added support for joker register

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

diff --git a/ir/be/scripts/generate_regalloc_if.pl b/ir/be/scripts/generate_regalloc_if.pl
index ba1499a..0f310b3 100755 (executable)
--- a/ir/be/scripts/generate_regalloc_if.pl
+++ b/ir/be/scripts/generate_regalloc_if.pl
@@ -54,12 +54,17 @@ sub translate_reg_type {
                        push(@types, "arch_register_type_ignore");
                }
 
+               if ($t & 8) {
+                       push(@types, "arch_register_type_joker");
+               }
+
                return join(" | ", @types);
        }
 }
 
 # stacks for output
-my @obst_regtypes;     # stack for the register type variables
+my @obst_regtypes_def; # stack for the register type variables definitions
+my @obst_regtypes_decl;# stack for the register type variables declarations
 my @obst_regclasses;   # stack for the register class variables
 my @obst_classdef;     # stack to define a name for a class index
 my @obst_regdef;       # stack to define a name for a register index
@@ -95,7 +100,7 @@ $tmp .= "};\n\n";
 push(@obst_req, $tmp);
 push(@obst_header_all, "extern const $arch\_register_req_t $arch\_default_req_none;\n");
 
-push(@obst_classdef, "#define N_CLASSES ".scalar(keys(%reg_classes))."\n");
+push(@obst_classdef, "enum reg_classes {\n");
 
 my $class_mode;
 
@@ -109,10 +114,10 @@ foreach my $class_name (keys(%reg_classes)) {
        $class_ptr  = "&".$arch."_reg_classes[CLASS_".$class_name."]";
        $class_mode = pop(@class)->{"mode"};
 
-       push(@obst_regtypes, "#define $numregs ".($#class + 1)."\n");
-       push(@obst_regtypes, "arch_register_t ".$class_name."_regs[$numregs];\n\n");
+       push(@obst_regtypes_decl, "extern arch_register_t ".$class_name."_regs[$numregs];\n");
+       push(@obst_regtypes_def, "arch_register_t ".$class_name."_regs[$numregs];\n");
 
-       push(@obst_classdef, "#define CLASS_$class_name $class_idx\n");
+       push(@obst_classdef, "  CLASS_$class_name = $class_idx,\n");
        push(@obst_regclasses, "{ \"$class_name\", $numregs, NULL, ".$class_name."_regs }");
 
        # there is a default NORMAL requirement for each class
@@ -136,6 +141,7 @@ foreach my $class_name (keys(%reg_classes)) {
        push(@obst_reginit, "  /* Init of all registers in class '$class_name' */\n\n");
        push(@obst_reginit, "  /* set largest possible mode for '$class_name' */\n");
        push(@obst_reginit, "  $arch\_reg_classes[CLASS_".$class_name."].mode = $class_mode;\n\n");
+       push(@obst_regdef, "enum reg_".$class_name."_values {\n");
        foreach (@class) {
                # For each class we build for each of it's member registers a limit function
                # which limits the class to this particular register. We also build the
@@ -173,7 +179,7 @@ foreach my $class_name (keys(%reg_classes)) {
                push(@obst_header_all,"extern const $arch\_register_req_t $arch\_default_req_$class_name\_".$_->{"name"}.";\n");
 
                $reg2class{$_->{"name"}} = { "class" => $old_classname, "index" => $idx }; # remember reg to class for later use
-               push(@obst_regdef, "#define REG_".uc($_->{"name"})." $idx\n");
+               push(@obst_regdef, "  REG_".uc($_->{"name"})." = $idx,\n");
                push(@obst_reginit, "  ".$class_name."_regs[$idx].name      = \"".$_->{"name"}."\";\n");
                push(@obst_reginit, "  ".$class_name."_regs[$idx].reg_class = $class_ptr;\n");
                push(@obst_reginit, "  ".$class_name."_regs[$idx].index     = $idx;\n");
@@ -181,10 +187,15 @@ foreach my $class_name (keys(%reg_classes)) {
                push(@obst_reginit, "\n");
                $idx++;
        }
+       push(@obst_regdef, "  $numregs = $idx\n");
+       push(@obst_regdef, "};\n\n");
 
