[cfe-commits] r55221 - in /cfe/trunk/lib/CodeGen: CGValue.h CodeGenFunction.h
Daniel Dunbar
daniel at zuster.org
Fri Aug 22 20:10:28 PDT 2008
Author: ddunbar
Date: Fri Aug 22 22:10:25 2008
New Revision: 55221
URL: http://llvm.org/viewvc/llvm-project?rev=55221&view=rev
Log:
Move [LR]Value into CGValue.h
- No (intended) functional change.
Added:
cfe/trunk/lib/CodeGen/CGValue.h
Modified:
cfe/trunk/lib/CodeGen/CodeGenFunction.h
Added: cfe/trunk/lib/CodeGen/CGValue.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGValue.h?rev=55221&view=auto
==============================================================================
--- cfe/trunk/lib/CodeGen/CGValue.h (added)
+++ cfe/trunk/lib/CodeGen/CGValue.h Fri Aug 22 22:10:25 2008
@@ -0,0 +1,208 @@
+//===-- CGValue.h - LLVM CodeGen wrappers for llvm::Value* ------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// These classes implement wrappers around llvm::Value in order to
+// fully represent the range of values for C L- and R- values.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLANG_CODEGEN_CGVALUE_H
+#define CLANG_CODEGEN_CGVALUE_H
+
+#include "clang/AST/Type.h"
+
+namespace clang {
+namespace CodeGen {
+
+/// RValue - This trivial value class is used to represent the result of an
+/// expression that is evaluated. It can be one of three things: either a
+/// simple LLVM SSA value, a pair of SSA values for complex numbers, or the
+/// address of an aggregate value in memory.
+class RValue {
+ llvm::Value *V1, *V2;
+ // TODO: Encode this into the low bit of pointer for more efficient
+ // return-by-value.
+ enum { Scalar, Complex, Aggregate } Flavor;
+
+ // FIXME: Aggregate rvalues need to retain information about whether they are
+ // volatile or not.
+public:
+
+ bool isScalar() const { return Flavor == Scalar; }
+ bool isComplex() const { return Flavor == Complex; }
+ bool isAggregate() const { return Flavor == Aggregate; }
+
+ /// getScalar() - Return the Value* of this scalar value.
+ llvm::Value *getScalarVal() const {
+ assert(isScalar() && "Not a scalar!");
+ return V1;
+ }
+
+ /// getComplexVal - Return the real/imag components of this complex value.
+ ///
+ std::pair<llvm::Value *, llvm::Value *> getComplexVal() const {
+ return std::pair<llvm::Value *, llvm::Value *>(V1, V2);
+ }
+
+ /// getAggregateAddr() - Return the Value* of the address of the aggregate.
+ llvm::Value *getAggregateAddr() const {
+ assert(isAggregate() && "Not an aggregate!");
+ return V1;
+ }
+
+ static RValue get(llvm::Value *V) {
+ RValue ER;
+ ER.V1 = V;
+ ER.Flavor = Scalar;
+ return ER;
+ }
+ static RValue getComplex(llvm::Value *V1, llvm::Value *V2) {
+ RValue ER;
+ ER.V1 = V1;
+ ER.V2 = V2;
+ ER.Flavor = Complex;
+ return ER;
+ }
+ static RValue getComplex(const std::pair<llvm::Value *, llvm::Value *> &C) {
+ RValue ER;
+ ER.V1 = C.first;
+ ER.V2 = C.second;
+ ER.Flavor = Complex;
+ return ER;
+ }
+ static RValue getAggregate(llvm::Value *V) {
+ RValue ER;
+ ER.V1 = V;
+ ER.Flavor = Aggregate;
+ return ER;
+ }
+};
+
+
+/// LValue - This represents an lvalue references. Because C/C++ allow
+/// bitfields, this is not a simple LLVM pointer, it may be a pointer plus a
+/// bitrange.
+class LValue {
+ // FIXME: alignment?
+
+ enum {
+ Simple, // This is a normal l-value, use getAddress().
+ VectorElt, // This is a vector element l-value (V[i]), use getVector*
+ BitField, // This is a bitfield l-value, use getBitfield*.
+ ExtVectorElt // This is an extended vector subset, use getExtVectorComp
+ } LVType;
+
+ llvm::Value *V;
+
+ union {
+ // Index into a vector subscript: V[i]
+ llvm::Value *VectorIdx;
+
+ // ExtVector element subset: V.xyx
+ llvm::Constant *VectorElts;
+
+ // BitField start bit and size
+ struct {
+ unsigned short StartBit;
+ unsigned short Size;
+ bool IsSigned;
+ } BitfieldData;
+ };
+
+ bool Volatile:1;
+ // FIXME: set but never used, what effect should it have?
