X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fscripts%2Fgenerate_regalloc_if.pl;h=21f336b2465bc3672461594b670dc1fc8a230869;hb=8544304305897e5f2b5752fc243fd45c4f95a38c;hp=5a792fbdfd8a1a7b39ca511cc083953961604232;hpb=f0c2798aeff7c035b438536541254ee3065eefb8;p=libfirm

diff --git a/ir/be/scripts/generate_regalloc_if.pl b/ir/be/scripts/generate_regalloc_if.pl
index 5a792fbdf..21f336b24 100755
--- a/ir/be/scripts/generate_regalloc_if.pl
+++ b/ir/be/scripts/generate_regalloc_if.pl
@@ -33,14 +33,34 @@ my $target_h   = $target_dir."/gen_".$arch."_regalloc_if.h";
 my $target_h_t = $target_dir."/gen_".$arch."_regalloc_if_t.h";
 
 # helper function
-my @rt = ("arch_register_type_none",
-          "arch_register_type_write_invariant",
-          "arch_register_type_caller_saved",
-          "arch_register_type_callee_saved",
-          "arch_register_type_ignore");
+sub translate_reg_type {
+	my $t = shift;
+
+	if ($t == 0) {
+		return "arch_register_type_none";
+	}
+	else {
+		my @types;
+
+		if ($t & 1) {
+			push(@types, "arch_register_type_caller_save");
+		}
+
+		if ($t & 2) {
+			push(@types, "arch_register_type_callee_save");
+		}
+
+		if ($t & 4) {
+			push(@types, "arch_register_type_ignore");
+		}
+
+		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
@@ -49,6 +69,7 @@ my @obst_req;          # stack for the register requirements
 my @obst_limit_func;   # stack for functions to return a subset of a register class
 my @obst_defreq_head;  # stack for prototypes of default requirement function
 my @obst_header_all;   # stack for some extern struct defs needed for bearch_$arch include
+my @obst_requirement_def;  # stack for requirement name defines
 
 my $numregs;
 my $class_ptr;
@@ -62,19 +83,22 @@ my %reg2class;
 $tmp = "/* Default NONE register requirements */\n";
 $tmp .= "const $arch\_register_req_t $arch\_default_req_none = {\n";
 $tmp .= "  {\n";
-$tmp .= "    arch_register_req_type_none,\n";
-$tmp .= "    NULL,\n";
-$tmp .= "    NULL,\n";
-$tmp .= "    NULL\n";
+$tmp .= "    arch_register_req_type_none,  /* register type  */\n";
+$tmp .= "    NULL,                         /* register class */\n";
+$tmp .= "    NULL,                         /* limit function */\n";
+$tmp .= "    NULL,                         /* limit environment */\n";
+$tmp .= "    NULL,                         /* node for same */\n";
+$tmp .= "    NULL                          /* node for different */\n";
 $tmp .= "  },\n";
-$tmp .= "  0\n";
+$tmp .= "  0,                              /* same pos */\n";
+$tmp .= "  0                               /* different pos */\n";
 $tmp .= "};\n\n";
 push(@obst_req, $tmp);
-
-push(@obst_header_all, "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n");
 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;
 
 # generate register type and class variable, init function and default requirements
 foreach my $class_name (keys(%reg_classes)) {
@@ -84,12 +108,13 @@ foreach my $class_name (keys(%reg_classes)) {
 	$class_name = $arch."_".$class_name;
 	$numregs    = "N_".$class_name."_REGS";
 	$class_ptr  = "&".$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 $class_idx\n");
-	push(@obst_regclasses, "{ \"$class_name\", $numregs, ".$class_name."_regs }");
+	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
 	$tmp  = "/* Default NORMAL register requirements for class $class_name */\n";
@@ -97,17 +122,22 @@ foreach my $class_name (keys(%reg_classes)) {
 	$tmp .= "  {\n";
 	$tmp .= "    arch_register_req_type_normal,\n";
 	$tmp .= "    $class_ptr,\n";
-	$tmp .= "    NULL,\n";
-	$tmp .= "    NULL\n";
+	$tmp .= "    NULL,                    /* limit function */ \n";
+	$tmp .= "    NULL,                    /* limit environment */\n";
+	$tmp .= "    NULL,                    /* node for same */\n";
+	$tmp .= "    NULL                     /* node for different */\n";
 	$tmp .= "  },\n";
-	$tmp .= "  0\n";
+	$tmp .= "  0,                         /* same pos */\n";
+	$tmp .= "  0                          /* different pos */\n";
 	$tmp .= "};\n\n";
 	push(@obst_req, $tmp);
-
-	push(@obst_header_all, "\nextern const $arch\_register_req_t $arch\_default_req_$class_name;\n");
+	push(@obst_header_all, "extern const $arch\_register_req_t $arch\_default_req_$class_name;\n");
 
 	my $idx = 0;
 	push(@obst_reginit, "  /* Init of all registers in class '$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
@@ -118,14 +148,13 @@ foreach my $class_name (keys(%reg_classes)) {
 		my $limit_func_name = $arch."_limit_".$class_name."_".$_->{"name"};
 
