Remove the TypedConstVal

Replace it with ConstUsize instead, which is more appropriate; we are not using the rest of the
TypedConstVal anyway

Author: nagisa

src/librustc/mir/mod.rs

@@ -983,7 +983,7 @@ pub enum Rvalue<'tcx> {
     Use(Operand<'tcx>),
 
     /// [x; 32]
-    Repeat(Operand<'tcx>, TypedConstVal<'tcx>),
+    Repeat(Operand<'tcx>, ConstUsize),
 
     /// &x or &mut x
     Ref(&'tcx Region, BorrowKind, Lvalue<'tcx>),
@@ -1203,19 +1203,6 @@ pub struct Constant<'tcx> {
     pub literal: Literal<'tcx>,
 }
 
-#[derive(Clone, RustcEncodable, RustcDecodable)]
-pub struct TypedConstVal<'tcx> {
-    pub ty: Ty<'tcx>,
-    pub span: Span,
-    pub value: ConstUsize,
-}
-
-impl<'tcx> Debug for TypedConstVal<'tcx> {
-    fn fmt(&self, fmt: &mut Formatter) -> fmt::Result {
-        write!(fmt, "const {}", ConstInt::Usize(self.value))
-    }
-}
-
 newtype_index!(Promoted, "promoted");
 
 #[derive(Clone, PartialEq, Eq, Hash, RustcEncodable, RustcDecodable)]

src/librustc/mir/tcx.rs

@@ -140,7 +140,7 @@ impl<'tcx> Rvalue<'tcx> {
             Rvalue::Use(ref operand) => operand.ty(mir, tcx),
             Rvalue::Repeat(ref operand, ref count) => {
                 let op_ty = operand.ty(mir, tcx);
-                let count = count.value.as_u64(tcx.sess.target.uint_type);
+                let count = count.as_u64(tcx.sess.target.uint_type);
                 assert_eq!(count as usize as u64, count);
                 tcx.mk_array(op_ty, count as usize)
             }

src/librustc/mir/visit.rs

@@ -235,12 +235,6 @@ macro_rules! make_mir_visitor {
                 self.super_const_usize(const_usize);
             }
 
-            fn visit_typed_const_val(&mut self,
-                                     val: & $($mutability)* TypedConstVal<'tcx>,
-                                     location: Location) {
-                self.super_typed_const_val(val, location);
-            }
-
             fn visit_local_decl(&mut self,
                                 local_decl: & $($mutability)* LocalDecl<'tcx>) {
                 self.super_local_decl(local_decl);
@@ -467,9 +461,9 @@ macro_rules! make_mir_visitor {
                     }
 
                     Rvalue::Repeat(ref $($mutability)* value,
-                                   ref $($mutability)* typed_const_val) => {
+                                   ref $($mutability)* length) => {
                         self.visit_operand(value, location);
-                        self.visit_typed_const_val(typed_const_val, location);
+                        self.visit_const_usize(length, location);
                     }
 
                     Rvalue::Ref(r, bk, ref $($mutability)* path) => {
@@ -648,20 +642,6 @@ macro_rules! make_mir_visitor {
                 self.visit_literal(literal, location);
             }
 
-            fn super_typed_const_val(&mut self,
-                                     constant: & $($mutability)* TypedConstVal<'tcx>,
-                                     location: Location) {
-                let TypedConstVal {
-                    ref $($mutability)* span,
-                    ref $($mutability)* ty,
-                    ref $($mutability)* value,
-                } = *constant;
-
-                self.visit_span(span);
-                self.visit_ty(ty);
-                self.visit_const_usize(value, location);
-            }
-
             fn super_literal(&mut self,
                              literal: & $($mutability)* Literal<'tcx>,
                              location: Location) {

src/librustc_mir/hair/cx/expr.rs

@@ -602,11 +602,7 @@ fn make_mirror_unadjusted<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
 
             ExprKind::Repeat {
                 value: v.to_ref(),
-                count: TypedConstVal {
-                    ty: cx.tcx.types.usize,
-                    span: c.span,
-                    value: count
-                }
+                count: count,
             }
         }
         hir::ExprRet(ref v) => ExprKind::Return { value: v.to_ref() },

src/librustc_mir/hair/mod.rs

@@ -14,7 +14,8 @@
 //! unit-tested and separated from the Rust source and compiler data
 //! structures.
 
-use rustc::mir::{BinOp, BorrowKind, Field, Literal, UnOp, TypedConstVal};
+use rustc_const_math::ConstUsize;
+use rustc::mir::{BinOp, BorrowKind, Field, Literal, UnOp};
 use rustc::hir::def_id::DefId;
 use rustc::middle::region::CodeExtent;
 use rustc::ty::subst::Substs;
@@ -219,7 +220,7 @@ pub enum ExprKind<'tcx> {
     },
     Repeat {
         value: ExprRef<'tcx>,
-        count: TypedConstVal<'tcx>,
+        count: ConstUsize,
     },
     Array {
         fields: Vec<ExprRef<'tcx>>,

src/librustc_passes/mir_stats.rs

@@ -19,7 +19,7 @@ use rustc::mir::{Constant, Literal, Location, LocalDecl};
 use rustc::mir::{Lvalue, LvalueElem, LvalueProjection};
 use rustc::mir::{Mir, Operand, ProjectionElem};
 use rustc::mir::{Rvalue, SourceInfo, Statement, StatementKind};
-use rustc::mir::{Terminator, TerminatorKind, TypedConstVal, VisibilityScope, VisibilityScopeData};
+use rustc::mir::{Terminator, TerminatorKind, VisibilityScope, VisibilityScopeData};
 use rustc::mir::visit as mir_visit;
 use rustc::mir::visit::Visitor;
 use rustc::ty::{ClosureSubsts, TyCtxt};
@@ -297,13 +297,6 @@ impl<'a, 'tcx> mir_visit::Visitor<'tcx> for StatCollector<'a, 'tcx> {
         self.super_const_usize(const_usize);
     }
 
-    fn visit_typed_const_val(&mut self,
-                             val: &TypedConstVal<'tcx>,
-                             location: Location) {
-        self.record("TypedConstVal", val);
-        self.super_typed_const_val(val, location);
-    }
-
     fn visit_local_decl(&mut self,
                         local_decl: &LocalDecl<'tcx>) {
         self.record("LocalDecl", local_decl);

src/librustc_trans/mir/constant.rs

@@ -529,7 +529,7 @@ impl<'a, 'tcx> MirConstContext<'a, 'tcx> {
 
             mir::Rvalue::Repeat(ref elem, ref count) => {
                 let elem = self.const_operand(elem, span)?;
-                let size = count.value.as_u64(tcx.sess.target.uint_type);
+                let size = count.as_u64(tcx.sess.target.uint_type);
                 let fields = vec![elem.llval; size as usize];
                 self.const_array(dest_ty, &fields)
             }

src/librustc_trans/mir/rvalue.rs

@@ -95,7 +95,7 @@ impl<'a, 'tcx> MirContext<'a, 'tcx> {
 
             mir::Rvalue::Repeat(ref elem, ref count) => {
                 let tr_elem = self.trans_operand(&bcx, elem);
-                let size = count.value.as_u64(bcx.tcx().sess.target.uint_type);
+                let size = count.as_u64(bcx.tcx().sess.target.uint_type);
                 let size = C_uint(bcx.ccx, size);
                 let base = base::get_dataptr(&bcx, dest.llval);
                 tvec::slice_for_each(&bcx, base, tr_elem.ty, size, |bcx, llslot| {