It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/GenLibDeps.pl b/utils/GenLibDeps.pl
new file mode 100755
index 0000000..419d8f9
--- /dev/null
+++ b/utils/GenLibDeps.pl
@@ -0,0 +1,209 @@
+#!/usr/bin/perl -w
+#
+# Program: GenLibDeps.pl
+#
+# Synopsis: Generate HTML output that shows the dependencies between a set of
+# libraries. The output of this script should periodically replace
+# the similar content in the UsingLibraries.html document.
+#
+# Syntax: GenLibDeps.pl [-flat] <directory_with_libraries_in_it> [path_to_nm_binary]
+#
+
+# Parse arguments...
+my $FLAT = 0;
+my $WHY = 0;
+while (scalar(@ARGV) and ($_ = $ARGV[0], /^[-+]/)) {
+ shift;
+ last if /^--$/; # Stop processing arguments on --
+
+ # List command line options here...
+ if (/^-flat$/) { $FLAT = 1; next; }
+ if (/^-why/) { $WHY = 1; $FLAT = 1; next; }
+ print "Unknown option: $_ : ignoring!\n";
+}
+
+# Give first option a name.
+my $Directory = $ARGV[0];
+if (!defined($Directory) || ! -d "$Directory") {
+ die "First argument must specify the directory containing LLVM libs\n";
+}
+
+my $nmPath = $ARGV[1];
+
+# Find the "dot" program
+my $DotPath="";
+if (!$FLAT) {
+ chomp($DotPath = `which dot`);
+ die "Can't find 'dot'" if (! -x "$DotPath");
+}
+
+if (!defined($nmPath) || $nmPath eq "") {
+ chomp($nmPath=`which nm`);
+ die "Can't find 'nm'" if (! -x "$nmPath");
+}
+
+# Open the directory and read its contents, sorting by name and differentiating
+# by whether its a library (.a) or an object file (.o)
+opendir DIR,$Directory;
+my @files = readdir DIR;
+closedir DIR;
+@libs = grep(/libLLVM.*\.a$/,sort(@files));
+@objs = grep(/LLVM.*\.o$/,sort(@files));
+
+# Declare the hashes we will use to keep track of the library and object file
+# symbol definitions.
+my %libdefs;
+my %objdefs;
+
+# Gather definitions from the libraries
+foreach $lib (@libs ) {
+ open DEFS,
+ "$nmPath -g $Directory/$lib | grep ' [ABCDGRST] ' | sed -e 's/^[0-9A-Fa-f]* [ABCDGRST] //' | sort | uniq |";
+ while (<DEFS>) {
+ chomp($_);
+ $libdefs{$_} = $lib;
+ }
+ close DEFS;
+}
+
+# Gather definitions from the object files.
+foreach $obj (@objs ) {
+ open DEFS,
+ "$nmPath -g $Directory/$obj | grep ' [ABCDGRST] ' | sed -e 's/^[0-9A-Fa-f]* [ABCDGRST] //' | sort | uniq |";
+ while (<DEFS>) {
+ chomp($_);
+ $objdefs{$_} = $obj;
+ }
+ close DEFS;
+}
+
+# Generate one entry in the <dl> list. This generates the <dt> and <dd> elements
+# for one library or object file. The <dt> provides the name of the library or
+# object. The <dd> provides a list of the libraries/objects it depends on.
