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move ConstValue into mir

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this way we have mir::ConstValue and ty::ValTree as reasonably parallel
This commit is contained in:
Ralf Jung
2023-09-16 09:36:22 +02:00
parent be8f5f6e7f
commit 5a0a1ff0cd
34 changed files with 245 additions and 254 deletions
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13
compiler/rustc_const_eval/src/const_eval/valtrees.rs
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@@ -4,9 +4,10 @@ use super::{ValTreeCreationError, ValTreeCreationResult, VALTREE_MAX_NODES};
use crate::const_eval::CanAccessStatics;
use crate::interpret::MPlaceTy;
use crate::interpret::{
intern_const_alloc_recursive, ConstValue, ImmTy, Immediate, InternKind, MemPlaceMeta,
MemoryKind, PlaceTy, Projectable, Scalar,
intern_const_alloc_recursive, ImmTy, Immediate, InternKind, MemPlaceMeta, MemoryKind, PlaceTy,
Projectable, Scalar,
};
use rustc_middle::mir;
use rustc_middle::ty::layout::{LayoutCx, LayoutOf, TyAndLayout};
use rustc_middle::ty::{self, ScalarInt, Ty, TyCtxt};
use rustc_span::source_map::DUMMY_SP;
@@ -206,7 +207,7 @@ pub fn valtree_to_const_value<'tcx>(
tcx: TyCtxt<'tcx>,
param_env_ty: ty::ParamEnvAnd<'tcx, Ty<'tcx>>,
valtree: ty::ValTree<'tcx>,
) -> ConstValue<'tcx> {
) -> mir::ConstValue<'tcx> {
// Basic idea: We directly construct `Scalar` values from trivial `ValTree`s
// (those for constants with type bool, int, uint, float or char).
// For all other types we create an `MPlace` and fill that by walking
@@ -219,10 +220,10 @@ pub fn valtree_to_const_value<'tcx>(
match ty.kind() {
ty::FnDef(..) => {
assert!(valtree.unwrap_branch().is_empty());
ConstValue::ZeroSized
mir::ConstValue::ZeroSized
}
ty::Bool | ty::Int(_) | ty::Uint(_) | ty::Float(_) | ty::Char => match valtree {
ty::ValTree::Leaf(scalar_int) => ConstValue::Scalar(Scalar::Int(scalar_int)),
ty::ValTree::Leaf(scalar_int) => mir::ConstValue::Scalar(Scalar::Int(scalar_int)),
ty::ValTree::Branch(_) => bug!(
"ValTrees for Bool, Int, Uint, Float or Char should have the form ValTree::Leaf"
),
@@ -237,7 +238,7 @@ pub fn valtree_to_const_value<'tcx>(
let layout = tcx.layout_of(param_env_ty).unwrap();
if layout.is_zst() {
// Fast path to avoid some allocations.
return ConstValue::ZeroSized;
return mir::ConstValue::ZeroSized;
}
if layout.abi.is_scalar()
&& (matches!(ty.kind(), ty::Tuple(_))