Fully compile the PULP common_cells

[fabianschuiki]

Tracking issue for getting the moore compiler to fully parse and compile the PULP common_cells repository.

Todos

Parsing

cargo run -- -I common_cells/include common_cells/src/*.sv --syntax

• Accept import between module name and parameter/port list (Accept import between module name and parameter/port list #137)
• Accept unsigned'(...) casts (Accept sign casts #138)
• Accept assert final ... items (Accept assert final items #139)
• Accept default disable ... items (Accept default disable items #140)
• Parser accepts entire common_cells

Compilation

scripts/test.py --debug -v test/svlog/common_cells.sv

• Implement const eval of casts
• Fix size casts like W'(42) which are mistaken for a type cast to W
• Lower function calls to HIR
• Lower functions declarations to HIR
• Typeck function calls
• Implement const string comparisons (Add string literals and evaluate constant operations #161)
• Implement const func calls (Implement constant function evaluation #143)
• Allow types in $bits (Builtin $bits function cannot be called on type #158)
• Implement += assignments (Implement assignment expressions #172)

Elaborate all modules:

• addr_decode
• cb_filter (Implement constant function evaluation #143)
• cdc_2phase
• cdc_fifo_2phase
• cdc_fifo_gray
• clk_div
• counter
• delta_counter
• ecc_decode (Implement constant function evaluation #143)
• ecc_encode (Implement constant function evaluation #143)
• edge_detect
• edge_propagator_rx
• edge_propagator
• edge_propagator_tx
• exp_backoff
• fall_through_register
• fifo_v3
• graycode
• id_queue (Assignment to bit select of struct as SBVT fails #195)
• lfsr_16bit
• lfsr_8bit
• lfsr (Honor type signs and unpacked dimensions #131)
• lzc (Fold constants upon code emission #160)
• max_counter
• mv_filter
• onehot_to_bin
• plru_tree (Implement assignment expressions #172)
• popcount
• rr_arb_tree
• rstgen_bypass
• rstgen
• serial_deglitch
• shift_reg
• spill_register
• sram
• stream_arbiter_flushable (Add string literals and evaluate constant operations #161)
• stream_arbiter (Add string literals and evaluate constant operations #161)
• stream_delay
• stream_demux
• stream_fifo
• stream_filter
• stream_fork_dynamic
• stream_fork
• stream_join
• stream_mux
• stream_register
• sub_per_hash (Implement constant function evaluation #143)
• sync
• sync_wedge
• unread