---

yaml
---
r: 5114
b: refs/heads/master
c: 458ac89
h: refs/heads/master
v: v3

Author: marijnh

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ad3dcc0689b87c32fe7142c49846be75ef516a81
+refs/heads/master: 458ac89894bce025553aeda1a9a991e1ca3c05ed

trunk/src/comp/back/abi.rs

@@ -52,7 +52,7 @@ const tydesc_field_align: int = 2;
 const tydesc_field_take_glue: int = 3;
 const tydesc_field_drop_glue: int = 4;
 const tydesc_field_free_glue: int = 5;
-const tydesc_field_copy_glue: int = 6;
+const tydesc_field_unused: int = 6;
 const tydesc_field_sever_glue: int = 7;
 const tydesc_field_mark_glue: int = 8;
 const tydesc_field_is_stateful: int = 9;

trunk/src/comp/middle/trans.rs

@@ -1149,7 +1149,6 @@ fn declare_tydesc(cx: &@local_ctxt, sp: &span, t: ty::t, ty_params: &[uint])
           mutable drop_glue: none::<ValueRef>,
           mutable free_glue: none::<ValueRef>,
           mutable cmp_glue: none::<ValueRef>,
-          mutable copy_glue: none::<ValueRef>,
           ty_params: ty_params};
     log ~"--- declare_tydesc " + ty_to_str(cx.ccx.tcx, t);
     ret info;
@@ -1245,7 +1244,6 @@ fn emit_tydescs(ccx: &@crate_ctxt) {
     for each pair: @{key: ty::t, val: @tydesc_info} in ccx.tydescs.items() {
         let glue_fn_ty = T_ptr(T_glue_fn(*ccx));
         let cmp_fn_ty = T_ptr(T_cmp_glue_fn(*ccx));
-        let copy_fn_ty = T_ptr(T_copy_glue_fn(*ccx));
         let ti = pair.val;
         let take_glue =
             alt { ti.take_glue } {
@@ -1267,11 +1265,6 @@ fn emit_tydescs(ccx: &@crate_ctxt) {
               none. { ccx.stats.n_null_glues += 1u; C_null(cmp_fn_ty) }
               some(v) { ccx.stats.n_real_glues += 1u; v }
             };
-        let copy_glue =
-            alt { ti.copy_glue } {
-              none. { ccx.stats.n_null_glues += 1u; C_null(copy_fn_ty) }
-              some(v) { ccx.stats.n_real_glues += 1u; v }
-            };
 
         let shape = shape::shape_of(ccx, pair.key);
         let shape_tables =
@@ -1286,7 +1279,7 @@ fn emit_tydescs(ccx: &@crate_ctxt) {
                             take_glue, // take_glue
                             drop_glue, // drop_glue
                             free_glue, // free_glue
-                            copy_glue, // copy_glue
+                            C_null(T_ptr(T_i8())), // unused
                             C_null(glue_fn_ty), // sever_glue
                             C_null(glue_fn_ty), // mark_glue
                             C_null(glue_fn_ty), // is_stateful
@@ -1304,14 +1297,6 @@ fn emit_tydescs(ccx: &@crate_ctxt) {
     }
 }
 
-// NOTE this is currently just a complicated way to do memmove. I'm working on
-// a representation of ivecs that will need pointers into itself, which must
-// be adjusted when copying. Will flesh this out when the time comes.
-fn make_copy_glue(cx: &@block_ctxt, src: ValueRef, dst: ValueRef, t: ty::t) {
-    let bcx = memmove_ty(cx, dst, src, t).bcx;
-    build_return(bcx);
-}
-
 fn make_take_glue(cx: &@block_ctxt, v: ValueRef, t: ty::t) {
     let bcx = cx;
     // NB: v is an *alias* of type t here, not a direct value.
@@ -1878,7 +1863,6 @@ fn lazily_emit_all_tydesc_glue(cx: &@block_ctxt,
     lazily_emit_tydesc_glue(cx, abi::tydesc_field_drop_glue, static_ti);
     lazily_emit_tydesc_glue(cx, abi::tydesc_field_free_glue, static_ti);
     lazily_emit_tydesc_glue(cx, abi::tydesc_field_cmp_glue, static_ti);
-    lazily_emit_tydesc_glue(cx, abi::tydesc_field_copy_glue, static_ti);
 }
 
 fn lazily_emit_all_generic_info_tydesc_glues(cx: &@block_ctxt,
@@ -1958,20 +1942,6 @@ fn lazily_emit_tydesc_glue(cx: &@block_ctxt, field: int,
                          ty_to_str(bcx_tcx(cx), ti.ty)];
               }
             }
-        } else if field == abi::tydesc_field_copy_glue {
-            alt { ti.copy_glue } {
-              some(_) {}
-              none. {
-                let lcx = cx.fcx.lcx;
-                let glue_fn =
-                    declare_generic_glue(lcx, ti.ty, T_copy_glue_fn(*lcx.ccx),
-                                         ~"copy");
-                ti.copy_glue = some(glue_fn);
-                make_generic_glue(lcx, cx.sp, ti.ty, glue_fn,
-                                  copy_helper(make_copy_glue),
-                                  ti.ty_params, ~"copy");
-              }
-            }
         }
       }
     }
@@ -2060,47 +2030,6 @@ fn call_cmp_glue(cx: &@block_ctxt, lhs: ValueRef, rhs: ValueRef, t: ty::t,
     ret rslt(r.bcx, Load(r.bcx, llcmpresultptr));
 }
 
