Method insertBasicBlock

compiler/llvm.go:33–43

insertBasicBlock inserts a new basic block after the current basic block. This is useful when inserting new basic blocks while converting a *ssa.BasicBlock to a llvm.BasicBlock and the LLVM basic block needs some extra blocks. It does not update b.blockExits, this must be done by the caller.

(name string)

// extra blocks.
// It does not update b.blockExits, this must be done by the caller.
func (b *builder) insertBasicBlock(name string) llvm.BasicBlock {
	currentBB := b.Builder.GetInsertBlock()
	nextBB := llvm.NextBasicBlock(currentBB)
	if nextBB.IsNil() {
		// Last basic block in the function, so add one to the end.
		return b.ctx.AddBasicBlock(b.llvmFn, name)
	}
	// Insert a basic block before the next basic block - that is, at the
	// current insert location.
	return b.ctx.InsertBasicBlock(nextBB, name)
}

// emitLifetimeEnd signals the end of an (alloca) lifetime by calling the
// llvm.lifetime.end intrinsic. It is commonly used together with