From 466b534a570f574ed485d875bbca8454f68dcb52 Mon Sep 17 00:00:00 2001
From: Tanya Lattner <tonic@nondot.org>
Date: Sun, 23 May 2004 19:35:12 +0000
Subject: [PATCH] Adding support to clone MachineInstr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13661 91177308-0d34-0410-b5e6-96231b3b80d8
---
include/llvm/CodeGen/MachineInstr.h | 14 +++++++++++++-
lib/CodeGen/MachineInstr.cpp | 19 +++++++++++++++++++
2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index dac1c47c961..b6c18610ad3 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -172,6 +172,7 @@ public:
contents.SymbolName = new std::string(M.getSymbolName());
}
+
~MachineOperand() {
if (isExternalSymbol())
delete contents.SymbolName;
@@ -367,7 +368,9 @@ class MachineInstr {
// OperandComplete - Return true if it's illegal to add a new operand
bool OperandsComplete() const;
- MachineInstr(const MachineInstr &); // DO NOT IMPLEMENT
+ //Constructor used by clone() method
+ MachineInstr(const MachineInstr&);
+
void operator=(const MachineInstr&); // DO NOT IMPLEMENT
// Intrusive list support
@@ -395,6 +398,9 @@ public:
const MachineBasicBlock* getParent() const { return parent; }
MachineBasicBlock* getParent() { return parent; }
+ //void setParent(const MachineBasicBlock *MBB) { parent = MBB; }
+ void setParent(MachineBasicBlock *MBB) { parent = MBB; }
+
/// getOpcode - Returns the opcode of this MachineInstr.
///
const int getOpcode() const { return Opcode; }
@@ -455,6 +461,12 @@ public:
MachineOperand::MO_VirtualRegister, V);
}
+ //Clone Instruction
+ //Create a copy of 'this' instruction that is
+ //identical in all ways except the following: The instruction has no
+ //parent The instruction has no name
+ MachineInstr* clone();
+
//
// Debugging support
//
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 38cd62e83f5..e1e44fd47e0 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -69,11 +69,29 @@ MachineInstr::MachineInstr(MachineBasicBlock *MBB, short opcode,
MBB->push_back(this); // Add instruction to end of basic block!
}
+///MachineInstr ctor - Copies MachineInstr arg exactly
+MachineInstr::MachineInstr(const MachineInstr &MI) {
+ Opcode = MI.getOpcode();
+ numImplicitRefs = MI.getNumImplicitRefs();
+
+ //Add operands
+ for(unsigned i=0; i < MI.getNumOperands(); ++i)
+ operands.push_back(MachineOperand(MI.getOperand(i)));
+}
+
+
MachineInstr::~MachineInstr()
{
LeakDetector::removeGarbageObject(this);
}
+///clone - Create a copy of 'this' instruction that is identical in
+///all ways except the following: The instruction has no parent The
+///instruction has no name
+MachineInstr* MachineInstr::clone() {
+ MachineInstr* newInst = new MachineInstr(*this);
+}
+
/// OperandComplete - Return true if it's illegal to add a new operand
///
bool MachineInstr::OperandsComplete() const {
@@ -93,6 +111,7 @@ void MachineInstr::replace(short opcode, unsigned numOperands) {
Opcode = opcode;
operands.clear();
operands.resize(numOperands, MachineOperand());
+
}
void MachineInstr::SetMachineOperandVal(unsigned i,