LLVMFloatCompareNode.java

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package com.oracle.truffle.llvm.nodes.op.compare;

import com.oracle.truffle.api.CompilerAsserts;
import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.NodeChildren;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.ExplodeLoop;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;

@NodeChildren({@NodeChild(type = LLVMExpressionNode.class), @NodeChild(type = LLVMExpressionNode.class)})
public abstract class LLVMFloatCompareNode extends LLVMExpressionNode {

    @ExplodeLoop
    private static boolean areOrdered(float... vals) {
        CompilerAsserts.compilationConstant(vals.length);
        for (float val : vals) {
            if (Float.isNaN(val)) {
                return false;
            }
        }
        return true;
    }

    public abstract static class LLVMFloatOltNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 < val2) {
                assert areOrdered(val1, val2);
                return true;
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOgtNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 > val2) {
                assert areOrdered(val1, val2);
                return true;
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOgeNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 >= val2) {
                assert areOrdered(val1, val2);
                return true;
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOleNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 <= val2) {
                assert areOrdered(val1, val2);
                return true;
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOeqNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 == val2) {
                assert areOrdered(val1, val2);
                return true;
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOneNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            if (val1 != val2) {
                return areOrdered(val1, val2);
            } else {
                return false;
            }
        }
    }

    public abstract static class LLVMFloatOrdNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return areOrdered(val1, val2);
        }
    }

    public abstract static class LLVMFloatUeqNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !areOrdered(val1, val2) || val1 == val2;
        }
    }

    public abstract static class LLVMFloatUgtNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !(val1 <= val2);
        }
    }

    public abstract static class LLVMFloatUgeNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !(val1 < val2);
        }
    }

    public abstract static class LLVMFloatUleNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !(val1 > val2);
        }
    }

    public abstract static class LLVMFloatUltNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !(val1 >= val2);
        }
    }

    public abstract static class LLVMFloatUneNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !(val1 == val2);
        }
    }

    public abstract static class LLVMFloatUnoNode extends LLVMFloatCompareNode {
        @Specialization
        public boolean executeI1(float val1, float val2) {
            return !areOrdered(val1, val2);
        }
    }

}