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Simplify TargetRegisterClass a bit, also eliminating virtual function call

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-15 19:29:14 +00:00
parent 9593fb1503
commit 0f24e33b73
1 changed files with 18 additions and 14 deletions
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32
include/llvm/Target/MRegisterInfo.h
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@ -42,25 +42,29 @@ namespace MRF { // MRF = Machine Register Flags
};
class TargetRegisterClass {
protected:
TargetRegisterClass() {}
public:
typedef const unsigned* iterator;
typedef const unsigned* const_iterator;
typedef unsigned* iterator;
typedef unsigned* const_iterator;
private:
const unsigned RegSize; // Size of register in bytes
const iterator RegsBegin, RegsEnd;
public:
TargetRegisterClass(unsigned RS, iterator RB, iterator RE)
: RegSize(RS), RegsBegin(RB), RegsEnd(RE) {}
virtual ~TargetRegisterClass() {} // Allow subclasses
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
iterator begin() const { return RegsBegin; }
iterator end() const { return RegsEnd; }
virtual unsigned getNumRegs() const { return 0; }
virtual unsigned getRegister(unsigned idx) const { return 0; }
unsigned getNumRegs() const { return RegsEnd-RegsBegin; }
unsigned getRegister(unsigned i) const {
assert(i < getNumRegs() && "Register number out of range!");
return RegsBegin[i];
}
virtual unsigned getDataSize() const { return 0; }
unsigned getDataSize() const { return RegSize; }
//const std::vector<unsigned> &getRegsInClass(void) { return Regs; }
//void getAliases(void);
};
@ -146,7 +150,7 @@ public:
virtual unsigned getStackPointer() const = 0;
/// Register class iterators
typedef const TargetRegisterClass** const_iterator;
typedef const TargetRegisterClass * const * const_iterator;
virtual const_iterator regclass_begin() const = 0;
virtual const_iterator regclass_end() const = 0;