Moved over EmitFunctions to this library
llvm-svn: 2928
diff --git a/llvm/lib/Transforms/Instrumentation/EmitFunctions.cpp b/llvm/lib/Transforms/Instrumentation/EmitFunctions.cpp
new file mode 100644
index 0000000..2d9b9a7
--- /dev/null
+++ b/llvm/lib/Transforms/Instrumentation/EmitFunctions.cpp
@@ -0,0 +1,45 @@
+//===-- EmitFunctions.cpp - interface to insert instrumentation --*- C++ -*--=//
+//
+// This inserts a global constant table with function pointers all along
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Transforms/Instrumentation/EmitFunctions.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Constants.h"
+#include "llvm/Module.h"
+
+using std::vector;
+
+struct EmitFunctionTable : public Pass {
+ const char *getPassName() const { return "EmitFunctionTablePass"; }
+
+ bool run(Module &M);
+};
+
+// Create a new pass to add function table
+//
+Pass *createEmitFunctionTablePass() {
+ return new EmitFunctionTable();
+}
+
+// Per Module pass for inserting function table
+bool EmitFunctionTable::run(Module &M){
+ vector<const Type*> vType;
+ vector<Constant *> vConsts;
+ for(Module::iterator MI = M.begin(), ME = M.end(); MI!=ME; ++MI)
+ if (!MI->isExternal()) {
+ ConstantPointerRef *CP = ConstantPointerRef::get(MI);
+ vType.push_back(MI->getType());
+ vConsts.push_back(CP);
+ }
+
+ StructType *sttype = StructType::get(vType);
+ ConstantStruct *cstruct = ConstantStruct::get(sttype, vConsts);
+
+ GlobalVariable *gb = new GlobalVariable(cstruct->getType(), true, false,
+ cstruct, "llvmFunctionTable");
+ M.getGlobalList().push_back(gb);
+ return true; // Always modifies program
+}