break;
44 case T_FLOAT : i = 7; break;
45 case T_DOUBLE : i = 8; break;
46 case T_OBJECT : i = 9; break;
47 case T_ARRAY : i = 9; break;
48 default : ShouldNotReachHere();
49 }
50 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
51 return i;
52 }
53
54 // These should never be compiled since the interpreter will prefer
55 // the compiled version to the intrinsic version.
56 bool AbstractInterpreter::can_be_compiled(methodHandle m) {
57 switch (method_kind(m)) {
58 case Interpreter::java_lang_math_sin : // fall thru
59 case Interpreter::java_lang_math_cos : // fall thru
60 case Interpreter::java_lang_math_tan : // fall thru
61 case Interpreter::java_lang_math_abs : // fall thru
62 case Interpreter::java_lang_math_log : // fall thru
63 case Interpreter::java_lang_math_log10 : // fall thru
64 case Interpreter::java_lang_math_sqrt : // fall thru
65 case Interpreter::java_lang_math_pow : // fall thru
66 case Interpreter::java_lang_math_exp : // fall thru
67 case Interpreter::java_lang_math_fmaD : // fall thru
68 case Interpreter::java_lang_math_fmaF :
69 return false;
70 default:
71 return true;
72 }
73 }
74
75 // How much stack a method activation needs in stack slots.
76 // We must calc this exactly like in generate_fixed_frame.
77 // Note: This returns the conservative size assuming maximum alignment.
78 int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
79 const int max_alignment_size = 2;
80 const int abi_scratch = frame::abi_reg_args_size;
81 return method->max_locals() + method->max_stack() +
82 frame::interpreter_frame_monitor_size() + max_alignment_size + abi_scratch;
83 }
84
85 // Returns number of stackElementWords needed for the interpreter frame with the
86 // given sections.
87 // This overestimates the stack by one slot in case of alignments.
88 int AbstractInterpreter::size_activation(int max_stack,
89 int temps,
90 int extra_args,
91 int monitors,
92 int callee_params,
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