Codegen_C: buffer compilation needs to special-case scalar buffers #6442
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The existing code will emit something like `halide_dimension_t foo_buffer_shape[] = {};` for these, which is a zero-length array, which some compilers will (justifiably) say has no effect. We should be able to just use nullptr for the shape in these cases.
dsharletg
approved these changes
Nov 23, 2021
| stream << "halide_dimension_t(" << buffer.dim(i).min() | ||
| << ", " << buffer.dim(i).extent() | ||
| << ", " << buffer.dim(i).stride() << ")"; | ||
| if (i < buffer.dimensions() - 1) { |
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An alternative (maybe simpler) solution is to just emit a dummy default constructed halide_dimension_t, i.e. {{}}.
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True, but then we need to allocate a (trivial) amount of extra space for dimensions that shouldn't ever be used.
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The existing code will emit something like
halide_dimension_t foo_buffer_shape[] = {};for these, which is a zero-length array, which some compilers will (justifiably) say has no effect. We should be able to just use nullptr for the shape in these cases.