gp21carry = regInfo{inputs: []regMask{gpg, gpg}, outputs: []regMask{gp, 0}}
		gp2flags  = regInfo{inputs: []regMask{gpg, gpg}}
		gp2flags1 = regInfo{inputs: []regMask{gp, gp}, outputs: []regMask{gp}}
		gp22      = regInfo{inputs: []regMask{gpg, gpg}, outputs: []regMask{gp, gp}}
		gp31      = regInfo{inputs: []regMask{gp, gp, gp}, outputs: []regMask{gp}}
		gp31carry = regInfo{inputs: []regMask{gp, gp, gp}, outputs: []regMask{gp, 0}}

        outputs.add(output);
    }

    /**
     * Returns concatenated non-empty output entries.
     */
    public String getOutput() {
        List<String> nonEmptyOutputs = filter(outputs, string -> !string.equals(""));
        return join("\n", nonEmptyOutputs);
    }

    /**
     * Returns all output entries.
     */
    public List<String> getOutputs() {
        return outputs;
    }

    /**

                void transform(TransformOutputs outputs) {
                    def input = inputArtifact.get().asFile
                    println "processing \${input.name} using \${parameters.someFiles*.name}"
                    def output = outputs.file(input.name + ".green")
                    def paramContent = parameters.someFiles.collect { it.file ? it.text : it.list().length }.join("")
                    output.text = input.text + paramContent + ".green"

public class OutputSnapshotUtil {

    /**
     * Finds outputs that are still present since the last execution when overlapping outputs are present.
     *
     * Note: when there are no overlapping outputs, all outputs currently existing in the output locations
     * are considered outputs of the work.
     *
     * If a property did not exist after the previous execution then all the outputs for it will be ignored.
     *

                @Override
                void transform(TransformOutputs outputs) {
                    // Simulate transform leaving file open
                    def output = outputs.file("output.txt")
                    output.createNewFile()
                    TestState.fileKeptOpen = output.newOutputStream()
                    TestState.fileKeptOpen << "output"
                    TestState.fileKeptOpen.flush()
                }

        withBuildCache().run "compileJava", "--info"

        then:
        noneSkipped()
        output.contains("Build cache key for task ':compileJava' is ")
        !output.contains("Appending implementation to build cache key:")
        !output.contains("Appending input value fingerprint for")
        !output.contains("Appending input file fingerprints for 'classpath'")
    }

     */
    DISABLE_CONDITION_SATISFIED,

    /**
     * The work has no outputs declared.
     */
    NO_OUTPUTS_DECLARED,

    /**
     * Work has declared output that is not cacheable.
     *
     * Reasons for non-cacheable outputs:
     * <ul>
     *     <li>an output contains a file tree,</li>
     *     <li>an output is not tracked.</li>
     * </ul>
     */
    NON_CACHEABLE_OUTPUT,

    /**

For the very same reason using `outputs.upToDateWhen` is discouraged and should be replaced by properly declaring the task's inputs.

=== Overlapping outputs

You already saw that <<build_cache_concepts.adoc#concepts_overlapping_outputs,overlapping outputs are a problem for task output caching>>.
When you add new tasks to your build or re-configure built-in tasks make sure you do not create overlapping outputs for cacheable tasks.

            hiddenNonBuildable = true;
            return;
        }
        StyledTextOutput output = builder.getOutput();
        GraphRenderer renderer = new GraphRenderer(output);
        renderer.visit(output1 -> {
            output1.withStyle(Identifier).text(component.getName());
            output1.withStyle(Description).text(" - Components that depend on " + component.getDisplayName());
        }, true);

    delete(layout.buildDirectory.file("outputs/1.txt"))
}
// end::removed-output[]

// tag::reverse[]
tasks.register<IncrementalReverseTask>("incrementalReverse") {
    inputDir = file("inputs")
    outputDir = layout.buildDirectory.dir("outputs")
    inputProperty = project.findProperty("taskInputProperty") as String? ?: "original"
}
// end::reverse[]