X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fscripts%2Fgenerate_regalloc_if.pl;h=70f6e4fb48be35d8159fb140ef008d06ad12b6ae;hb=45ecc187cee7107c83c1f9618a1e1e586df73644;hp=ce9cb62a7f6f6ca7814ffb19f4c45c4dcf3e2bc2;hpb=ca81b1e7213c0d33b4a898dcda883609f848ef48;p=libfirm diff --git a/ir/be/scripts/generate_regalloc_if.pl b/ir/be/scripts/generate_regalloc_if.pl index ce9cb62a7..70f6e4fb4 100755 --- a/ir/be/scripts/generate_regalloc_if.pl +++ b/ir/be/scripts/generate_regalloc_if.pl @@ -1,36 +1,54 @@ #!/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(). +# +# Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. +# +# This file is part of libFirm. +# +# This file may be distributed and/or modified under the terms of the +# GNU General Public License version 2 as published by the Free Software +# Foundation and appearing in the file LICENSE.GPL included in the +# packaging of this file. +# +# Licensees holding valid libFirm Professional Edition licenses may use +# this file in accordance with the libFirm Commercial License. +# Agreement provided with the Software. +# +# This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +# WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR +# PURPOSE. +# + +# This script generates C code which creates ands sets up functions and +# data structures for the register allocator. # Creation: 2005/11/14 # $Id$ use strict; use Data::Dumper; +use integer; my $specfile = $ARGV[0]; my $target_dir = $ARGV[1]; our $arch; our %reg_classes; -our %nodes; +our %cpu; # include spec file my $return; -no strict "subs"; +use strict "subs"; unless ($return = do $specfile) { - warn "couldn't parse $specfile: $@" if $@; - warn "couldn't do $specfile: $!" unless defined $return; - warn "couldn't run $specfile" unless $return; + die "Fatal error: couldn't parse $specfile: $@" if $@; + die "Fatal error: couldn't do $specfile: $!" unless defined $return; + die "Fatal error: couldn't run $specfile" unless $return; } use strict "subs"; my $target_c = $target_dir."/gen_".$arch."_regalloc_if.c"; my $target_h = $target_dir."/gen_".$arch."_regalloc_if.h"; -my $target_h_t = $target_dir."/gen_".$arch."_regalloc_if_t.h"; # helper function sub translate_reg_type { @@ -62,6 +80,10 @@ sub translate_reg_type { push(@types, "arch_register_type_virtual"); } + if ($t & 32) { + push(@types, "arch_register_type_state"); + } + return join(" | ", @types); } } @@ -75,9 +97,7 @@ my @obst_regdef; # stack to define a name for a register index my @obst_reginit; # stack for the register type inits my @obst_req; # stack for the register requirements my @obst_limit_func; # stack for functions to return a subset of a register class -my @obst_defreq_head; # stack for prototypes of default requirement function my @obst_header_all; # stack for some extern struct defs needed for bearch_$arch include -my @obst_requirement_def; # stack for requirement name defines my $numregs; my $class_ptr; @@ -86,23 +106,7 @@ my $class_idx = 0; my $tmp; my %reg2class; - -# there is a default NONE requirement -$tmp = "/* Default NONE register requirements */\n"; -$tmp .= "const $arch\_register_req_t $arch\_default_req_none = {\n"; -$tmp .= " {\n"; -$tmp .= " arch_register_req_type_none, /* register type */\n"; -$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, /* 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_none;\n"); +my %regclass2len; push(@obst_classdef, "enum reg_classes {\n"); @@ -116,161 +120,91 @@ 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."]"; - $class_mode = pop(@class)->{"mode"}; - - push(@obst_regtypes_decl, "extern arch_register_t ".$class_name."