Fix generated Neon simd_test features. #1367
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r? @Amanieu (rustbot has picked a reviewer for you, use r? to override) |
jacobbramley
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Hmm... |
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As @Nugine said, just remove the extra space in this PR. |
"arm" and "aarch64" support different sets of `target_feature` and `simd_test` arguments, and for "arm", the set of features that can be dynamically detected is different again. Restructure the generator code to allow this to be expressed accurately (in future patches). This implementation preserves the way that target features are specified for shared intrinsics, because this has an impact on the generated documentation. In particular, rustdoc cannot look inside `cfg_attr(target_arch = ...)` tests, so we use unconditional `target_feature` attributes where possible.
The tests can run if and only if the target_features for the corresponding intrinsics are detected at run-time, so make sure that the tests have an appropriate `simd_test()`. This fixes some failures due to tests running when they shouldn't. For example, some tests would fail on hardware that lacks "fcma".
jacobbramley
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Done. Sorry about the force-push; the whitespace fix wouldn't apply otherwise. |
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The tests can run if and only if the target_features for the corresponding intrinsics are detected at run-time, so make sure that the tests have an appropriate
simd_test().This fixes some failures due to tests running when they shouldn't. For example, some tests would fail on hardware that lacks "fcma".
This decouples the feature names in the generator, since "arm" and "arm64" use different names, and for "arm" the dynamic
simd_testfeatures don't match the statictarget_featurenames.There are several changes to the tests, but changes to the generated intrinsics themselves are minimal, and cosmetic.