An initial implementation of an LLVM ProfileInfo class which is designed to
eventually allow Passes to use profiling information to direct them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11294 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ProfileInfo.cpp b/lib/Analysis/ProfileInfo.cpp
new file mode 100644
index 0000000..8a0dbe6
--- /dev/null
+++ b/lib/Analysis/ProfileInfo.cpp
@@ -0,0 +1,42 @@
+//===- ProfileInfo.cpp - Profile Info Interface ---------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the abstract ProfileInfo interface, and the default
+// "no profile" implementation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Analysis/ProfileInfo.h"
+#include "llvm/Pass.h"
+using namespace llvm;
+
+// Register the AliasAnalysis interface, providing a nice name to refer to.
+namespace {
+ RegisterAnalysisGroup<ProfileInfo> Z("Profile Information");
+}
+
+ProfileInfo::~ProfileInfo() {}
+
+
+//===----------------------------------------------------------------------===//
+// NoProfile ProfileInfo implementation
+//
+
+namespace {
+ struct NoProfileInfo : public ImmutablePass, public ProfileInfo {
+ unsigned getExecutionCount(BasicBlock *BB) { return 0; }
+ };
+
+ // Register this pass...
+ RegisterOpt<NoProfileInfo>
+ X("no-profile", "No Profile Information");
+
+ // Declare that we implement the AliasAnalysis interface
+ RegisterAnalysisGroup<ProfileInfo, NoProfileInfo> Y;
+} // End of anonymous namespace