1 Optimisation Prerequisites and Effect
2 ------------ ------------------------
3
4 constant_storage value instruction references a constant;
5 (elimination) storage instruction references a constant;
6 remove both instructions (currently a single
7 merged instruction)
8
9 source_storage source instruction is a simple input operation;
10 (elimination) source instruction is the last instruction;
11 remove the source instruction
12
13 known_target value instruction references a constant;
14 (guidance) target and context are provided (no instructions removed)
15
16 self_access value instruction references "self" in a method;
17 (guidance) specified attribute name always has the same position;
18 appropriate instruction generated
19
20 temp_storage value instruction is a simple input operation;
21 (elimination) value instruction is the last instruction;
22 (guidance) remove the value instruction, provide the value
23 instruction in place of a temporary storage
24 reference
25
26 load_operations value instruction is a simple input operation;
27 (merge) value instruction is the last instruction;
28 current instruction uses simple input;
29 remove the value instruction, make the value
30 instruction the input to the current instruction
31
32 no_operations input to the current instruction loads from the
33 (elimination) destination of the current instruction;
34 omit the current instruction
35
36 unused_results value instruction is a simple input operation;
37 (elimination) value instruction is the final instruction of a
38 discarded expression;
39 remove the value instruction
