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Add -d option to trust the disassembler.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7105 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2003-07-03 21:44:32 +00:00
parent 6bc3b7c701
commit 3fb290e41f
1 changed files with 18 additions and 1 deletions
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19
utils/codegen-diff
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@ -1,5 +1,7 @@
#!/usr/bin/perl
use Getopt::Std;
sub parse_objdump_file {
my ($filename) = @_;
my @result;
@ -55,12 +57,14 @@ sub binary_diffs {
my $d1 = $file1[$i];
my $d2 = $file2[$i];
if ($d1->{'bytes'} ne $d2->{'bytes'}) {
next if (($d1->{'instr'} eq $d2->{'instr'}) && $opt_d);
printf "0x%08x:\t%30s \t%s\n", 0+$d1->{'addr'}, $d1->{'bytes'}, $d1->{'instr'};
printf "0x%08x:\t%30s \t%s\n\n", 0+$d2->{'addr'}, $d2->{'bytes'}, $d2->{'instr'};
}
}
}
&getopts('d');
$objdump_file = $ARGV[0];
$gdb_file = $ARGV[1];
binary_diffs ($objdump_file, $gdb_file);
@ -74,7 +78,7 @@ codegen-diff
=head1 SYNOPSIS
codegen-diff I<OBJDUMP-OUTPUT-FILE> I<GDB-DISASSEMBLY-FILE>
codegen-diff [-d] I<OBJDUMP-OUTPUT-FILE> I<GDB-DISASSEMBLY-FILE>
=head1 DESCRIPTION
@ -97,6 +101,19 @@ Finally, you run B<codegen-diff>, as indicated in the Synopsis section of
this manpage. It will print out a two-line stanza for each mismatched
instruction, with the B<llc> version first, and the B<lli> version second.
=head1 OPTIONS
=over 4
=item -d
Don't show instructions where the bytes are different but they
disassemble to the same thing. This puts a lot of trust in the
disassembler, but it might help you highlight the more egregious cases
of misassembly.
=back
=head1 AUTHOR
B<codegen-diff> was written by Brian Gaeke.