_regs[$numregs];\n"); - push(@obst_regtypes_def, "arch_register_t ".$class_name."_regs[$numregs];\n"); - - push(@obst_classdef, " CLASS_$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"; - $tmp .= "const $arch\_register_req_t $arch\_default_req_$class_name = {\n"; - $tmp .= " {\n"; - $tmp .= " arch_register_req_type_normal,\n"; - $tmp .= " $class_ptr,\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, /* 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;\n"); + my $flags = pop(@class); + $class_mode = $flags->{"mode"}; + my $class_flags = $flags->{"flags"}; + my $flags_prepared = ""; + + if(defined($class_flags)) { + my $first = 1; + foreach my $flag (split(/\|/, $class_flags)) { + if(!$first) { + $flags_prepared .= "|"; + } else { + $first = 0; + } + $flags_prepared .= "arch_register_class_flag_$flag"; + } + } else { + $flags_prepared = "0"; + } + + push(@obst_regtypes_decl, "extern const arch_register_t ${class_name}_regs[$numregs];\n"); + + push(@obst_classdef, "\tCLASS_$class_name = $class_idx,\n"); + push(@obst_regclasses, "{ $class_idx, \"$class_name\", $numregs, NULL, ".$class_name."_regs, $flags_prepared }"); 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"); + push(@obst_reginit, "\t/* set largest possible mode for '$class_name' */\n"); + push(@obst_reginit, "\t$arch\_reg_classes[CLASS_".$class_name."].mode = $class_mode;\n\n"); + push(@obst_regtypes_def, "const arch_register_t ${class_name}_regs[$numregs] = {\n"); + + push(@obst_regdef, "enum reg_${class_name}_indices {\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 - # corresponding requirement structs. - # We need those functions to set register requirements on demand in transformation - # esp. for Call and RegParams where we can mix int and float parameters. - - my $limit_func_name = $arch."_limit_".$class_name."_".$_->{"name"}; - - # push the function prototype - $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 .= "}\n\n"; - push(@obst_limit_func, $tmp); - - # push the default requirement struct - $tmp = "const $arch\_register_req_t $arch\_default_req_$class_name\_".$_->{"name"}." = {\n"; - $tmp .= " {\n"; - $tmp .= " arch_register_req_type_limited,\n"; - $tmp .= " $class_ptr,\n"; - $tmp .= " $limit_func_name,\n"; - $tmp .= " NULL, /* limit environment */\n"; - $tmp .= " NULL, /* node for same */\n"; - $tmp .= " NULL /* node for different */\n"; - $tmp .= " },\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"); + my $ucname = uc($_->{"name"}); + my $type = translate_reg_type($_->{"type"}); + # realname is name if not set by user + $_->{"realname"} = $_->{"name"} if (! exists($_->{"realname"})); + my $realname = $_->{realname}; + my $execunitvarname = get_execunit_variable_name($_->{"unit"}); + $reg2class{$_->{"name"}} = { "class" => $old_classname, "index" => $idx }; # remember reg to class for later use - push(@obst_regdef, " REG_".uc($_->{"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[$idx].type = ".translate_reg_type($_->{"type"}).";\n"); - push(@obst_reginit, "\n"); + push(@obst_regdef, "\tREG_${ucname},\n"); + + push(@obst_regtypes_def, "\t{\n"); + push(@obst_regtypes_def, "\t\t\"$realname\",\n"); + push(@obst_regtypes_def, "\t\t$class_ptr,\n"); + push(@obst_regtypes_def, "\t\tREG_${ucname},\n"); + push(@obst_regtypes_def, "\t\t$type,\n"); + push(@obst_regtypes_def, "\t\t$execunitvarname\n"); + push(@obst_regtypes_def, "\t},\n"); + $idx++; } - push(@obst_regdef, " $numregs = $idx\n"); + push(@obst_regtypes_def, "};\n"); + + $regclass2len{$old_classname} = $idx; + push(@obst_regdef, "\t$numregs = $idx\n"); push(@obst_regdef, "};\n\n"); $class_idx++; } -push(@obst_classdef, " N_CLASSES = ".scalar(keys(%reg_classes))."