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-rw-r--r--lib/VMCore/ConstantFold.cpp52
-rw-r--r--lib/VMCore/ConstantFold.h78
-rw-r--r--lib/VMCore/ConstantFolding.h78
-rw-r--r--lib/VMCore/Constants.cpp2
4 files changed, 82 insertions, 128 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp
index ddec284..ee74280 100644
--- a/lib/VMCore/ConstantFold.cpp
+++ b/lib/VMCore/ConstantFold.cpp
@@ -1,4 +1,4 @@
-//===- ConstantHandling.cpp - Implement ConstantHandling.h ----------------===//
+//===- ConstantFolding.cpp - LLVM constant folder -------------------------===//
//
// The LLVM Compiler Infrastructure
//
@@ -7,11 +7,13 @@
//
//===----------------------------------------------------------------------===//
//
-// This file implements the various intrinsic operations, on constant values.
+// This file implements folding of constants for LLVM. This implements the
+// (internal) ConstantFolding.h interface, which is used by the
+// ConstantExpr::get* methods to automatically fold constants when possible.
//
//===----------------------------------------------------------------------===//
-#include "ConstantHandling.h"
+#include "ConstantFolding.h"
#include "llvm/Constants.h"
#include "llvm/iPHINode.h"
#include "llvm/InstrTypes.h"
@@ -25,6 +27,50 @@ static unsigned getSize(const Type *Ty) {
return S ? S : 8; // Treat pointers at 8 bytes
}
+namespace {
+ struct ConstRules {
+ ConstRules() {}
+
+ // Binary Operators...
+ virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
+ virtual Constant *lessthan(const Constant *V1, const Constant *V2) const =0;
+ virtual Constant *equalto(const Constant *V1, const Constant *V2) const = 0;
+
+ // Casting operators.
+ virtual Constant *castToBool (const Constant *V) const = 0;
+ virtual Constant *castToSByte (const Constant *V) const = 0;
+ virtual Constant *castToUByte (const Constant *V) const = 0;
+ virtual Constant *castToShort (const Constant *V) const = 0;
+ virtual Constant *castToUShort(const Constant *V) const = 0;
+ virtual Constant *castToInt (const Constant *V) const = 0;
+ virtual Constant *castToUInt (const Constant *V) const = 0;
+ virtual Constant *castToLong (const Constant *V) const = 0;
+ virtual Constant *castToULong (const Constant *V) const = 0;
+ virtual Constant *castToFloat (const Constant *V) const = 0;
+ virtual Constant *castToDouble(const Constant *V) const = 0;
+ virtual Constant *castToPointer(const Constant *V,
+ const PointerType *Ty) const = 0;
+
+ // ConstRules::get - Return an instance of ConstRules for the specified
+ // constant operands.
+ //
+ static ConstRules &get(const Constant *V1, const Constant *V2);
+ private:
+ ConstRules(const ConstRules &); // Do not implement
+ ConstRules &operator=(const ConstRules &); // Do not implement
+ };
+}
+
+
Constant *llvm::ConstantFoldCastInstruction(const Constant *V,
const Type *DestTy) {
if (V->getType() == DestTy) return (Constant*)V;
diff --git a/lib/VMCore/ConstantFold.h b/lib/VMCore/ConstantFold.h
index dc5d0cf..7aa1683 100644
--- a/lib/VMCore/ConstantFold.h
+++ b/lib/VMCore/ConstantFold.h
@@ -1,4 +1,4 @@
-//===-- ConstantHandling.h - Stuff for manipulating constants ---*- C++ -*-===//
+//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
@@ -7,76 +7,30 @@
//
//===----------------------------------------------------------------------===//
//
-// WARNING: These operators may return a null object if I don't know how to
-// perform the specified operation on the specified constant types.
+// 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 I don't know how to perform the
+// specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
-#ifndef CONSTANTHANDLING_H
-#define CONSTANTHANDLING_H
+#ifndef CONSTANTFOLDING_H
+#define CONSTANTFOLDING_H
#include <vector>
namespace llvm {
class Constant;
class Type;
- class PointerType;
-
-struct ConstRules {
- ConstRules() {}
-
- // Binary Operators...
- virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
-
- virtual Constant *lessthan(const Constant *V1, const Constant *V2) const = 0;
-
- virtual Constant *equalto(const Constant *V1, const Constant *V2) const = 0;
-
- // Casting operators. ick
- virtual Constant *castToBool (const Constant *V) const = 0;
- virtual Constant *castToSByte (const Constant *V) const = 0;
- virtual Constant *castToUByte (const Constant *V) const = 0;
- virtual Constant *castToShort (const Constant *V) const = 0;
- virtual Constant *castToUShort(const Constant *V) const = 0;
- virtual Constant *castToInt (const Constant *V) const = 0;
- virtual Constant *castToUInt (const Constant *V) const = 0;
- virtual Constant *castToLong (const Constant *V) const = 0;
- virtual Constant *castToULong (const Constant *V) const = 0;
- virtual Constant *castToFloat (const Constant *V) const = 0;
- virtual Constant *castToDouble(const Constant *V) const = 0;
- virtual Constant *castToPointer(const Constant *V,
- const PointerType *Ty) const = 0;
-
- // ConstRules::get - Return an instance of ConstRules for the specified
- // constant operands.
