mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
4b74c83334
* Add new constructors to allow insertion of terminator instructions at the end of basic blocks. * Move a ReturnInst method out-of-line, so that the vtable and type info don't need to be emitted to every translation unit that uses the class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10107 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//===-- iSwitch.cpp - Implement the Switch instruction --------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the Switch instruction...
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/iTerminators.h"
|
|
#include "llvm/BasicBlock.h"
|
|
using namespace llvm;
|
|
|
|
SwitchInst::SwitchInst(Value *V, BasicBlock *DefaultDest,
|
|
Instruction *InsertBefore)
|
|
: TerminatorInst(Instruction::Switch, InsertBefore) {
|
|
assert(V && DefaultDest);
|
|
Operands.push_back(Use(V, this));
|
|
Operands.push_back(Use(DefaultDest, this));
|
|
}
|
|
|
|
SwitchInst::SwitchInst(Value *V, BasicBlock *DefaultDest,
|
|
BasicBlock *InsertAtEnd)
|
|
: TerminatorInst(Instruction::Switch, InsertAtEnd) {
|
|
assert(V && DefaultDest);
|
|
Operands.push_back(Use(V, this));
|
|
Operands.push_back(Use(DefaultDest, this));
|
|
}
|
|
|
|
SwitchInst::SwitchInst(const SwitchInst &SI)
|
|
: TerminatorInst(Instruction::Switch) {
|
|
Operands.reserve(SI.Operands.size());
|
|
|
|
for (unsigned i = 0, E = SI.Operands.size(); i != E; i+=2) {
|
|
Operands.push_back(Use(SI.Operands[i], this));
|
|
Operands.push_back(Use(SI.Operands[i+1], this));
|
|
}
|
|
}
|
|
|
|
/// addCase - Add an entry to the switch instruction...
|
|
///
|
|
void SwitchInst::addCase(Constant *OnVal, BasicBlock *Dest) {
|
|
Operands.push_back(Use((Value*)OnVal, this));
|
|
Operands.push_back(Use((Value*)Dest, this));
|
|
}
|
|
|
|
/// removeCase - This method removes the specified successor from the switch
|
|
/// instruction. Note that this cannot be used to remove the default
|
|
/// destination (successor #0).
|
|
///
|
|
void SwitchInst::removeCase(unsigned idx) {
|
|
assert(idx != 0 && "Cannot remove the default case!");
|
|
assert(idx*2 < Operands.size() && "Successor index out of range!!!");
|
|
Operands.erase(Operands.begin()+idx*2, Operands.begin()+(idx+1)*2);
|
|
}
|