Method readStackPointer

compiler/llvm.go:442–453

readStackPointer emits a LLVM intrinsic call that returns the current stack pointer as an *i8.

()

// readStackPointer emits a LLVM intrinsic call that returns the current stack
// pointer as an *i8.
func (b *builder) readStackPointer() llvm.Value {
	name := "llvm.stacksave.p0"
	if llvmutil.Version() < 18 {
		name = "llvm.stacksave" // backwards compatibility with LLVM 17 and below
	}
	stacksave := b.mod.NamedFunction(name)
	if stacksave.IsNil() {
		fnType := llvm.FunctionType(b.dataPtrType, nil, false)
		stacksave = llvm.AddFunction(b.mod, name, fnType)
	}
	return b.CreateCall(stacksave.GlobalValueType(), stacksave, nil, "")
}

// writeStackPointer emits a LLVM intrinsic call that updates the current stack
// pointer.