 		# push the function prototype
-		$tmp = "int $limit_func_name(const ir_node *irn, int pos, bitset_t *bs)";
+		$tmp = "void $limit_func_name(void *_unused, bitset_t *bs)";
 		push(@obst_defreq_head, $tmp.";\n");
 
 		# push the function definition
 		$tmp .= " {\n";
 		$tmp .= "    bs = bitset_clear_all(bs);\n";
 		$tmp .= "    bitset_set(bs, REG_".uc($_->{"name"}).");\n";  # REGISTER to index assignment is done some lines down
-		$tmp .= "    return 1;\n";
 		$tmp .= "}\n\n";
 		push(@obst_limit_func, $tmp);
 
@@ -135,27 +164,33 @@ foreach my $class_name (keys(%reg_classes)) {
 		$tmp .= "    arch_register_req_type_limited,\n";
 		$tmp .= "    $class_ptr,\n";
 		$tmp .= "    $limit_func_name,\n";
-		$tmp .= "    NULL\n";
+		$tmp .= "    NULL,                     /* limit environment */\n";
+		$tmp .= "    NULL,                     /* node for same */\n";
+		$tmp .= "    NULL                      /* node for different */\n";
 		$tmp .= "  },\n";
-		$tmp .= "  0\n";
+		$tmp .= "  0,                          /* same pos */\n";
+		$tmp .= "  0                           /* different pos */\n";
 		$tmp .= "};\n\n";
 		push(@obst_req, $tmp);
-
-		push(@obst_header_all, "extern const $arch\_register_req_t $arch\_default_req_$class_name\_".$_->{"name"}.";\n");
+		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     = $idx;\n");
-		push(@obst_reginit, "  ".$class_name."_regs[$idx].type      = ".$rt[$_->{"type"}].";\n\n");
+		push(@obst_reginit, "  ".$class_name."_regs[$idx].type      = ".translate_reg_type($_->{"type"}).";\n");
+		push(@obst_reginit, "\n");
 		$idx++;
 	}
+	push(@obst_regdef, "  $numregs = $idx\n");
+	push(@obst_regdef, "};\n\n");
 
 	$class_idx++;
 }
 
-push(@obst_header_all, "\n/* node specific requirements */\n");
+push(@obst_classdef, "  N_CLASSES = ".scalar(keys(%reg_classes))."\n");
+push(@obst_classdef, "};\n\n");
 
 # generate node-register constraints
 foreach my $op (keys(%nodes)) {
@@ -200,20 +235,9 @@ print OUT<<EOF;
  * date:       $creation_time
  */
 
-#include "../bearch.h"
-#include "$arch\_nodes_attr.h"
-
 EOF
 
-print OUT @obst_regdef, "\n";
-
-print OUT @obst_classdef, "\n";
-
-print OUT @obst_regtypes, "\n";
-
-print OUT @obst_defreq_head, "\n";
-
-print OUT "void ".$arch."_register_init(void);\n\n";
+print OUT @obst_requirement_def;
 
 print OUT "\n#endif /* _GEN_$tmp\_REGALLOC_IF_T_H_ */\n";
 
@@ -237,11 +261,24 @@ print OUT<<EOF;
  * date:       $creation_time
  */
 
-#include "gen_$arch\_regalloc_if_t.h"
+#include "../bearch.h"
+#include "$arch\_nodes_attr.h"
 
 EOF
 
-print OUT @obst_header_all;
+print OUT @obst_regdef, "\n";
+
+print OUT @obst_classdef, "\n";
+
+print OUT @obst_regtypes_decl, "\n";
+
+print OUT "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n";
+
+print OUT "void ".$arch."_register_init(void *isa_ptr);\n\n";
+
+print OUT @obst_header_all, "\n";
+
+print OUT @obst_defreq_head, "\n";
 
 print OUT "\n#endif /* _GEN_$tmp\_REGALLOC_IF_H_ */\n";
 
@@ -266,17 +303,23 @@ print OUT<<EOF;
  * date:       $creation_time
  */
 
-#include "gen_$arch\_regalloc_if_t.h"
+#include "gen_$arch\_regalloc_if.h"
+#include "bearch_$arch\_t.h"   /* we need this to put the caller saved registers into the isa set */
+#include "$arch\_map_regs.h"
+#include "irmode.h"
 
