bjoernager/rust
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Add Ty to mir::Const::Ty

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This commit is contained in:
Boxy 2024-06-03 04:46:24 +01:00
parent 8d6705cdb8
commit 60a5bebbe5
19 changed files with 81 additions and 51 deletions
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5
compiler/rustc_mir_transform/src/dataflow_const_prop.rs
View file

@ -203,7 +203,8 @@ impl<'tcx> ValueAnalysis<'tcx> for ConstAnalysis<'_, 'tcx> {
&& let operand_ty = operand.ty(self.local_decls, self.tcx)
&& let Some(operand_ty) = operand_ty.builtin_deref(true)
&& let ty::Array(_, len) = operand_ty.kind()
&& let Some(len) = Const::Ty(*len).try_eval_scalar_int(self.tcx, self.param_env)
&& let Some(len) = Const::Ty(self.tcx.types.usize, *len)
.try_eval_scalar_int(self.tcx, self.param_env)
{
state.insert_value_idx(target_len, FlatSet::Elem(len.into()), self.map());
}
@ -221,7 +222,7 @@ impl<'tcx> ValueAnalysis<'tcx> for ConstAnalysis<'_, 'tcx> {
Rvalue::Len(place) => {
let place_ty = place.ty(self.local_decls, self.tcx);
if let ty::Array(_, len) = place_ty.ty.kind() {
Const::Ty(*len)
Const::Ty(self.tcx.types.usize, *len)
.try_eval_scalar(self.tcx, self.param_env)
.map_or(FlatSet::Top, FlatSet::Elem)
} else if let [ProjectionElem::Deref] = place.projection[..] {

12
compiler/rustc_mir_transform/src/gvn.rs
View file

@ -1108,7 +1108,11 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
// Trivial case: we are fetching a statically known length.
let place_ty = place.ty(self.local_decls, self.tcx).ty;
if let ty::Array(_, len) = place_ty.kind() {
return self.insert_constant(Const::from_ty_const(*len, self.tcx));
return self.insert_constant(Const::from_ty_const(
*len,
self.tcx.types.usize,
self.tcx,
));
}
let mut inner = self.simplify_place_value(place, location)?;
@ -1130,7 +1134,11 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
&& let Some(to) = to.builtin_deref(true)
&& let ty::Slice(..) = to.kind()
{
return self.insert_constant(Const::from_ty_const(*len, self.tcx));
return self.insert_constant(Const::from_ty_const(
*len,
self.tcx.types.usize,
self.tcx,
));
}
// Fallback: a symbolic `Len`.

2
compiler/rustc_mir_transform/src/instsimplify.rs
View file

@ -150,7 +150,7 @@ impl<'tcx> InstSimplifyContext<'tcx, '_> {
return;
}
let const_ = Const::from_ty_const(len, self.tcx);
let const_ = Const::from_ty_const(len, self.tcx.types.usize, self.tcx);
let constant = ConstOperand { span: source_info.span, const_, user_ty: None };
*rvalue = Rvalue::Use(Operand::Constant(Box::new(constant)));
}

2
compiler/rustc_mir_transform/src/normalize_array_len.rs
View file

@ -95,7 +95,7 @@ impl<'tcx> MutVisitor<'tcx> for Replacer<'tcx> {
*rvalue = Rvalue::Use(Operand::Constant(Box::new(ConstOperand {
span: rustc_span::DUMMY_SP,
user_ty: None,
const_: Const::from_ty_const(len, self.tcx),
const_: Const::from_ty_const(len, self.tcx.types.usize, self.tcx),
})));
}
self.super_rvalue(rvalue, loc);