Move [LR]Value into CGValue.h
- No (intended) functional change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55221 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index cf057d8..f13cba2 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -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 {