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Implement autoinserting ctor

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-10-29 23:19:00 +00:00
parent e316efc0e7
commit ddd7fcb887
1 changed files with 20 additions and 0 deletions
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20
lib/CodeGen/MachineInstr.cpp
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@ -3,6 +3,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Value.h"
#include "llvm/Target/MachineInstrInfo.h" // FIXME: shouldn't need this!
using std::cerr;
@ -33,6 +34,11 @@ MachineInstr::MachineInstr(MachineOpCode OpCode, unsigned numOperands)
{
}
/// MachineInstr ctor - This constructor only does a _reserve_ of the operands,
/// not a resize for them. It is expected that if you use this that you call
/// add* methods below to fill up the operands, instead of the Set methods.
/// Eventually, the "resizing" ctors will be phased out.
///
MachineInstr::MachineInstr(MachineOpCode Opcode, unsigned numOperands,
bool XX, bool YY)
: opCode(Opcode),
@ -41,6 +47,20 @@ MachineInstr::MachineInstr(MachineOpCode Opcode, unsigned numOperands,
operands.reserve(numOperands);
}
/// MachineInstr ctor - Work exactly the same as the ctor above, except that the
/// MachineInstr is created and added to the end of the specified basic block.
///
MachineInstr::MachineInstr(MachineBasicBlock *MBB, MachineOpCode Opcode,
unsigned numOperands)
: opCode(Opcode),
numImplicitRefs(0)
{
assert(MBB && "Cannot use inserting ctor with null basic block!");
operands.reserve(numOperands);
MBB->push_back(this); // Add instruction to end of basic block!
}
// OperandComplete - Return true if it's illegal to add a new operand
bool MachineInstr::OperandsComplete() const
{