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Give Op<N>() AppleScript-like semantics, i.e. for negative N it indexes relative to op_end.

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This is a preliminary to changes to come. No intended functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66593 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2009-03-10 23:02:13 +00:00
parent 68edf5f68a
commit 20cb46287c
2 changed files with 19 additions and 16 deletions
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22
include/llvm/OperandTraits.h
View File

@ -124,8 +124,8 @@ struct HungoffOperandTraits {
inline op_iterator op_end(); \
inline const_op_iterator op_end() const; \
protected: \
template <unsigned> inline Use &Op(); \
template <unsigned> inline const Use &Op() const; \
template <int> inline Use &Op(); \
template <int> inline const Use &Op() const; \
public: \
inline unsigned getNumOperands() const
@ -157,12 +157,11 @@ void CLASS::setOperand(unsigned i_nocapture, VALUECLASS *Val_nocapture) { \
unsigned CLASS::getNumOperands() const { \
return OperandTraits<CLASS>::operands(this); \
} \
template <unsigned Idx_nocapture> Use &CLASS::Op() { \
return OperandTraits<CLASS>::op_begin(this)[Idx_nocapture]; \
template <int Idx_nocapture> Use &CLASS::Op() { \
return this->OpFrom<Idx_nocapture>(this); \
} \
template <unsigned Idx_nocapture> const Use &CLASS::Op() const { \
return OperandTraits<CLASS>::op_begin( \
const_cast<CLASS*>(this))[Idx_nocapture]; \
template <int Idx_nocapture> const Use &CLASS::Op() const { \
return this->OpFrom<Idx_nocapture>(this); \
}
@ -195,12 +194,11 @@ void CLASS::setOperand(unsigned i_nocapture, VALUECLASS *Val_nocapture) { \
unsigned CLASS::getNumOperands() const { \
return OperandTraits<CLASS>::operands(this); \
} \
template <unsigned Idx_nocapture> Use &CLASS::Op() { \
return OperandTraits<CLASS>::op_begin(this)[Idx_nocapture]; \
template <int Idx_nocapture> Use &CLASS::Op() { \
return this->OpFrom<Idx_nocapture>(this); \
} \
template <unsigned Idx_nocapture> const Use &CLASS::Op() const { \
return OperandTraits<CLASS>::op_begin( \
const_cast<CLASS*>(this))[Idx_nocapture]; \
template <int Idx_nocapture> const Use &CLASS::Op() const { \
return this->OpFrom<Idx_nocapture>(this); \
}

13
include/llvm/User.h
View File

@ -83,11 +83,16 @@ public:
assert(0 && "Constructor throws?");
}
protected:
template <unsigned Idx> Use &Op() {
return OperandTraits<User>::op_begin(this)[Idx];
template <int Idx, typename U> static Use &OpFrom(const U *that) {
return Idx < 0
? OperandTraits<U>::op_end(const_cast<U*>(that))[Idx]
: OperandTraits<U>::op_begin(const_cast<U*>(that))[Idx];
}
template <unsigned Idx> const Use &Op() const {
return OperandTraits<User>::op_begin(const_cast<User*>(this))[Idx];
template <int Idx> Use &Op() {
return OpFrom<Idx>(this);
}
template <int Idx> const Use &Op() const {
return OpFrom<Idx>(this);
}
public:
Value *getOperand(unsigned i) const {