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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-29 00:33:41 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-02-29 00:33:41 +0000 |
commit | 30e98a03a3c524026e2da2607e04bb655b0b6350 (patch) | |
tree | 918eb0da58d10019f3f26e1de5fb0eb955db2f8b /include | |
parent | d1d721660edf3f4e76ea69fd5579f857b97a3150 (diff) | |
download | external_llvm-30e98a03a3c524026e2da2607e04bb655b0b6350.zip external_llvm-30e98a03a3c524026e2da2607e04bb655b0b6350.tar.gz external_llvm-30e98a03a3c524026e2da2607e04bb655b0b6350.tar.bz2 |
Move the operand iterator into MachineInstrBundle.h where it belongs.
Extract a base class and provide four specific sub-classes for iterating
over const/non-const bundles/instructions.
This eliminates the mystery bool constructor argument.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151684 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
-rw-r--r-- | include/llvm/CodeGen/MachineBasicBlock.h | 67 | ||||
-rw-r--r-- | include/llvm/CodeGen/MachineInstrBundle.h | 108 |
2 files changed, 108 insertions, 67 deletions
diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h index 1138f92..576ce94 100644 --- a/include/llvm/CodeGen/MachineBasicBlock.h +++ b/include/llvm/CodeGen/MachineBasicBlock.h @@ -699,73 +699,6 @@ template <> struct GraphTraits<Inverse<const MachineBasicBlock*> > { } }; -//===----------------------------------------------------------------------===// -// MachineOperand iterator -// - -/// MachineOperands - Iterator that can visit all operands on a MachineInstr, -/// or all operands on a bundle of MachineInstrs. -/// -/// Intended use: -/// -/// for (MIOperands MIO(MI, true); MIO.isValid(); ++MIO) { -/// if (!MIO->isReg()) -/// continue; -/// ... -/// } -/// -class MIOperands { - MachineBasicBlock::instr_iterator InstrI, InstrE; - MachineInstr::mop_iterator OpI, OpE; - - // If the operands on InstrI are exhausted, advance InstrI to the next - // bundled instruction with operands. - void advance() { - while (OpI == OpE) { - // Don't advance off the basic block, or into a new bundle. - if (++InstrI == InstrE || !InstrI->isInsideBundle()) - break; - OpI = InstrI->operands_begin(); - OpE = InstrI->operands_end(); - } - } - -public: - /// MIOperands - Create an iterator that visits all operands on MI, or all - /// operands on every instruction in the bundle containing MI. - /// - /// @param MI The instruction to examine. - /// @param WholeBundle When true, visit all operands on the entire bundle. - /// - explicit MIOperands(MachineInstr *MI, bool WholeBundle = false) { - if (WholeBundle) { - InstrI = MI->getBundleStart(); - InstrE = MI->getParent()->instr_end(); - } else { - InstrI = InstrE = MI; - ++InstrE; - } - OpI = InstrI->operands_begin(); - OpE = InstrI->operands_end(); - if (WholeBundle) - advance(); - } - - /// isValid - Returns true until all the operands have been visited. - bool isValid() const { return OpI != OpE; } - - /// Preincrement. Move to the next operand. - MIOperands &operator++() { - assert(isValid() && "Cannot advance MIOperands beyond the last operand"); - ++OpI; - advance(); - return *this; - } - - MachineOperand &operator* () const { return *OpI; } - MachineOperand *operator->() const { return &*OpI; } -}; - } // End llvm namespace #endif diff --git a/include/llvm/CodeGen/MachineInstrBundle.h b/include/llvm/CodeGen/MachineInstrBundle.h index e6fcdad..f6525a8 100644 --- a/include/llvm/CodeGen/MachineInstrBundle.h +++ b/include/llvm/CodeGen/MachineInstrBundle.h @@ -41,6 +41,114 @@ MachineBasicBlock::instr_iterator finalizeBundle(MachineBasicBlock &MBB, /// MachineFunction. Return true if any bundles are finalized. bool finalizeBundles(MachineFunction &MF); +//===----------------------------------------------------------------------===// +// MachineOperand iterator +// + +/// MachineOperandIteratorBase - Iterator that can visit all operands on a +/// MachineInstr, or all operands on a bundle of MachineInstrs. This class is +/// not intended to be used directly, use one of the sub-classes instead. +/// +/// Intended use: +/// +/// for (MIBundleOperands MIO(MI); MIO.isValid(); ++MIO) { +/// if (!MIO->isReg()) +/// continue; +/// ... +/// } +/// +class MachineOperandIteratorBase { + MachineBasicBlock::instr_iterator InstrI, InstrE; + MachineInstr::mop_iterator OpI, OpE; + + // If the operands on InstrI are exhausted, advance InstrI to the next + // bundled instruction with operands. + void advance() { + while (OpI == OpE) { + // Don't advance off the basic block, or into a new bundle. + if (++InstrI == InstrE || !InstrI->isInsideBundle()) + break; + OpI = InstrI->operands_begin(); + OpE = InstrI->operands_end(); + } + } + +protected: + /// MachineOperandIteratorBase - Create an iterator that visits all operands + /// on MI, or all operands on every instruction in the bundle containing MI. + /// + /// @param MI The instruction to examine. + /// @param WholeBundle When true, visit all operands on the entire bundle. + /// + explicit MachineOperandIteratorBase(MachineInstr *MI, bool WholeBundle) { + if (WholeBundle) { + InstrI = MI->getBundleStart(); + InstrE = MI->getParent()->instr_end(); + } else { + InstrI = InstrE = MI; + ++InstrE; + } + OpI = InstrI->operands_begin(); + OpE = InstrI->operands_end(); + if (WholeBundle) + advance(); + } + + MachineOperand &deref() const { return *OpI; } + +public: + /// isValid - Returns true until all the operands have been visited. + bool isValid() const { return OpI != OpE; } + + /// Preincrement. Move to the next operand. + void operator++() { + assert(isValid() && "Cannot advance MIOperands beyond the last operand"); + ++OpI; + advance(); + } + +}; + +/// MIOperands - Iterate over operands of a single instruction. +/// +class MIOperands : public MachineOperandIteratorBase { +public: + MIOperands(MachineInstr *MI) : MachineOperandIteratorBase(MI, false) {} + MachineOperand &operator* () const { return deref(); } + MachineOperand *operator->() const { return &deref(); } +}; + +/// ConstMIOperands - Iterate over operands of a single const instruction. +/// +class ConstMIOperands : public MachineOperandIteratorBase { +public: + ConstMIOperands(const MachineInstr *MI) + : MachineOperandIteratorBase(const_cast<MachineInstr*>(MI), false) {} + const MachineOperand &operator* () const { return deref(); } + const MachineOperand *operator->() const { return &deref(); } +}; + +/// MIBundleOperands - Iterate over all operands in a bundle of machine +/// instructions. +/// +class MIBundleOperands : public MachineOperandIteratorBase { +public: + MIBundleOperands(MachineInstr *MI) : MachineOperandIteratorBase(MI, true) {} + MachineOperand &operator* () const { return deref(); } + MachineOperand *operator->() const { return &deref(); } +}; + +/// ConstMIBundleOperands - Iterate over all operands in a const bundle of +/// machine instructions. +/// +class ConstMIBundleOperands : public MachineOperandIteratorBase { +public: + ConstMIBundleOperands(const MachineInstr *MI) + : MachineOperandIteratorBase(const_cast<MachineInstr*>(MI), true) {} + const MachineOperand &operator* () const { return deref(); } + const MachineOperand *operator->() const { return &deref(); } +}; + } // End llvm namespace #endif |