-fn call_copy_glue(cx: &@block_ctxt, dst: ValueRef, src: ValueRef, t: ty::t,
-                  take: bool) -> @block_ctxt {
-    // You can't call this on immediate types. Those are simply copied with
-    // Load/Store.
-    assert !type_is_immediate(bcx_ccx(cx), t);
-    let srcptr = BitCast(cx, src, T_ptr(T_i8()));
-    let dstptr = BitCast(cx, dst, T_ptr(T_i8()));
-    let ti = none;
-    let {bcx, val: lltydesc} =
-        get_tydesc(cx, t, false, tps_normal, ti).result;
-    lazily_emit_tydesc_glue(cx, abi::tydesc_field_copy_glue, ti);
-    let lltydescs = GEP
-        (bcx, lltydesc, [C_int(0), C_int(abi::tydesc_field_first_param)]);
-    lltydescs = Load(bcx, lltydescs);
-
-    let llfn = alt ti {
-      none. {
-        Load(bcx, GEP
-            (bcx, lltydesc, [C_int(0), C_int(abi::tydesc_field_copy_glue)]))
-      }
-      some(sti) { option::get(sti.copy_glue) }
-    };
-    Call(bcx, llfn, [C_null(T_ptr(T_nil())), bcx.fcx.lltaskptr,
-                          C_null(T_ptr(T_nil())), lltydescs, srcptr, dstptr]);
-    if take {
-        lazily_emit_tydesc_glue(cx, abi::tydesc_field_take_glue, ti);
-        llfn = alt ti {
-          none. {
-            Load(bcx, GEP(bcx, lltydesc,
-                                    [C_int(0),
-                                     C_int(abi::tydesc_field_take_glue)]))
-          }
-          some(sti) { option::get(sti.take_glue) }
-        };
-        Call(bcx, llfn, [C_null(T_ptr(T_nil())), bcx.fcx.lltaskptr,
-                              C_null(T_ptr(T_nil())), lltydescs, dstptr]);
-    }
-    ret bcx;
-}
-
-
 // Compares two values. Performs the simple scalar comparison if the types are
 // scalar and calls to comparison glue otherwise.
 fn compare(cx: &@block_ctxt, lhs: ValueRef, rhs: ValueRef, t: ty::t,

trunk/src/comp/middle/trans_common.rs

@@ -87,7 +87,6 @@ type tydesc_info =
      mutable drop_glue: option::t<ValueRef>,
      mutable free_glue: option::t<ValueRef>,
      mutable cmp_glue: option::t<ValueRef>,
-     mutable copy_glue: option::t<ValueRef>,
      ty_params: [uint]};
 
 /*
@@ -620,14 +619,6 @@ fn T_cmp_glue_fn(cx: &crate_ctxt) -> TypeRef {
     ret t;
 }
 
-fn T_copy_glue_fn(cx: &crate_ctxt) -> TypeRef {
-    let s = ~"copy_glue_fn";
-    if cx.tn.name_has_type(s) { ret cx.tn.get_type(s); }
-    let t = T_tydesc_field(cx, abi::tydesc_field_copy_glue);
-    cx.tn.associate(s, t);
-    ret t;
-}
-
 fn T_tydesc(taskptr_type: TypeRef) -> TypeRef {
     let tydesc = T_named_struct(~"tydesc");
     let tydescpp = T_ptr(T_ptr(tydesc));
@@ -638,13 +629,10 @@ fn T_tydesc(taskptr_type: TypeRef) -> TypeRef {
     let cmp_glue_fn_ty =
         T_ptr(T_fn([T_ptr(T_i1()), taskptr_type, T_ptr(tydesc), tydescpp,
                     pvoid, pvoid, T_i8()], T_void()));
-    let copy_glue_fn_ty =
-        T_ptr(T_fn([T_ptr(T_nil()), taskptr_type, T_ptr(T_nil()), tydescpp,
-                    pvoid, pvoid], T_void()));
 
     let elems =
         [tydescpp, T_int(), T_int(), glue_fn_ty, glue_fn_ty, glue_fn_ty,
-         copy_glue_fn_ty, glue_fn_ty, glue_fn_ty, glue_fn_ty, cmp_glue_fn_ty,
+         T_ptr(T_i8()), glue_fn_ty, glue_fn_ty, glue_fn_ty, cmp_glue_fn_ty,
          T_ptr(T_i8()), T_ptr(T_i8()), T_int(), T_int()];
     set_struct_body(tydesc, elems);
     ret tydesc;

trunk/src/rt/rust_internal.h

@@ -257,8 +257,6 @@ struct rust_timer {
 
 typedef void CDECL (glue_fn)(void *, rust_task *, void *,
                              const type_desc **, void *);
-typedef void CDECL (copy_glue_fn)(void *, rust_task *, void *,
-                                  const type_desc **, void *, void *);
 typedef void CDECL (cmp_glue_fn)(void *, rust_task *, void *,
                                  const type_desc **,
                                  void *, void *, int8_t);
@@ -277,7 +275,7 @@ struct type_desc {
     glue_fn *take_glue;
     glue_fn *drop_glue;
     glue_fn *free_glue;
-    copy_glue_fn *copy_glue;
+    void *unused;
     glue_fn *sever_glue;    // For GC.
     glue_fn *mark_glue;     // For GC.
     uintptr_t is_stateful;