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 known_target value instruction references a constant;
10 (guidance) target and context are provided (no instructions removed)
11
12 self_access value instruction references "self" in a method;
13 (guidance) specified attribute name always has the same position;
14 appropriate instruction generated
15
16 temp_storage value instruction is a simple input operation;
17 (elimination) value instruction is the last instruction;
18 (guidance) remove the value instruction, provide the value
19 instruction in place of a temporary storage
20 reference
21
22 load_operations value instruction is a simple input operation;
23 (merge) value instruction is the last instruction;
24 current instruction uses simple input;
25 remove the value instruction, make the value
26 instruction the input to the current instruction
27
28 no_operations input to the current instruction loads from the
29 (elimination) destination of the current instruction;
30 omit the current instruction
31
32 unused_results value instruction is a simple input operation;
33 (elimination) value instruction is the final instruction of a
34 discarded expression;
35 remove the value instruction
