Initial checkin of interpreter

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@361 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 91 insertions, 0 deletions

diff --git a/lib/ExecutionEngine/Interpreter/ExecutionAnnotations.h b/lib/ExecutionEngine/Interpreter/ExecutionAnnotations.h
new file mode 100644
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+++ b/lib/ExecutionEngine/Interpreter/ExecutionAnnotations.h
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+//===-- ExecutionAnnotations.h ---------------------------------*- C++ -*--===//
+//
+// This header file defines annotations used by the execution engine.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLI_EXECUTION_ANNOTATIONS_H
+#define LLI_EXECUTION_ANNOTATIONS_H
+
+//===----------------------------------------------------------------------===//
+// Support for MethodInfo annotations
+//===----------------------------------------------------------------------===//
+
+// This annotation (attached only to Method objects) is used to cache useful
+// information about the method, including the number of types present in the
+// method, and the number of values for each type.
+//
+// This annotation object is created on demand, and attaches other annotation
+// objects to the instructions in the method when it's created.
+//
+static AnnotationID MethodInfoAID(
+	            AnnotationManager::getID("Interpreter::MethodInfo"));
+
+struct MethodInfo : public Annotation {
+  MethodInfo(Method *M);
+  vector<unsigned> NumPlaneElements;
+
+private:
+  unsigned getValueSlot(const Value *V);
+};
+
+// CreateMethodInfo - Factory function to allow MethodInfo annotations to be
+// created on demand.
+//
+inline static Annotation *CreateMethodInfo(AnnotationID AID, Annotable *O) {
+  assert(AID == MethodInfoAID);
+  return new MethodInfo((Method*)O);  // Simply invoke the ctor
+}
+
+
+//===----------------------------------------------------------------------===//
+// Support for the SlotNumber annotation
+//===----------------------------------------------------------------------===//
+
+// This annotation (attached only to MethodArgument & Instruction objects) is
+// used to hold the the slot number for the value in its type plane.
+//
+// Entities have this annotation attached to them when the containing
+// method has it's MethodInfo created (by the MethodInfo ctor).
+//
+static AnnotationID SlotNumberAID(
+	            AnnotationManager::getID("Interpreter::SlotNumber"));
+
+struct SlotNumber : public Annotation {
+  unsigned SlotNum;   // Ranges from 0->
+
+  SlotNumber(unsigned sn) : Annotation(SlotNumberAID), 
+			    SlotNum(sn) {}
+};
+
+
+
+
+//===----------------------------------------------------------------------===//
+// Support for the InstNumber annotation
+//===----------------------------------------------------------------------===//
+
+// This annotation (attached only to Instruction objects) is used to hold the
+// instruction number of the instruction, and the slot number for the value in
+// its type plane.  InstNumber's are used for user interaction, and for
+// calculating which value slot to store the result of the instruction in.
+//
+// Instructions have this annotation attached to them when the containing method
+// has it's MethodInfo created (by the MethodInfo ctor).
+//
+struct InstNumber : public SlotNumber {
+  unsigned InstNum;   // Ranges from 1->
+
+  InstNumber(unsigned in, unsigned sn) : SlotNumber(sn), InstNum(in) {}
+};
+
+
+//===----------------------------------------------------------------------===//
+// Support for the Breakpoint annotation
+//===----------------------------------------------------------------------===//
+
+static AnnotationID BreakpointAID(
+	            AnnotationManager::getID("Interpreter::Breakpoint"));
+// Just use an Annotation directly, Breakpoint is currently just a marker
+
+#endif