 EOF
 
 print OUT "arch_register_class_t $arch\_reg_classes[] = {\n  ".join(",\n  ", @obst_regclasses)."\n};\n\n";
 
-print OUT "void ".$arch."_register_init(void) {\n";
+print OUT @obst_regtypes_def, "\n";
+
+print OUT "void ".$arch."_register_init(void *isa_ptr) {\n";
 print OUT @obst_reginit;
 print OUT "}\n\n";
 
 print OUT @obst_limit_func;
+
 print OUT @obst_req;
 
 close(OUT);
@@ -346,42 +389,74 @@ sub generate_requirements {
 		my $class = undef;
 
 		my $tmp2 = "const $arch\_register_req_t _".$op."_reg_req_$inout\_$idx = ";
-		my $tmp  = "const $arch\_register_req_t *".$op."_reg_req_$inout\_$idx = ";
-
-		push(@obst_header_all, "extern const $arch\_register_req_t *".$op."_reg_req_$inout\_$idx;\n");
+		my $tmp  = "#define ".$op."_reg_req_$inout\_$idx ";
 
 		if ($reqs[$idx] eq "none") {
-			$tmp .= "&$arch\_default_req_none;\n";
+			$tmp .= "&$arch\_default_req_none\n";
+		}
+		elsif ($reqs[$idx] =~ /^new_reg_(.*)$/) {
+			if (is_reg_class($1)) {
+				$tmp  .=  "&_".$op."_reg_req_$inout\_$idx\n";
+				$tmp2 .= "{\n";
+				$tmp2 .= "  {\n";
+				$tmp2 .= "    arch_register_req_type_should_be_different_from_all,\n";
+				$tmp2 .= "    &$arch\_reg_classes[CLASS_$arch\_".$1."],\n";
+				$tmp2 .= "    NULL,        /* limit function */\n";
+				$tmp2 .= "    NULL,        /* limit environment */\n";
+				$tmp2 .= "    NULL,        /* same node */\n";
+				$tmp2 .= "    NULL         /* different node */\n";
+				$tmp2 .= "  },\n";
+				$tmp2 .= "  0,\n";
+				$tmp2 .= "  0\n";
+				$tmp2 .= "};\n";
+
+				push(@obst_req, $tmp2."\n");
+				push(@obst_header_all, "extern const $arch\_register_req_t _".$op."_reg_req_$inout\_$idx;\n");
+			}
+			else {
+				print STDERR "Invalid register class '$1' given in OUT requirement $idx for '$op'.\n";
+			}
 		}
 		elsif (is_reg_class($reqs[$idx])) {
-			$tmp .= "&$arch\_default_req_".$arch."_".$reqs[$idx].";\n";
+			$tmp .= "&$arch\_default_req_".$arch."_".$reqs[$idx]."\n";
 		}
 		else {
 			my @req_type_mask;
-			my ($class, $has_limit, $pos, $same) = build_subset_class_func($n, $op, $idx, (($inout eq "in") ? 1 : 0), $reqs[$idx]);
+			my ($class, $has_limit, $same_pos, $different_pos) = build_subset_class_func($n, $op, $idx, (($inout eq "in") ? 1 : 0), $reqs[$idx]);
+
 			if (!defined($class)) {
 				die("Could not build subset for ".uc($inout)." requirements '$op' pos $idx ... exiting.\n");
 			}
+
 			if ($has_limit) {
 				push(@req_type_mask, "arch_register_req_type_limited");
 			}
-			if (defined($pos)) {
-				push(@req_type_mask, "arch_register_req_type_should_be_".($same ? "same" : "different"));
+			if (defined($same_pos)) {
+				push(@req_type_mask, "arch_register_req_type_should_be_same");
 			}
-			$tmp  .= "&_".$op."_reg_req_$inout\_$idx;\n";
-			$tmp2 .= " {\n";
+			if (defined($different_pos)) {
+				push(@req_type_mask, "arch_register_req_type_should_be_different");
+			}
+
+			$tmp  .= "&_".$op."_reg_req_$inout\_$idx\n";
+			$tmp2 .= "{\n";
 			$tmp2 .= "  {\n";
 			$tmp2 .= "    ".join(" | ", @req_type_mask).",\n";
 			$tmp2 .= "    &$arch\_reg_classes[CLASS_$arch\_".$class."],\n";
 			$tmp2 .= "    ".($has_limit ? "limit_reg_".$op."_$inout\_".$idx : "NULL").",\n";
-			$tmp2 .= "    NULL\n";
+			$tmp2 .= "    NULL,        /* limit environment */\n";
+			$tmp2 .= "    NULL,        /* same node */\n";
+			$tmp2 .= "    NULL         /* different node */\n";
 			$tmp2 .= "  },\n";
-			$tmp2 .= "  ".(defined($pos) ? $pos : "0")."\n};\n";
+			$tmp2 .= "  ".(defined($same_pos) ? $same_pos : "0").",\n";
+			$tmp2 .= "  ".(defined($different_pos) ? $different_pos : "0")."\n";
+			$tmp2 .= "};\n";
 
