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75 lines
2.4 KiB
Perl
Executable File
75 lines
2.4 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# Program: profile.pl
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#
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# Synopsis: Insert instrumentation code into a program, run it with the JIT,
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# then print out a profile report.
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#
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# Syntax: profile.pl [OPTIONS] bitcodefile <arguments>
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#
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# OPTIONS may include one or more of the following:
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# -block - Enable basicblock profiling
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# -edge - Enable edge profiling
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# -function - Enable function profiling
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# -o <filename> - Emit profiling information to the specified file, instead
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# of llvmprof.out
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#
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# Any unrecognized options are passed into the invocation of llvm-prof
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#
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my $ProfilePass = "-insert-edge-profiling";
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my $LLVMProfOpts = "";
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my $ProgramOpts = "";
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my $ProfileFile = "";
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# Parse arguments...
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while (scalar(@ARGV) and ($_ = $ARGV[0], /^[-+]/)) {
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shift;
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last if /^--$/; # Stop processing arguments on --
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# List command line options here...
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if (/^-?-block$/) { $ProfilePass = "-insert-block-profiling"; next; }
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if (/^-?-edge$/) { $ProfilePass = "-insert-edge-profiling"; next; }
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if (/^-?-function$/) { $ProfilePass = "-insert-function-profiling"; next; }
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if (/^-?-o$/) { # Read -o filename...
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die "-o option requires a filename argument!" if (!scalar(@ARGV));
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$ProgramOpts .= " -llvmprof-output $ARGV[0]";
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$ProfileFile = $ARGV[0];
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shift;
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next;
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}
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if (/^-?-help$/) {
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print "OVERVIEW: profile.pl - Instrumentation and profile printer.\n\n";
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print "USAGE: profile.pl [options] program.bc <program args>\n\n";
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print "OPTIONS:\n";
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print " -block - Enable basicblock profiling\n";
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print " -edge - Enable edge profiling\n";
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print " -function - Enable function profiling\n";
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print " -o <file> - Specify an output file other than llvm-prof.out.\n";
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print " -help - Print this usage information\n";
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print "\nAll other options are passed into llvm-prof.\n";
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exit 1;
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}
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# Otherwise, pass the option on to llvm-prof
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$LLVMProfOpts .= " " . $_;
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}
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die "Must specify LLVM bitcode file as first argument!" if (@ARGV == 0);
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my $BytecodeFile = $ARGV[0];
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shift @ARGV;
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my $libdir = `llvm-config --libdir`;
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chomp $libdir;
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my $LibProfPath = $libdir . "/profile_rt.so";
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system "opt -q -f $ProfilePass $BytecodeFile -o $BytecodeFile.inst";
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system "lli -fake-argv0 '$BytecodeFile' -load $LibProfPath " .
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"$BytecodeFile.inst $ProgramOpts " . (join ' ', @ARGV);
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system "rm $BytecodeFile.inst";
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system "llvm-prof $LLVMProfOpts $BytecodeFile $ProfileFile";
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