Rename VMCore directory to IR.

Aside from moving the actual files, this patch only updates the build
system and the source file comments under lib/... that are relevant.

I'll be updating other docs and other files in smaller subsequnet
commits.

While I've tried to test this, but it is entirely possible that there
will still be some build system fallout.

Also, note that I've not changed the library name itself: libLLVMCore.a
is still the library name. I'd be interested in others' opinions about
whether we should rename this as well (I think we should, just not sure
what it might break)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171359 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/IR/ConstantFold.h b/lib/IR/ConstantFold.h
new file mode 100644
index 0000000000..e12f27a7cb
--- /dev/null
+++ b/lib/IR/ConstantFold.h
@@ -0,0 +1,56 @@
+//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the (internal) constant folding interfaces for LLVM.  These
+// interfaces are used by the ConstantExpr::get* methods to automatically fold
+// constants when possible.
+//
+// These operators may return a null object if they don't know how to perform
+// the specified operation on the specified constant types.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CONSTANTFOLDING_H
+#define CONSTANTFOLDING_H
+
+#include "llvm/ADT/ArrayRef.h"
+
+namespace llvm {
+  class Value;
+  class Constant;
+  class Type;
+
+  // Constant fold various types of instruction...
+  Constant *ConstantFoldCastInstruction(
+    unsigned opcode,     ///< The opcode of the cast
+    Constant *V,         ///< The source constant
+    Type *DestTy   ///< The destination type
+  );
+  Constant *ConstantFoldSelectInstruction(Constant *Cond,
+                                          Constant *V1, Constant *V2);
+  Constant *ConstantFoldExtractElementInstruction(Constant *Val, Constant *Idx);
+  Constant *ConstantFoldInsertElementInstruction(Constant *Val, Constant *Elt,
+                                                 Constant *Idx);
+  Constant *ConstantFoldShuffleVectorInstruction(Constant *V1, Constant *V2,
+                                                 Constant *Mask);
+  Constant *ConstantFoldExtractValueInstruction(Constant *Agg,
+                                                ArrayRef<unsigned> Idxs);
+  Constant *ConstantFoldInsertValueInstruction(Constant *Agg, Constant *Val,
+                                               ArrayRef<unsigned> Idxs);
+  Constant *ConstantFoldBinaryInstruction(unsigned Opcode, Constant *V1,
+                                          Constant *V2);
+  Constant *ConstantFoldCompareInstruction(unsigned short predicate, 
+                                           Constant *C1, Constant *C2);
+  Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
+                                      ArrayRef<Constant *> Idxs);
+  Constant *ConstantFoldGetElementPtr(Constant *C, bool inBounds,
+                                      ArrayRef<Value *> Idxs);
+} // End llvm namespace
+
+#endif