bump fork for version 0.43 #22
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Signed-off-by: Mike Inouye <[email protected]>
Fix memory leak in verific file parsing.
cxxrtl: don't emit invalid code on unconnected outputs.
Update stale top comment in `ast.h`
Document `!` and `:`. Add warning that semicolons need spaces.
This fix a few instances of incorrect (and non-portable) use of format specifiers.
Callers of the deprecated method had a path already.
Document script parsing
The input to a shift operation is padded. This reduced the final number of MUX cells but during techmap it can create huge temporary multiplexers in the log shifter. This significantly increases runtime and resources. A limit is added with a warning when it is used.
Verific build support improvements
Signed-off-by: gatecat <[email protected]>
Only the `B` input (the shift amount) can be marked as signed on a `$shiftx` cell. Adapt the helper accordingly and prevent it from creating invalid RTLIL when called with `is_signed` set. Previously it would mark both `A` and `B` as signed.
Make C++17 compiler required
rtlil: Fix `addShiftx` for signed shifts
peepopt: limit padding from shiftadd
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