#!/usr/bin/perl -w
-# This script generates C code which emits assembler code for the
-# assembler ir nodes. It takes a "emit" key from the node specification
-# and substitutes lines starting with . with a corresponding fprintf().
+# This script generates C code which creates ands sets up functions and
+# data structures for the register allocator.
# Creation: 2005/11/14
# $Id$
our $arch;
our %reg_classes;
our %nodes;
+our %cpu;
# include spec file
push(@types, "arch_register_type_ignore");
}
+ if ($t & 8) {
+ push(@types, "arch_register_type_joker");
+ }
+
+ if ($t & 16) {
+ push(@types, "arch_register_type_virtual");
+ }
+
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
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;
$class_ptr = "&".$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
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
push(@obst_req, $tmp);
push(@obst_header_all,"extern const $arch\_register_req_t $arch\_default_req_$class_name\_".$_->{"name"}.";\n");
+ # realname is name if not set by user
+ $_->{"realname"} = $_->{"name"} if (! exists($_->{"realname"}));
+
$reg2class{$_->{"name"}} = { "class" => $old_classname, "index" => $idx }; # remember reg to class for later use
- push(@obst_regdef, "#define REG_".uc($_->{"name"})." $idx\n");
- push(@obst_reginit, " ".$class_name."_regs[$idx].name = \"".$_->{"name"}."\";\n");
+ push(@obst_regdef, " REG_".uc($_->{"name"})." = $idx,\n");
+ push(@obst_reginit, " ".$class_name."_regs[$idx].name = \"".$_->{"realname"}."\";\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[$idx].type = ".translate_reg_type($_->{"type"}).";\n");
+ push(@obst_reginit, " ".$class_name."_regs[$idx].data = ".get_execunit_variable_name($_->{"unit"}).";\n");
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"} };
print OUT @obst_classdef, "\n";
-print OUT @obst_regtypes, "\n";
+print OUT @obst_regtypes_decl, "\n";
print OUT "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n";
-# generate c inline file
+# generate c file
open(OUT, ">$target_c") || die("Could not open $target_c, reason: $!\n");
$creation_time = localtime(time());
* date: $creation_time
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include "gen_$arch\_regalloc_if.h"
-#include "bearch_$arch\_t.h" /* we need this to put the caller saved registers into the isa set */
+#include "gen_$arch\_machine.h" /* we need this, as there can be units assigned to registers */
+#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"
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";
else {
my @regs = split(/ /, $reqs[$idx]);
GET_CLASS: foreach my $reg (@regs) {
- if ($reg =~ /!?(in|out)\_r\d+/) {
+ if ($reg =~ /!?(in|out)\_r\d+/ || $reg =~ /!in/) {
$class = "UNKNOWN_CLASS";
}
else {
if ($reqs[$idx] eq "none") {
$tmp .= "&$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[$idx]."\n";
}
push(@req_type_mask, "arch_register_req_type_should_be_same");
}
if (defined($different_pos)) {
- push(@req_type_mask, "arch_register_req_type_should_be_different");
+ if ($different_pos == 666) {
+ push(@req_type_mask, "arch_register_req_type_should_be_different_from_all");
+ undef $different_pos;
+ }
+ else {
+ push(@req_type_mask, "arch_register_req_type_should_be_different");
+ }
}
$tmp .= "&_".$op."_reg_req_$inout\_$idx\n";
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
$class = $idx_class[$2 - 1];
next CHECK_REQS;
}
+ elsif (/!in/) {
+ $class = $idx_class[0];
+ return ($class, 0, undef, 666);
+ }
# check for negate
if (substr($_, 0, 1) eq "!") {
if (!defined($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 '!'
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");
}
$neg = 0;
}
if ($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[$idx]{"name"}." */\n");
}
}
push(@obst_limit_func, "/* limit the possible registers for ".($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");
}
return ($class, $has_limit, $same_pos, $different_pos);
}
+
+###
+# Gets the variable name for the execution unit assigned to this register.
+###
+sub get_execunit_variable_name {
+ my $unit = shift;
+ my $name = "NULL";
+ my $uc_arch = uc($arch);
+
+ if ($unit) {
+ my $found = 0;
+SRCH: foreach my $cur_type (keys(%cpu)) {
+ foreach my $cur_unit (@{ $cpu{"$cur_type"} }) {
+ if ($unit eq $cur_unit) {
+ my $tp_name = "$arch\_execution_units_$cur_type";
+ my $unit_name = "$uc_arch\_EXECUNIT_TP_$cur_type\_$unit";
+ $name = "&".$tp_name."[".$unit_name."]";
+ $found = 1;
+ last SRCH;
+ }
+ }
+ }
+
+ if (! $found) {
+ print STDERR "Invalid execution unit $unit specified!\n";
+ }
+ }
+
+ return $name;
+}
projects / libfirm / blobdiff