cvw/wally-pipelined/lint-wally

# check for warnings in Verilog code
# The verilator lint tool is faster and better than Modelsim so it is best to run this first.

if [ -n "$1" ]; then
    echo "rv64ic linting..."
    if verilator --lint-only --top-module "$1" -Iconfig/rv64ic src/*/*.sv; then
        echo "rv32ic linting..."
        verilator --lint-only --top-module "$1" -Iconfig/rv32ic src/*/*.sv 
    else
        echo "Skipping rv32ic because rv64ic had errors or warnings"
        exit 1
    fi
else
    echo "rv64ic linting..."
    if verilator --lint-only --top-module wallypipelinedsoc -Iconfig/rv64ic src/*/*.sv; then
        echo "rv32ic linting..."
        verilator --lint-only --top-module wallypipelinedsoc -Iconfig/rv32ic src/*/*.sv 
    else
        echo "Skipping rv32ic because rv64ic had errors or warnings"
        exit 1
    fi
fi

# --lint-only just runs lint rather than trying to compile and simulate
# -I points to the include directory where files such as `include wally-config.vh  are found

# For more exhaustive (and sometimes spurious) warnings, run:
# verilator --lint-only -Wall -Iconfig/rv64ic src/*
# Unfortunately, this produces a bunch of UNUSED and UNDRIVEN signal warnings in blocks that are configured to not exist.