rustc_mir_build/build/
misc.rsuse rustc_middle::mir::*;
use rustc_middle::ty::{self, Ty};
use rustc_span::Span;
use rustc_trait_selection::infer::InferCtxtExt;
use tracing::debug;
use crate::build::Builder;
impl<'a, 'tcx> Builder<'a, 'tcx> {
pub(crate) fn temp(&mut self, ty: Ty<'tcx>, span: Span) -> Place<'tcx> {
let temp = self.local_decls.push(LocalDecl::new(ty, span));
let place = Place::from(temp);
debug!("temp: created temp {:?} with type {:?}", place, self.local_decls[temp].ty);
place
}
pub(crate) fn literal_operand(&mut self, span: Span, const_: Const<'tcx>) -> Operand<'tcx> {
let constant = Box::new(ConstOperand { span, user_ty: None, const_ });
Operand::Constant(constant)
}
pub(crate) fn zero_literal(&mut self, span: Span, ty: Ty<'tcx>) -> Operand<'tcx> {
let literal = Const::from_bits(self.tcx, 0, ty::TypingEnv::fully_monomorphized(), ty);
self.literal_operand(span, literal)
}
pub(crate) fn push_usize(
&mut self,
block: BasicBlock,
source_info: SourceInfo,
value: u64,
) -> Place<'tcx> {
let usize_ty = self.tcx.types.usize;
let temp = self.temp(usize_ty, source_info.span);
self.cfg.push_assign_constant(block, source_info, temp, ConstOperand {
span: source_info.span,
user_ty: None,
const_: Const::from_usize(self.tcx, value),
});
temp
}
pub(crate) fn consume_by_copy_or_move(&self, place: Place<'tcx>) -> Operand<'tcx> {
let tcx = self.tcx;
let ty = place.ty(&self.local_decls, tcx).ty;
if !self.infcx.type_is_copy_modulo_regions(self.param_env, ty) {
Operand::Move(place)
} else {
Operand::Copy(place)
}
}
}