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f3f4fd50f2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2598 91177308-0d34-0410-b5e6-96231b3b80d8
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
//===-- StatisticReporter.cpp - Easy way to expose stats information -------==//
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//
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// This file implements the 'Statistic' class, which is designed to be an easy
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// way to expose various success metrics from passes. These statistics are
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// printed at the end of a run, when the -stats command line option is enabled
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// on the command line.
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//
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// This is useful for reporting information like the number of instructions
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// simplified, optimized or removed by various transformations, like this:
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//
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// static Statistic<> NumInstEliminated("GCSE - Number of instructions killed");
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//
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// Later, in the code: ++NumInstEliminated;
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//
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//===----------------------------------------------------------------------===//
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#include "Support/StatisticReporter.h"
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#include "Support/CommandLine.h"
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#include <iostream>
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static cl::Flag Enabled("stats", "Enable statistics output from program");
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// Print information when destroyed, iff command line option is specified
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void StatisticBase::destroy() const {
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if (Enabled && hasSomeData()) {
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std::cerr.width(7);
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printValue(std::cerr);
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std::cerr.width(0);
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std::cerr << "\t" << Name << "\n";
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}
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}
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