hotspot/graal: simplify CTW logic. now, the following configurations are supported: (1) CTW with Graal, graal compiled by itself with bootstrap (--vm graal -XX:+BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld) (2) CTW with Graal, graal compiled by C1/itself aka. tiered with bootstrap (--vm graal -XX:+BootstrapGraal -XX:+TieredCompilation +XX:+CompileTheWorld) (3) CTW with Graal, graal compiled by itself without bootstrap (--vm graal -XX:-BootstrapGraal -XX:-TieredCompilation -XX:+CompileTheWorld) (4) CTW with Graal, graal compiled by C1/itself aka. tiered without bootstrap (--vm graal -XX:-BootstrapGraal -XX:+TieredCompilation -XX:+CompileTheWorld) (5) CTW with Graal, graal compiled by C1/C2 aka. hosted (--vm server -XX:+CompileTheWorld)

#! /bin/sh
#
# This file is used by adlc.make to selectively update generated
# adlc files. Because source and target diretories are relative
# paths, this file is copied to the target build directory before
# use.
#
# adlc-updater <file> <source-dir> <target-dir>
#
fix_lines() {
  # repair bare #line directives in $1 to refer to $2
  awk < $1 > $1+ '
    /^#line 999999$/ {print "#line " (NR+1) " \"" F2 "\""; next}
    {print}
  ' F2=$2
  mv $1+ $1
}
fix_lines $2/$1 $3/$1
[ -f $3/$1 ] && cmp -s $2/$1 $3/$1 || \
( [ -f $3/$1 ] && echo Updating $3/$1 ; touch $2/made-change ; mv $2/$1 $3/$1 )