| //===-- StatisticReporter.cpp - Easy way to expose stats information -------==// |
| // |
| // This file implements the 'Statistic' class, which is designed to be an easy |
| // way to expose various success metrics from passes. These statistics are |
| // printed at the end of a run, when the -stats command line option is enabled |
| // on the command line. |
| // |
| // This is useful for reporting information like the number of instructions |
| // simplified, optimized or removed by various transformations, like this: |
| // |
| // static Statistic<> NumInstEliminated("GCSE - Number of instructions killed"); |
| // |
| // Later, in the code: ++NumInstEliminated; |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Support/StatisticReporter.h" |
| #include "Support/CommandLine.h" |
| #include <iostream> |
| |
| bool DebugFlag; // DebugFlag - Exported boolean set by the -debug option |
| |
| // -stats - Command line option to cause transformations to emit stats about |
| // what they did. |
| // |
| static cl::opt<bool> |
| Enabled("stats", cl::desc("Enable statistics output from program")); |
| |
| // -debug - Command line option to enable the DEBUG statements in the passes. |
| static cl::opt<bool, true> |
| Debug("debug", cl::desc("Enable debug output"), cl::Hidden, |
| cl::location(DebugFlag)); |
| |
| // Print information when destroyed, iff command line option is specified |
| void StatisticBase::destroy() const { |
| if (Enabled && hasSomeData()) { |
| std::cerr.width(7); |
| printValue(std::cerr); |
| std::cerr.width(0); |
| std::cerr << "\t" << Name << "\n"; |
| } |
| } |