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implement valtrees as the type-system representation for constant values

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This commit is contained in:
b-naber
2022-02-16 10:56:01 +01:00
parent edab34ab2a
commit 705d818bd5
116 changed files with 1606 additions and 1032 deletions
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33
compiler/rustc_const_eval/src/transform/promote_consts.rs
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@@ -765,7 +765,7 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> {
let unit = Rvalue::Use(Operand::Constant(Box::new(Constant {
span: statement.source_info.span,
user_ty: None,
literal: ty::Const::zero_sized(self.tcx, self.tcx.types.unit).into(),
literal: ConstantKind::zero_sized(self.tcx.types.unit),
})));
mem::replace(rhs, unit)
},
@@ -835,26 +835,25 @@ impl<'a, 'tcx> Promoter<'a, 'tcx> {
let mut promoted_operand = |ty, span| {
promoted.span = span;
promoted.local_decls[RETURN_PLACE] = LocalDecl::new(ty, span);
let _const = tcx.mk_const(ty::ConstS {
ty,
kind: ty::ConstKind::Unevaluated(ty::Unevaluated {
def,
substs: InternalSubsts::for_item(tcx, def.did, |param, _| {
if let ty::GenericParamDefKind::Lifetime = param.kind {
tcx.lifetimes.re_erased.into()
} else {
tcx.mk_param_from_def(param)
}
}),
promoted: Some(promoted_id),
}),
});
Operand::Constant(Box::new(Constant {
span,
user_ty: None,
literal: tcx
.mk_const(ty::ConstS {
ty,
kind: ty::ConstKind::Unevaluated(ty::Unevaluated {
def,
substs: InternalSubsts::for_item(tcx, def.did, |param, _| {
if let ty::GenericParamDefKind::Lifetime = param.kind {
tcx.lifetimes.re_erased.into()
} else {
tcx.mk_param_from_def(param)
}
}),
promoted: Some(promoted_id),
}),
})
.into(),
literal: ConstantKind::from_const(_const, tcx),
}))
};
let (blocks, local_decls) = self.source.basic_blocks_and_local_decls_mut();