        $class_idx++;
 }
 
+push(@obst_classdef, "  N_CLASSES = ".scalar(keys(%reg_classes))."\n");
+push(@obst_classdef, "};\n\n");
+
 # generate node-register constraints
 foreach my $op (keys(%nodes)) {
        my %n = %{ $nodes{"$op"} };
@@ -263,7 +274,7 @@ print OUT @obst_regdef, "\n";
 
 print OUT @obst_classdef, "\n";
 
-print OUT @obst_regtypes, "\n";
+print OUT @obst_regtypes_decl, "\n";
 
 print OUT "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n";
 
@@ -305,6 +316,8 @@ EOF
 
 print OUT "arch_register_class_t $arch\_reg_classes[] = {\n  ".join(",\n  ", @obst_regclasses)."\n};\n\n";
 
+print OUT @obst_regtypes_def, "\n";
+
 print OUT "void ".$arch."_register_init(void *isa_ptr) {\n";
 print OUT @obst_reginit;
 print OUT "}\n\n";
@@ -496,7 +509,9 @@ sub build_subset_class_func {
        my $same_pos      = undef;
        my $different_pos = undef;
        my $temp;
-       my @temp_obst;
+       my @obst_init;
+       my @obst_limits;
+       my @obst_ignore;
 
 
        # build function header
@@ -540,7 +555,7 @@ CHECK_REQS: foreach (@regs) {
 
                        if (!defined($neg)) {
                                $has_limit = 1;
-                               push(@temp_obst, "  bs = bitset_set_all(bs);     /* allow all register (negative constraints given) */\n");
+                               push(@obst_init, "  bs = bitset_set_all(bs);     /* allow all register (negative constraints given) */\n");
                        }
 
                        $_   = substr($_, 1); # skip '!'
@@ -556,7 +571,7 @@ CHECK_REQS: foreach (@regs) {
 
                        if (!defined($neg)) {
                                $has_limit = 1;
-                               push(@temp_obst, "  bs = bitset_clear_all(bs);   /* disallow all register (positive constraints given) */\n");
+                               push(@obst_init, "  bs = bitset_clear_all(bs);   /* disallow all register (positive constraints given) */\n");
                        }
                        $neg = 0;
                }
@@ -580,11 +595,19 @@ CHECK_REQS: foreach (@regs) {
 
                if ($neg == 1) {
                        $has_limit = 1;
-                       push(@temp_obst, "  bitset_clear(bs, ".get_reg_index($_).");         /* disallow $_ */\n");
+                       push(@obst_limits, "  bitset_clear(bs, ".get_reg_index($_).");         /* disallow $_ */\n");
                }
                else {
                        $has_limit = 1;
-                       push(@temp_obst, "  bitset_set(bs, ".get_reg_index($_).");           /* allow $_ */\n");
+                       push(@obst_limits, "  bitset_set(bs, ".get_reg_index($_).");           /* allow $_ */\n");
+               }
+       }
+
+       my @cur_class = @{ $reg_classes{"$class"} };
+       for (my $idx = 0; $idx <= $#cur_class; $idx++) {
+               if (defined($cur_class[$idx]{"type"}) && ($cur_class[$idx]{"type"} & 4)) {
+                       push(@obst_ignore, "  bitset_clear(bs, ".get_reg_index($cur_class[$idx]{"name"}).");");
+                       push(@obst_ignore, "         /* disallow ignore reg ".$cur_class[$idx]{"name"}." */\n");
                }
        }
 
@@ -593,7 +616,9 @@ CHECK_REQS: foreach (@regs) {
 
                push(@obst_limit_func, "/* limit the possible registers for ".($in ? "IN" : "OUT")." $idx at op $op */\n");
                push(@obst_limit_func, "void limit_reg_".$op."_".($in ? "in" : "out")."_".$idx."(void *_unused, bitset_t *bs) {\n");
-               push(@obst_limit_func, @temp_obst);
+               push(@obst_limit_func, @obst_init);
+               push(@obst_limit_func, @obst_ignore);
+               push(@obst_limit_func, @obst_limits);
                push(@obst_limit_func, "}\n\n");
        }