support empty emitter (in contrast to no emitter if you don't specify anything)

[libfirm] / ir / be / scripts / generate_emitter.pl

diff --git a/ir/be/scripts/generate_emitter.pl b/ir/be/scripts/generate_emitter.pl
index a927edb..6fe175f 100755 (executable)
--- a/ir/be/scripts/generate_emitter.pl
+++ b/ir/be/scripts/generate_emitter.pl
@@ -14,6 +14,7 @@ my $target_dir = $ARGV[1];
 
 our $arch;
 our $comment_string;
+our $comment_string_end;
 our %nodes;
 
 # include spec file
@@ -42,14 +43,21 @@ foreach my $op (keys(%nodes)) {
        my %n = %{ $nodes{"$op"} };
 
        # skip this node description if no emit information is available
-       next if (!$n{"emit"} || length($n{"emit"}) < 1);
+       next if (!defined($n{"emit"}));
 
        $line = "static void emit_".$arch."_".$op."(const ir_node *n, $arch\_emit_env_t *env)";
+
+       push(@obst_register, "  BE_EMIT($op);\n");
+
+       if($n{"emit"} eq "") {
+               push(@obst_func, $line." {\n");
+               push(@obst_func, "}\n\n");
+               next;
+       }
+
        push(@obst_func, $line." {\n  FILE *F = env->out;\n");
        push(@obst_func, "  char cmd_buf[256], cmnt_buf[256];\n");
        push(@obst_func, "  const lc_arg_env_t *arg_env = $arch\_get_arg_env();\n\n");
-       push(@obst_register, "  BE_EMIT($op);\n");
-
        my @emit = split(/\n/, $n{"emit"});
 
        foreach my $template (@emit) {
@@ -64,7 +72,7 @@ foreach my $op (keys(%nodes)) {
                        my $cnt = 0;
                        my $buf = 'cmd_buf';
 
-                       push(@obst_func, "  cmnt_buf[0] = '\\0';\n");
+                       push(@obst_func, $indent."cmnt_buf[0] = '\\0';\n");
                        foreach $template (split(/$comment_string_quoted/, $fmt, 2)) {
                                my @params;
                                my $res = "";
@@ -119,13 +127,13 @@ foreach my $op (keys(%nodes)) {
 
                                push(@obst_func, $indent.'lc_esnprintf(arg_env, '.$buf.', 256, "'.$res.'"'.$parm.');'."\n");
                        }
+                       push(@obst_func, $indent.'lc_efprintf(arg_env, F, "\t%-35s %-60s '.$comment_string.' %+F (%+G) '.$comment_string_end.'\n", cmd_buf, cmnt_buf, n, n);'."\n");
                }
                else {
                        push(@obst_func, $template,"\n");
                }
        }
 
-       push(@obst_func, '  lc_efprintf(arg_env, F, "\t%-35s %-60s /* %+F (%+G) */\n", cmd_buf, cmnt_buf, n, n);'."\n");
        push(@obst_func, "}\n\n");
 }