Support for [lsb+:width] slices #4917
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- allows for non-const lsb slices (width must still be const) Signed-off-by: Chris Dodd <cdodd@nvidia.com>
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Initial support for Verilog-style
[lsb+:width]slices, allowing variable index slices with a constant width.Most backends will probably require that these be strength-reduced to constant (normal) indexes, which will happen with eg. unrolled loops where the index depends on the loop index.