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m1/perf/eval.pl: warn if an instruction reads and writes from the same register

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Werner Almesberger 2011-09-25 10:48:22 -03:00
parent a0abd4e122
commit 5bf9ae002f
1 changed files with 5 additions and 0 deletions
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5
m1/perf/eval.pl
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@ -49,6 +49,11 @@ while (<>) {
$reg{$a} = 1 if $nregs && defined $a; $reg{$a} = 1 if $nregs && defined $a;
$reg{$b} = 1 if $nregs && defined $b; $reg{$b} = 1 if $nregs && defined $b;
print STDERR "$i: concurrent read/write on $a (A)\n"
if defined $d && $a eq $d;
print STDERR "$i: concurrent read/write on $b (B)\n"
if defined $d && $b eq $d;
$a = $reg{$a} if defined $reg{$a}; $a = $reg{$a} if defined $reg{$a};
$b = $reg{$b} if defined $reg{$b}; $b = $reg{$b} if defined $reg{$b};