+ bool Restrict:1;
+
+private:
+ static void SetQualifiers(unsigned Qualifiers, LValue& R) {
+ R.Volatile = (Qualifiers&QualType::Volatile)!=0;
+ R.Restrict = (Qualifiers&QualType::Restrict)!=0;
+ }
+
+public:
+ bool isSimple() const { return LVType == Simple; }
+ bool isVectorElt() const { return LVType == VectorElt; }
+ bool isBitfield() const { return LVType == BitField; }
+ bool isExtVectorElt() const { return LVType == ExtVectorElt; }
+
+ bool isVolatileQualified() const { return Volatile; }
+ bool isRestrictQualified() const { return Restrict; }
+
+ // simple lvalue
+ llvm::Value *getAddress() const { assert(isSimple()); return V; }
+ // vector elt lvalue
+ llvm::Value *getVectorAddr() const { assert(isVectorElt()); return V; }
+ llvm::Value *getVectorIdx() const { assert(isVectorElt()); return VectorIdx; }
+ // extended vector elements.
+ llvm::Value *getExtVectorAddr() const { assert(isExtVectorElt()); return V; }
+ llvm::Constant *getExtVectorElts() const {
+ assert(isExtVectorElt());
+ return VectorElts;
+ }
+ // bitfield lvalue
+ llvm::Value *getBitfieldAddr() const { assert(isBitfield()); return V; }
+ unsigned short getBitfieldStartBit() const {
+ assert(isBitfield());
+ return BitfieldData.StartBit;
+ }
+ unsigned short getBitfieldSize() const {
+ assert(isBitfield());
+ return BitfieldData.Size;
+ }
+ bool isBitfieldSigned() const {
+ assert(isBitfield());
+ return BitfieldData.IsSigned;
+ }
+
+ static LValue MakeAddr(llvm::Value *V, unsigned Qualifiers) {
+ LValue R;
+ R.LVType = Simple;
+ R.V = V;
+ SetQualifiers(Qualifiers,R);
+ return R;
+ }
+
+ static LValue MakeVectorElt(llvm::Value *Vec, llvm::Value *Idx,
+ unsigned Qualifiers) {
+ LValue R;
+ R.LVType = VectorElt;
+ R.V = Vec;
+ R.VectorIdx = Idx;
+ SetQualifiers(Qualifiers,R);
+ return R;
+ }
+
+ static LValue MakeExtVectorElt(llvm::Value *Vec, llvm::Constant *Elts,
+ unsigned Qualifiers) {
+ LValue R;
+ R.LVType = ExtVectorElt;
+ R.V = Vec;
+ R.VectorElts = Elts;
+ SetQualifiers(Qualifiers,R);
+ return R;
+ }
+
+ static LValue MakeBitfield(llvm::Value *V, unsigned short StartBit,
+ unsigned short Size, bool IsSigned,
+ unsigned Qualifiers) {
+ LValue R;
+ R.LVType = BitField;
+ R.V = V;
+ R.BitfieldData.StartBit = StartBit;
+ R.BitfieldData.Size = Size;
+ R.BitfieldData.IsSigned = IsSigned;
+ SetQualifiers(Qualifiers,R);
+ return R;
+ }
+};
+
+} // end namespace CodeGen
+} // end namespace clang
+
+#endif
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=55221&r1=55220&r2=55221&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Fri Aug 22 22:10:25 2008
@@ -29,6 +29,8 @@
class Module;
}
+#include "CGValue.h"
+
namespace clang {
class ASTContext;
class Decl;
@@ -45,188 +47,6 @@
class CodeGenTypes;
class CGRecordLayout;
-/// RValue - This trivial value class is used to represent the result of an
-/// expression that is evaluated. It can be one of three things: either a
-/// simple LLVM SSA value, a pair of SSA values for complex numbers, or the
-/// address of an aggregate value in memory.
-class RValue {
- llvm::Value *V1, *V2;
- // TODO: Encode this into the low bit of pointer for more efficient
- // return-by-value.
- enum { Scalar, Complex, Aggregate } Flavor;
-
- // FIXME: Aggregate rvalues need to retain information about whether they are
- // volatile or not.
-public:
-
- bool isScalar() const { return Flavor == Scalar; }
- bool isComplex() const { return Flavor == Complex; }
- bool isAggregate() const { return Flavor == Aggregate; }
-
- /// getScalar() - Return the Value* of this scalar value.
- llvm::Value *getScalarVal() const {
- assert(isScalar() && "Not a scalar!");
- return V1;
- }
-
- /// getComplexVal - Return the real/imag components of this complex value.
- ///
- std::pair<llvm::Value *, llvm::Value *> getComplexVal() const {
- return std::pair<llvm::Value *, llvm::Value *>(V1, V2);
- }
-
- /// getAggregateAddr() - Return the Value* of the address of the aggregate.