-			$tmp   = $tmp2.$tmp;
+			push(@obst_req, $tmp2."\n");
+			push(@obst_header_all, "extern const $arch\_register_req_t _".$op."_reg_req_$inout\_$idx;\n");
 		}
 
-		push(@obst_req, $tmp."\n");
+		push(@obst_requirement_def, $tmp);
 	}
 
 }
@@ -402,6 +477,7 @@ sub is_reg_class {
 ###
 sub get_reg_class {
 	my $reg = shift;
+	$reg = substr($reg, 1) if ($reg =~ /!.*/);
 	return $reg2class{"$reg"}{"class"} if (exists($reg2class{"$reg"}));
 	return undef;
 }
@@ -423,20 +499,20 @@ sub get_reg_index {
 #         pos which corresponds to in/out reference position or undef
 ###
 sub build_subset_class_func {
-	my $neg   = undef;
-	my $class = undef;
+	my $neg           = undef;
+	my $class         = undef;
+	my $has_limit     = 0;
+	my $same_pos      = undef;
+	my $different_pos = undef;
 	my $temp;
-	my $has_limit = 0;
+	my @temp_obst;
 
-	# build function header
-	my $n    = shift;
-	my $op   = shift;
-	my $idx  = shift;
-	my $in   = shift;
-	my $pos  = undef;
-	my $same = 1;
 
-	my @temp_obst;
+	# build function header
+	my $n   = shift;
+	my $op  = shift;
+	my $idx = shift;
+	my $in  = shift;
 
 	my $outin = $in ? "out" : "in";
 	my @regs  = split(/ /, shift);
@@ -446,13 +522,19 @@ sub build_subset_class_func {
 	# set/unset registers
 CHECK_REQS: foreach (@regs) {
 		if (/(!)?$outin\_r(\d+)/) {
-			if (defined($pos)) {
-				print STDERR "Multiple in/out references in one requirement not allowed.\n";
+			if (($1 && defined($different_pos)) || (!$1 && defined($same_pos))) {
+				print STDERR "Multiple in/out references of same type in one requirement not allowed.\n";
 				return (undef, undef, undef, undef);
 			}
-			$same  = 0 if ($1);
+
+			if ($1) {
+				$different_pos = $in ? -$2 : $2 - 1;
+			}
+			else {
+				$same_pos = $in ? -$2 : $2 - 1;
+			}
+
 			$class = $idx_class[$2 - 1];
-			$pos   = $in ? -$2 : $2 - 1;
 			next CHECK_REQS;
 		}
 
@@ -515,13 +597,22 @@ CHECK_REQS: foreach (@regs) {
 		}
 	}
 
+	my @cur_class = @{ $reg_classes{"$class"} };
+	for (my $idx = 0; $idx <= $#cur_class; $idx++) {
+		if (defined($cur_class[$idx]{"type"}) && ($cur_class[$idx]{"type"} & 4)) {
+			push(@temp_obst, "  bitset_clear(bs, ".get_reg_index($cur_class[$idx]{"name"}).");");
+			push(@temp_obst, "         /* disallow ignore reg ".$cur_class[$idx]{"name"}." */\n");
+		}
+	}
+
 	if ($has_limit == 1) {
+		push(@obst_header_all, "void limit_reg_".$op."_".($in ? "in" : "out")."_".$idx."(void *_unused, bitset_t *bs);\n");
+
 		push(@obst_limit_func, "/* limit the possible registers for ".($in ? "IN" : "OUT")." $idx at op $op */\n");
-		push(@obst_limit_func, "int limit_reg_".$op."_".($in ? "in" : "out")."_".$idx."(const ir_node *irn, int pos, bitset_t *bs) {\n");
+		push(@obst_limit_func, "void limit_reg_".$op."_".($in ? "in" : "out")."_".$idx."(void *_unused, bitset_t *bs) {\n");
 		push(@obst_limit_func, @temp_obst);
-		push(@obst_limit_func, "\n  return ".($neg ? scalar(@{ $reg_classes{"$class"} }) - scalar(@regs) : scalar(@regs)).";\n");
 		push(@obst_limit_func, "}\n\n");
 	}
 
-	return ($class, $has_limit, $pos, $same);
+	return ($class, $has_limit, $same_pos, $different_pos);
 }