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35 lines
1.1 KiB
Tcl
35 lines
1.1 KiB
Tcl
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#!/usr/bin/tclsh
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#
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# Run this script, redirecting input from cachegrind output, to compute the
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# number of CPU cycles used by each VDBE opcode.
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#
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# The cachegrind output should be configured so that it reports a single
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# column of Ir at the left margin. Ex:
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#
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# cg_annotation --show=Ir --auto=yes cachegrind.out.* | tclsh opcodesum.tcl
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#
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set currentop x
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set ncycle(x) 0
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while {![eof stdin]} {
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set line [string map {\173 x \175 x \042 x} [gets stdin]]
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if {[regexp { \. case OP_.*:} $line]} {
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regexp {OP_(.+):} $line all currentop
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set ncycle($currentop) 0
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} elseif {[lindex $line 1]=="default:"
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&& [regexp {really OP_Noop and OP_Explain} $line]} {
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break
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} elseif {[lindex $line 0]!="."} {
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regsub -all {[^0-9]} [lindex $line 0] {} n
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if {$n!=""} {incr ncycle($currentop) $n}
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}
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}
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unset ncycle(x)
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set results {}
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foreach op [lsort [array names ncycle]] {
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if {$ncycle($op)==0} continue
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lappend results [list $ncycle($op) $op]
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}
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foreach entry [lsort -index 0 -int -decr $results] {
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puts [format {%-16s %10d} [lindex $entry 1] [lindex $entry 0]]
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}
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