- llvm::Value *getAggregateAddr() const {
- assert(isAggregate() && "Not an aggregate!");
- return V1;
- }
-
- static RValue get(llvm::Value *V) {
- RValue ER;
- ER.V1 = V;
- ER.Flavor = Scalar;
- return ER;
- }
- static RValue getComplex(llvm::Value *V1, llvm::Value *V2) {
- RValue ER;
- ER.V1 = V1;
- ER.V2 = V2;
- ER.Flavor = Complex;
- return ER;
- }
- static RValue getComplex(const std::pair<llvm::Value *, llvm::Value *> &C) {
- RValue ER;
- ER.V1 = C.first;
- ER.V2 = C.second;
- ER.Flavor = Complex;
- return ER;
- }
- static RValue getAggregate(llvm::Value *V) {
- RValue ER;
- ER.V1 = V;
- ER.Flavor = Aggregate;
- return ER;
- }
-};
-
-
-/// LValue - This represents an lvalue references. Because C/C++ allow
-/// bitfields, this is not a simple LLVM pointer, it may be a pointer plus a
-/// bitrange.
-class LValue {
- // FIXME: alignment?
-
- enum {
- Simple, // This is a normal l-value, use getAddress().
- VectorElt, // This is a vector element l-value (V[i]), use getVector*
- BitField, // This is a bitfield l-value, use getBitfield*.
- ExtVectorElt // This is an extended vector subset, use getExtVectorComp
- } LVType;
-
- llvm::Value *V;
-
- union {
- // Index into a vector subscript: V[i]
- llvm::Value *VectorIdx;
-
- // ExtVector element subset: V.xyx
- llvm::Constant *VectorElts;
-
- // BitField start bit and size
- struct {
- unsigned short StartBit;
- unsigned short Size;
- bool IsSigned;
- } BitfieldData;
- };
-
- bool Volatile:1;
- // FIXME: set but never used, what effect should it have?
- bool Restrict:1;
-
-private:
- static void SetQualifiers(unsigned Qualifiers, LValue& R) {
- R.Volatile = (Qualifiers&QualType::Volatile)!=0;
- R.Restrict = (Qualifiers&QualType::Restrict)!=0;
- }
-
-public:
- bool isSimple() const { return LVType == Simple; }
- bool isVectorElt() const { return LVType == VectorElt; }
- bool isBitfield() const { return LVType == BitField; }
- bool isExtVectorElt() const { return LVType == ExtVectorElt; }
-
- bool isVolatileQualified() const { return Volatile; }
- bool isRestrictQualified() const { return Restrict; }
-
- // simple lvalue
- llvm::Value *getAddress() const { assert(isSimple()); return V; }
- // vector elt lvalue
- llvm::Value *getVectorAddr() const { assert(isVectorElt()); return V; }
- llvm::Value *getVectorIdx() const { assert(isVectorElt()); return VectorIdx; }
- // extended vector elements.
- llvm::Value *getExtVectorAddr() const { assert(isExtVectorElt()); return V; }
- llvm::Constant *getExtVectorElts() const {
- assert(isExtVectorElt());
- return VectorElts;
- }
- // bitfield lvalue
- llvm::Value *getBitfieldAddr() const { assert(isBitfield()); return V; }
- unsigned short getBitfieldStartBit() const {
- assert(isBitfield());
- return BitfieldData.StartBit;
- }
- unsigned short getBitfieldSize() const {
- assert(isBitfield());
- return BitfieldData.Size;
- }
- bool isBitfieldSigned() const {
- assert(isBitfield());
- return BitfieldData.IsSigned;
- }
-
- static LValue MakeAddr(llvm::Value *V, unsigned Qualifiers) {
- LValue R;
- R.LVType = Simple;
- R.V = V;
- SetQualifiers(Qualifiers,R);
- return R;
- }
-
- static LValue MakeVectorElt(llvm::Value *Vec, llvm::Value *Idx,
- unsigned Qualifiers) {
- LValue R;
- R.LVType = VectorElt;
- R.V = Vec;
- R.VectorIdx = Idx;
- SetQualifiers(Qualifiers,R);
- return R;
- }
-
- static LValue MakeExtVectorElt(llvm::Value *Vec, llvm::Constant *Elts,
- unsigned Qualifiers) {
- LValue R;
- R.LVType = ExtVectorElt;
- R.V = Vec;
- R.VectorElts = Elts;
- SetQualifiers(Qualifiers,R);
- return R;
- }
-
- static LValue MakeBitfield(llvm::Value *V, unsigned short StartBit,
- unsigned short Size, bool IsSigned,
- unsigned Qualifiers) {
- LValue R;
- R.LVType = BitField;
- R.V = V;
- R.BitfieldData.StartBit = StartBit;
- R.BitfieldData.Size = Size;
- R.BitfieldData.IsSigned = IsSigned;
- SetQualifiers(Qualifiers,R);
- return R;
- }
-};
-
/// CodeGenFunction - This class organizes the per-function state that is used
/// while generating LLVM code.
class CodeGenFunction {
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