\n"); +push(@obst_classdef, "\tN_CLASSES = ".scalar(keys(%reg_classes))."\n"); push(@obst_classdef, "};\n\n"); -# generate node-register constraints -foreach my $op (keys(%nodes)) { - my %n = %{ $nodes{"$op"} }; - - next if (!exists($n{"reg_req"})); - - $op = $arch."_".$op; - - push(@obst_req, "/* IN requirements for '$op' */\n"); - # check for argument requirements - if (exists($n{"reg_req"}{"in"})) { - generate_requirements(\%n, $op, "in"); - } - - push(@obst_req, "/* OUT requirements for '$op' */\n"); - # check for result requirements - if (exists($n{"reg_req"}{"out"})) { - generate_requirements(\%n, $op, "out"); - } -} - - - -# generate header _t (internal usage) file -open(OUT, ">$target_h_t") || die("Could not open $target_h_t, reason: $!\n"); - -my $creation_time = localtime(time()); - $tmp = uc($arch); -print OUT<$target_h") || die("Could not open $target_h, reason: $!\n"); +open(OUT, ">$target_h") || die("Fatal error: Could not open $target_h, reason: $!\n"); -$creation_time = localtime(time()); +my $creation_time = localtime(time()); print OUT<$target_c") || die("Could not open $target_c, reason: $!\n"); +# generate c file +open(OUT, ">$target_c") || die("Fatal error: Could not open $target_c, reason: $!\n"); $creation_time = localtime(time()); print OUT<{"reg_req"}{"$inout"})) { - my @reqs = @{ $n->{"reg_req"}{"$inout"} }; - - for (my $idx = 0; $idx <= $#reqs; $idx++) { - my $class = undef; - - if ($reqs[$idx] eq "none") { - $class = "none"; - } - elsif (is_reg_class($reqs[$idx])) { - $class = $reqs[$idx]; - } - else { - my @regs = split(/ /, $reqs[$idx]); -GET_CLASS: foreach my $reg (@regs) { - if ($reg =~ /!?(in|out)\_r\d+/ || $reg =~ /!in/) { - $class = "UNKNOWN_CLASS"; - } - else { - $class = get_reg_class($reg); - if (!defined $class) { - die("Could not get ".uc($inout)." register class for '$op' pos $idx (reg $reg) ... exiting.\n"); - } - else { - last GET_CLASS; - } # !defined class - } # if (reg =~ ... - } # foreach - } # if - - push(@idx_class, $class); - } # for - } # if - - return @idx_class; -} - -### -# Generates the requirements for the given description -### -sub generate_requirements { - my $n = shift; - my $op = shift; - my $inout = shift; - - # get classes for the complementary direction - my $outin = ($inout eq "in") ? "out" : "in"; - - my @reqs = @{ $n->{"reg_req"}{"$inout"} }; - - for (my $idx = 0; $idx <= $#reqs; $idx++) { - my $class = undef; - - my $tmp2 = "const $arch\_register_req_t _".$op."_reg_req_$inout\_$idx = "; - my $tmp = "#define ".$op."_reg_req_$inout\_$idx "; - - 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[$idx]."\n"; - } - else { - my @req_type_mask; - my ($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($same_pos)) { - push(@req_type_mask, "arch_register_req_type_should_be_same"); - } - if (defined($different_pos)) { - if ($different_pos == 666) { - push(@req_type_mask, "arch_register_req_type_should_be_different_from_all"); - undef $different_pos; +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; } - else { - 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, /* limit environment */\n"; - $tmp2 .= " NULL, /* same node */\n"; - $tmp2 .= " NULL /* different node */\n"; - $tmp2 .= " },\n"; - $tmp2 .= " ".(defined($same_pos) ? $same_pos : "0").",\n"; - $tmp2 .= " ".(defined($different_pos) ? $different_pos : "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"); - } - - push(@obst_requirement_def, $tmp); - } - -} - -### -# Determines whether $name is a specified register class or not. -# @return 1 if name is register class, 0 otherwise -### -sub is_reg_class { - my $name = shift; - return 1 if exists($reg_classes{"$name"}); - return 0; -} - -### -# Returns the register class for a given register. -# @return class or undef -### -sub get_reg_class { - my $reg = shift; - $reg = substr($reg, 1) if ($reg =~ /!.