From f3f4fd50f2913faa9a7526b48f1cd5bd14ea5f8e Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 10 May 2002 15:36:46 +0000
Subject: [PATCH] Initial checkin of Statistic class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2598 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Support/Statistic.cpp                 | 31 +++++++++++++++++++++++
 support/lib/Support/Statistic.cpp         | 31 +++++++++++++++++++++++
 support/lib/Support/StatisticReporter.cpp | 31 +++++++++++++++++++++++
 3 files changed, 93 insertions(+)
 create mode 100644 lib/Support/Statistic.cpp
 create mode 100644 support/lib/Support/Statistic.cpp
 create mode 100644 support/lib/Support/StatisticReporter.cpp

diff --git a/lib/Support/Statistic.cpp b/lib/Support/Statistic.cpp
new file mode 100644
index 00000000000..79b19503b72
--- /dev/null
+++ b/lib/Support/Statistic.cpp
@@ -0,0 +1,31 @@
+//===-- 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>
+
+static cl::Flag Enabled("stats", "Enable statistics output from program");
+
+// 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";
+  }
+}
diff --git a/support/lib/Support/Statistic.cpp b/support/lib/Support/Statistic.cpp
new file mode 100644
index 00000000000..79b19503b72
--- /dev/null
+++ b/support/lib/Support/Statistic.cpp
@@ -0,0 +1,31 @@
+//===-- 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>
+
+static cl::Flag Enabled("stats", "Enable statistics output from program");
+
+// 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";
+  }
+}
diff --git a/support/lib/Support/StatisticReporter.cpp b/support/lib/Support/StatisticReporter.cpp
new file mode 100644
index 00000000000..79b19503b72
--- /dev/null
+++ b/support/lib/Support/StatisticReporter.cpp
@@ -0,0 +1,31 @@
+//===-- 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>
+
+static cl::Flag Enabled("stats", "Enable statistics output from program");
+
+// 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";
+  }
+}