- //
- static ConstRules &get(const Constant *V1, const Constant *V2);
-private:
- ConstRules(const ConstRules &); // Do not implement
- ConstRules &operator=(const ConstRules &); // Do not implement
-};
-
-
-//===----------------------------------------------------------------------===//
-// Implement higher level instruction folding type instructions
-//===----------------------------------------------------------------------===//
-
-// Constant fold various types of instruction...
-Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
-Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
- const Constant *V2);
-Constant *ConstantFoldGetElementPtr(const Constant *C,
- const std::vector<Constant*> &IdxList);
-
+
+ // Constant fold various types of instruction...
+ Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
+ Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
+ const Constant *V2);
+ Constant *ConstantFoldGetElementPtr(const Constant *C,
+ const std::vector<Constant*> &IdxList);
} // End llvm namespace
#endif
diff --git a/lib/VMCore/ConstantFolding.h b/lib/VMCore/ConstantFolding.h
index dc5d0cf..7aa1683 100644
--- a/lib/VMCore/ConstantFolding.h
+++ b/lib/VMCore/ConstantFolding.h
@@ -1,4 +1,4 @@
-//===-- ConstantHandling.h - Stuff for manipulating constants ---*- C++ -*-===//
+//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
@@ -7,76 +7,30 @@
//
//===----------------------------------------------------------------------===//
//
-// WARNING: These operators may return a null object if I don't know how to
-// perform the specified operation on the specified constant types.
+// 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 I don't know how to perform the
+// specified operation on the specified constant types.
//
//===----------------------------------------------------------------------===//
-#ifndef CONSTANTHANDLING_H
-#define CONSTANTHANDLING_H
+#ifndef CONSTANTFOLDING_H
+#define CONSTANTFOLDING_H
#include <vector>
namespace llvm {
class Constant;
class Type;
- class PointerType;
-
-struct ConstRules {
- ConstRules() {}
-
- // Binary Operators...
- virtual Constant *add(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *sub(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *mul(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *div(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *rem(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_and(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_or (const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *op_xor(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shl(const Constant *V1, const Constant *V2) const = 0;
- virtual Constant *shr(const Constant *V1, const Constant *V2) const = 0;
-
- virtual Constant *lessthan(const Constant *V1, const Constant *V2) const = 0;
-
- virtual Constant *equalto(const Constant *V1, const Constant *V2) const = 0;
-
- // Casting operators. ick
- virtual Constant *castToBool (const Constant *V) const = 0;
- virtual Constant *castToSByte (const Constant *V) const = 0;
- virtual Constant *castToUByte (const Constant *V) const = 0;
- virtual Constant *castToShort (const Constant *V) const = 0;
- virtual Constant *castToUShort(const Constant *V) const = 0;
- virtual Constant *castToInt (const Constant *V) const = 0;
- virtual Constant *castToUInt (const Constant *V) const = 0;
- virtual Constant *castToLong (const Constant *V) const = 0;
- virtual Constant *castToULong (const Constant *V) const = 0;
- virtual Constant *castToFloat (const Constant *V) const = 0;
- virtual Constant *castToDouble(const Constant *V) const = 0;
- virtual Constant *castToPointer(const Constant *V,
- const PointerType *Ty) const = 0;
-
- // ConstRules::get - Return an instance of ConstRules for the specified
- // constant operands.
- //
- static ConstRules &get(const Constant *V1, const Constant *V2);
-private:
- ConstRules(const ConstRules &); // Do not implement
- ConstRules &operator=(const ConstRules &); // Do not implement
-};
-
-
-//===----------------------------------------------------------------------===//
-// Implement higher level instruction folding type instructions
-//===----------------------------------------------------------------------===//
-
-// Constant fold various types of instruction...
-Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
-Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
- const Constant *V2);
-Constant *ConstantFoldGetElementPtr(const Constant *C,
- const std::vector<Constant*> &IdxList);
-
+
+ // Constant fold various types of instruction...
+ Constant *ConstantFoldCastInstruction(const Constant *V, const Type *DestTy);
+ Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
+ const Constant *V2);
+ Constant *ConstantFoldGetElementPtr(const Constant *C,
+ const std::vector<Constant*> &IdxList);
} // End llvm namespace
#endif
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index 35681c0..0a1c213 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -12,7 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Constants.h"
-#include "ConstantHandling.h"
+#include "ConstantFolding.h"
#include "llvm/DerivedTypes.h"
#include "llvm/iMemory.h"
#include "llvm/SymbolTable.h"
generated by cgit v1.1 at 2025-08-16 07:28:11 +0000