/// <summary>
/// Emits the instructions within a branch.
/// </summary>
/// <param name="codeGen">The code generator.</param>
/// <param name="branch">The branch.</param>
private void emitInstructionsInBranch(CodeGenerator codeGen, Branch branch)
{
// Check dependencies.
foreach (Branch source in branch.Sources)
{
if (source.Generation == 0)
{
source.Generation++;
emitInstructionsInBranch(codeGen, source);
}
}
branch.Generation++;
if (branch.Generation > 2)
{
return;
}
mContext.CurrentStack = branch.Stack;
branch.UpdateStack(mBuilder);
LLVM.PositionBuilderAtEnd(mBuilder, branch.Block);
foreach (Instruction instruction in branch.Instructions)
{
FlowControl flow = instruction.OpCode.FlowControl;
codeGen.Emit(instruction, mContext, mBuilder);
// If the next instruction is a new block, and we didn't have an explicit branch instruction to the next block,
// then we need to create the branch instruction explicitely.
if (mContext.IsNewBranch(instruction.Next))
{
// If this instruction did not branch already...
if (flow != FlowControl.Branch && flow != FlowControl.Cond_Branch && flow != FlowControl.Return)
{
LLVM.BuildBr(mBuilder, mContext.GetBlockOf(instruction.Next));
}
}
}
}