Sha256: a6dbd1f8b704e39f9252a236f62a89c85e34fac3f4141724a5db536b35d73d68
Contents?: true
Size: 1.53 KB
Versions: 7
Compression:
Stored size: 1.53 KB
Contents
use super::*;
use crate::ir;
use cranelift_control::ControlPlane;
/// State carried between emissions of a sequence of instructions.
#[derive(Default, Clone, Debug)]
pub struct EmitState {
/// The user stack map for the upcoming instruction, as provided to
/// `pre_safepoint()`.
user_stack_map: Option<ir::UserStackMap>,
/// Only used during fuzz-testing. Otherwise, it is a zero-sized struct and
/// optimized away at compiletime. See [cranelift_control].
ctrl_plane: ControlPlane,
/// A copy of the frame layout, used during the emission of `Inst::ReturnCallKnown` and
/// `Inst::ReturnCallUnknown` instructions.
frame_layout: FrameLayout,
}
impl MachInstEmitState<Inst> for EmitState {
fn new(abi: &Callee<X64ABIMachineSpec>, ctrl_plane: ControlPlane) -> Self {
EmitState {
user_stack_map: None,
ctrl_plane,
frame_layout: abi.frame_layout().clone(),
}
}
fn pre_safepoint(&mut self, user_stack_map: Option<ir::UserStackMap>) {
self.user_stack_map = user_stack_map;
}
fn ctrl_plane_mut(&mut self) -> &mut ControlPlane {
&mut self.ctrl_plane
}
fn take_ctrl_plane(self) -> ControlPlane {
self.ctrl_plane
}
fn frame_layout(&self) -> &FrameLayout {
&self.frame_layout
}
}
impl EmitState {
pub(crate) fn take_stack_map(&mut self) -> Option<ir::UserStackMap> {
self.user_stack_map.take()
}
pub(crate) fn clear_post_insn(&mut self) {
self.user_stack_map = None;
}
}
Version data entries
7 entries across 7 versions & 1 rubygems