Examples with CPUFeature jdk.vm.ci.amd64.AMD64.CPUFeature used on opensource projects

Example 1 with CPUFeature

use of jdk.vm.ci.amd64.AMD64.CPUFeature in project graal by oracle.

the class SubstrateGraalUtils method updateGraalArchitectureWithHostCPUFeatures.

/**
 * Updates the architecture in Graal at run-time in order to enable best code generation on the
 * given machine.
 *
 * Note: this method is not synchronized as it only introduces new features to the enum map
 * which is backed by an array. If two threads repeat the work nothing can go wrong.
 *
 * @param graalBackend The graal backend that should be updated.
 */
public static void updateGraalArchitectureWithHostCPUFeatures(Backend graalBackend) {
    if (SubstrateUtil.HOSTED) {
        throw shouldNotReachHere("Architecture should be updated only at runtime.");
    }
    if (!architectureInitialized) {
        architectureInitialized = true;
        AMD64CPUFeatureAccess.verifyHostSupportsArchitecture(graalBackend.getCodeCache().getTarget().arch);
        AMD64 architecture = (AMD64) graalBackend.getCodeCache().getTarget().arch;
        EnumSet<AMD64.CPUFeature> features = AMD64CPUFeatureAccess.determineHostCPUFeatures();
        architecture.getFeatures().addAll(features);
    }
}

Example 2 with CPUFeature

use of jdk.vm.ci.amd64.AMD64.CPUFeature in project graal by oracle.

the class NativeImageGenerator method createTarget.

public static TargetDescription createTarget(Platform platform) {
    if (includedIn(platform, Platform.AMD64.class)) {
        Architecture architecture;
        if (NativeImageOptions.NativeArchitecture.getValue()) {
            architecture = GraalAccess.getOriginalTarget().arch;
        } else {
            EnumSet<AMD64.CPUFeature> features = EnumSet.noneOf(AMD64.CPUFeature.class);
            // SSE and SSE2 are added by defaults as they are required by Graal
            features.add(AMD64.CPUFeature.SSE);
            features.add(AMD64.CPUFeature.SSE2);
            features.addAll(parseCSVtoEnum(AMD64.CPUFeature.class, NativeImageOptions.CPUFeatures.getValue()));
            architecture = new AMD64(features, SubstrateTargetDescription.allFlags());
        }
        assert architecture instanceof AMD64 : "SVM supports only AMD64 architectures.";
        return new SubstrateTargetDescription(architecture, true, 16, 0, false);
    } else {
        throw UserError.abort("Architecture specified by platform is not supported: " + platform.getClass().getTypeName());
    }
}

Example 3 with CPUFeature

use of jdk.vm.ci.amd64.AMD64.CPUFeature in project graal by oracle.

the class AMD64CPUFeatureAccess method verifyHostSupportsArchitecture.

public static void verifyHostSupportsArchitecture(Architecture imageArchitecture) {
    AMD64 architecture = (AMD64) imageArchitecture;
    EnumSet<AMD64.CPUFeature> features = determineHostCPUFeatures();
    if (!features.containsAll(architecture.getFeatures())) {
        List<AMD64.CPUFeature> missingFeatures = new ArrayList<>();
        for (AMD64.CPUFeature feature : architecture.getFeatures()) {
            if (!features.contains(feature)) {
                missingFeatures.add(feature);
            }
        }
        throw VMError.shouldNotReachHere("Current target does not support the following CPU features that are required by the image: " + missingFeatures);
    }
}

Example 4 with CPUFeature

use of jdk.vm.ci.amd64.AMD64.CPUFeature in project graal by oracle.

the class AMD64ArrayCompareToOp method supportsAVX512VLBW.

private static boolean supportsAVX512VLBW(TargetDescription target) {
    AMD64 arch = (AMD64) target.arch;
    EnumSet<CPUFeature> features = arch.getFeatures();
    return features.contains(CPUFeature.AVX512BW) && features.contains(CPUFeature.AVX512VL);
}