+sub gen_one_entry {
+ my $lib = $_[0];
+ my $lib_ns = $lib;
+ $lib_ns =~ s/(.*)\.[oa]/$1/;
+ if ($FLAT) {
+ print "$lib:";
+ if ($WHY) { print "\n"; }
+ } else {
+ print " <dt><b>$lib</b</dt><dd><ul>\n";
+ }
+ open UNDEFS,
+ "$nmPath -g -u $Directory/$lib | sed -e 's/^ *U //' | sort | uniq |";
+ my %DepLibs;
+ while (<UNDEFS>) {
+ chomp;
+ my $lib_printed = 0;
+ if (defined($libdefs{$_}) && $libdefs{$_} ne $lib) {
+ $DepLibs{$libdefs{$_}} = [] unless exists $DepLibs{$libdefs{$_}};
+ push(@{$DepLibs{$libdefs{$_}}}, $_);
+ } elsif (defined($objdefs{$_}) && $objdefs{$_} ne $lib) {
+ $libroot = $lib;
+ $libroot =~ s/lib(.*).a/$1/;
+ if ($objdefs{$_} ne "$libroot.o") {
+ $DepLibs{$objdefs{$_}} = [] unless exists $DepLibs{$objdefs{$_}};
+ push(@{$DepLibs{$objdefs{$_}}}, $_);
+ }
+ }
+ }
+ close UNDEFS;
+ for my $key (sort keys %DepLibs) {
+ if ($FLAT) {
+ print " $key";
+ if ($WHY) {
+ print "\n";
+ my @syms = @{$DepLibs{$key}};
+ foreach $sym (@syms) {
+ print " $sym\n";
+ }
+ }
+ } else {
+ print " <li>$key</li>\n";
+ }
+ $suffix = substr($key,length($key)-1,1);
+ $key =~ s/(.*)\.[oa]/$1/;
+ if ($suffix eq "a") {
+ if (!$FLAT) { print DOT "$lib_ns -> $key [ weight=0 ];\n" };
+ } else {
+ if (!$FLAT) { print DOT "$lib_ns -> $key [ weight=10];\n" };
+ }
+ }
+ if ($FLAT) {
+ if (!$WHY) {
+ print "\n";
+ }
+ } else {
+ print " </ul></dd>\n";
+ }
+}
+
+# Make sure we flush on write. This is slower but correct based on the way we
+# write I/O in gen_one_entry.
+$| = 1;
+
+# Print the definition list tag
+if (!$FLAT) {
+ print "<dl>\n";
+
+ open DOT, "| $DotPath -Tgif > libdeps.gif";
+
+ print DOT "digraph LibDeps {\n";
+ print DOT " size=\"40,15\"; \n";
+ print DOT " ratio=\"1.33333\"; \n";
+ print DOT " margin=\"0.25\"; \n";
+ print DOT " rankdir=\"LR\"; \n";
+ print DOT " mclimit=\"50.0\"; \n";
+ print DOT " ordering=\"out\"; \n";
+ print DOT " center=\"1\";\n";
+ print DOT "node [shape=\"box\",\n";
+ print DOT " color=\"#000088\",\n";
+ print DOT " fillcolor=\"#FFFACD\",\n";
+ print DOT " fontcolor=\"#3355BB\",\n";
+ print DOT " style=\"filled\",\n";
+ print DOT " fontname=\"sans\",\n";
+ print DOT " fontsize=\"24\"\n";
+ print DOT "];\n";
+ print DOT "edge [dir=\"forward\",style=\"solid\",color=\"#000088\"];\n";
+}
+
+# Print libraries first
+foreach $lib (@libs) {
+ gen_one_entry($lib);
+}
+
+if (!$FLAT) {
+ print DOT "}\n";
+ close DOT;
+ open DOT, "| $DotPath -Tgif > objdeps.gif";
+ print DOT "digraph ObjDeps {\n";
+ print DOT " size=\"8,10\";\n";
+ print DOT " margin=\"0.25\";\n";
+ print DOT " rankdir=\"LR\";\n";
+ print DOT " mclimit=\"50.0\";\n";
+ print DOT " ordering=\"out\";\n";
+ print DOT " center=\"1\";\n";
+ print DOT "node [shape=\"box\",\n";
+ print DOT " color=\"#000088\",\n";
+ print DOT " fillcolor=\"#FFFACD\",\n";
+ print DOT " fontcolor=\"#3355BB\",\n";
+ print DOT " fontname=\"sans\",\n";
+ print DOT " style=\"filled\",\n";
+ print DOT " fontsize=\"24\"\n";
+ print DOT "];\n";
+ print DOT "edge [dir=\"forward\",style=\"solid\",color=\"#000088\"];\n";
+}
+
+# Print objects second
+foreach $obj (@objs) {
+ gen_one_entry($obj);
+}
+
+if (!$FLAT) {
+ print DOT "}\n";
+ close DOT;
+
+# Print end tag of definition list element
+ print "</dl>\n";
+}