*/); - return $reg2class{"$reg"}{"class"} if (exists($reg2class{"$reg"})); - return undef; -} - -### -# Returns the index of a given register within it's register class. -# @return index or undef -### -sub get_reg_index { - my $reg = shift; - return $reg2class{"$reg"}{"index"} if (exists($reg2class{"$reg"})); - return undef; -} - -### -# Generates the function for a given $op and a given IN-index -# which returns a subset of possible register from a register class -# @return classname from which the subset is derived or undef and -# pos which corresponds to in/out reference position or undef -### -sub build_subset_class_func { - my $neg = undef; - my $class = undef; - my $has_limit = 0; - my $same_pos = undef; - my $different_pos = undef; - my $temp; - my @obst_init; - my @obst_limits; - my @obst_ignore; - - - # build function header - my $n = shift; - my $op = shift; - my $idx = shift; - my $in = shift; - - my $outin = $in ? "out" : "in"; - my @regs = split(/ /, shift); - - my @idx_class = build_inout_idx_class($n, $op, $outin); - - # set/unset registers -CHECK_REQS: foreach (@regs) { - if (/(!)?$outin\_r(\d+)/) { - 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); - } - - if ($1) { - $different_pos = $in ? -$2 : $2 - 1; } - else { - $same_pos = $in ? -$2 : $2 - 1; - } - - $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) && $neg == 0) { - # we have seen a positiv constraint as first one but this one is negative - # this doesn't make sense - print STDERR "Mixed positive and negative constraints for the same slot are not allowed.\n"; - return (undef, undef, undef, undef); - } - - if (!defined($neg)) { - $has_limit = 1; - push(@obst_init, " bs = bitset_set_all(bs); /* allow all register (negative constraints given) */\n"); - } - - $_ = substr($_, 1); # skip '!' - $neg = 1; - } - else { - if (defined($neg) && $neg == 1) { - # we have seen a negative constraint as first one but this one is positive - # this doesn't make sense - print STDERR "Mixed positive and negative constraints for the same slot are not allowed.\n"; - return (undef, undef, undef, undef); - } - - if (!defined($neg)) { - $has_limit = 1; - push(@obst_init, " bs = bitset_clear_all(bs); /* disallow all register (positive constraints given) */\n"); - } - $neg = 0; + if (! $found) { + print STDERR "Invalid execution unit $unit specified!\n"; } - - # check if register belongs to one of the given classes - $temp = get_reg_class($_); - if (!defined($temp)) { - print STDERR "Unknown register '$_'!\n"; - return (undef, undef, undef, undef); - } - - # set class - if (!defined($class)) { - $class = $temp; - } - elsif ($class ne $temp) { - # all registers must belong to the same class - print STDERR "Registerclass mismatch. '$_' is not member of class '$class'.\n"; - return (undef, undef, undef, undef); - } - - if ($neg == 1) { - $has_limit = 1; - push(@obst_limits, " bitset_clear(bs, ".get_reg_index($_)."); /* disallow $_ */\n"); - } - else { - $has_limit = 1; - push(@obst_limits, " bitset_set(bs, ".get_reg_index($_)."); /* 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[$idx]{"name"}." */\n"); - } - } - - if ($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 $op */\n"); - push(@obst_limit_func, "void limit_reg_".$op."_".($in ? "in" : "out")."_".$idx."(void *_unused, bitset_t *bs) {\n"); - 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); + return $name; }