llvm/utils/update_mir_regclass_numbers

#!/bin/sh
set -e

# Update operands like "1966090 /* regdef:VGPR_32 */" in MIR tests when register
# class numbers change.

if [ $# -eq 0 ] ; then
    echo "usage: ${0##*/} /path/to/<Target>GenRegisterInfo.inc test/CodeGen/<Target>/testfile.mir..." >&2
    exit 1
fi

reginfo="$1"
shift

files=$(grep -El ' [0-9]+ /\* [a-z-]+:\w+ \*/' "$@")
[ "$files" ] || exit 0

grep -Eho ' [0-9]+ /\* [a-z-]+:\w+ \*/' $files | sed -E 's/.*:(\w+).*/\1/' | sort -u | while read -r class ; do
    id=$(grep -E "^  ${class}RegClassID = " "$reginfo" | sed -E 's/.* = ([0-9]+).*/\1/')
    if [ "$id" ] ; then
        echo "$class..."
        sed -Ei -e 's| [0-9]+ (/\* reguse:'"$class"' \*/)| '"$(((id + 1) << 16 | 9))"' \1|g' \
            -e 's| [0-9]+ (/\* regdef:'"$class"' \*/)| '"$(((id + 1) << 16 | 10))"' \1|g' \
            -e 's| [0-9]+ (/\* regdef-ec:'"$class"' \*/)| '"$(((id + 1) << 16 | 11))"' \1|g' \
            $files
    fi
done