MoveType.java revision 12651:6ef01bd40ce2 
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2398514Sluigipackage org.graalvm.compiler.lir.profiling;
2498514Sluigi
2598514Sluigiimport static jdk.vm.ci.code.ValueUtil.isRegister;
2698514Sluigiimport static jdk.vm.ci.code.ValueUtil.isStackSlot;
2798514Sluigi
2898514Sluigiimport org.graalvm.compiler.debug.GraalError;
2998514Sluigiimport org.graalvm.compiler.lir.StandardOp.LoadConstantOp;
3098514Sluigiimport org.graalvm.compiler.lir.StandardOp.MoveOp;
3198514Sluigiimport org.graalvm.compiler.lir.StandardOp.ValueMoveOp;
3298514Sluigi
3398514Sluigiimport jdk.vm.ci.meta.AllocatableValue;
3498514Sluigiimport jdk.vm.ci.meta.Value;
3598514Sluigi
3698514Sluigienum MoveType {
3798514Sluigi    REG2REG("Reg", "Reg"),
3898514Sluigi    STACK2REG("Reg", "Stack"),
39    CONST2REG("Reg", "Const"),
40    REG2STACK("Stack", "Reg"),
41    CONST2STACK("Stack", "Const"),
42    STACK2STACK("Stack", "Stack");
43
44    private final String name;
45
46    MoveType(String dst, String src) {
47        this.name = src + '2' + dst;
48    }
49
50    @Override
51    public String toString() {
52        return name;
53    }
54
55    public static MoveType get(MoveOp move) {
56        AllocatableValue dst = move.getResult();
57        Value src = null;
58        if (move instanceof LoadConstantOp) {
59            if (isRegister(dst)) {
60                return CONST2REG;
61            } else if (isStackSlot(dst)) {
62                return CONST2STACK;
63            }
64        } else if (move instanceof ValueMoveOp) {
65            src = ((ValueMoveOp) move).getInput();
66            if (isRegister(dst)) {
67                if (isRegister(src)) {
68                    return REG2REG;
69                } else if (isStackSlot(src)) {
70                    return STACK2REG;
71                }
72            } else if (isStackSlot(dst)) {
73                if (isRegister(src)) {
74                    return REG2STACK;
75                } else if (isStackSlot(src)) {
76                    return STACK2STACK;
77                }
78            }
79        }
80        throw GraalError.shouldNotReachHere(String.format("Unrecognized Move: %s dst=%s, src=%s", move, dst, src));
81    }
82}
83