diff --git a/src/libcore/cleanup.rs b/src/libcore/cleanup.rs
index 567d6da23a6..6912d6d995b 100644
--- a/src/libcore/cleanup.rs
+++ b/src/libcore/cleanup.rs
@@ -154,7 +154,7 @@ fn debug_mem() -> bool {
 #[cfg(notest)]
 #[lang="annihilate"]
 pub unsafe fn annihilate() {
-    use rt::rt_free;
+    use rt::local_free;
     use io::WriterUtil;
     use io;
     use libc;
@@ -192,7 +192,7 @@ pub unsafe fn annihilate() {
             stats.n_bytes_freed +=
                 (*((*box).header.type_desc)).size
                 + sys::size_of::<BoxRepr>();
-            rt_free(transmute(box));
+            local_free(transmute(box));
         }
     }
 
diff --git a/src/libcore/rt.rs b/src/libcore/rt.rs
index c3e4f925c40..5d0bad3ceb3 100644
--- a/src/libcore/rt.rs
+++ b/src/libcore/rt.rs
@@ -36,60 +36,54 @@ pub extern mod rustrt {
     unsafe fn rust_upcall_free(ptr: *c_char);
 }
 
-#[rt(fail_)]
 #[lang="fail_"]
-pub fn rt_fail_(expr: *c_char, file: *c_char, line: size_t) -> ! {
+pub fn fail_(expr: *c_char, file: *c_char, line: size_t) -> ! {
     sys::begin_unwind_(expr, file, line);
 }
 
-#[rt(fail_bounds_check)]
 #[lang="fail_bounds_check"]
-pub unsafe fn rt_fail_bounds_check(file: *c_char, line: size_t,
-                                   index: size_t, len: size_t) {
+pub unsafe fn fail_bounds_check(file: *c_char, line: size_t,
+                                index: size_t, len: size_t) {
     let msg = fmt!("index out of bounds: the len is %d but the index is %d",
                     len as int, index as int);
     do str::as_buf(msg) |p, _len| {
-        rt_fail_(p as *c_char, file, line);
+        fail_(p as *c_char, file, line);
     }
 }
 
-pub unsafe fn rt_fail_borrowed() {
+pub unsafe fn fail_borrowed() {
     let msg = "borrowed";
     do str::as_buf(msg) |msg_p, _| {
         do str::as_buf("???") |file_p, _| {
-            rt_fail_(msg_p as *c_char, file_p as *c_char, 0);
+            fail_(msg_p as *c_char, file_p as *c_char, 0);
         }
     }
 }
 
 // FIXME #4942: Make these signatures agree with exchange_alloc's signatures
-#[rt(exchange_malloc)]
 #[lang="exchange_malloc"]
-pub unsafe fn rt_exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char {
+pub unsafe fn exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char {
     transmute(exchange_alloc::malloc(transmute(td), transmute(size)))
 }
 
 // NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
 // inside a landing pad may corrupt the state of the exception handler. If a
 // problem occurs, call exit instead.
-#[rt(exchange_free)]
 #[lang="exchange_free"]
-pub unsafe fn rt_exchange_free(ptr: *c_char) {
+pub unsafe fn exchange_free(ptr: *c_char) {
     exchange_alloc::free(transmute(ptr))
 }
 
-#[rt(malloc)]
 #[lang="malloc"]
-pub unsafe fn rt_malloc(td: *c_char, size: uintptr_t) -> *c_char {
+pub unsafe fn local_malloc(td: *c_char, size: uintptr_t) -> *c_char {
     return rustrt::rust_upcall_malloc(td, size);
 }
 
 // NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
 // inside a landing pad may corrupt the state of the exception handler. If a
 // problem occurs, call exit instead.
-#[rt(free)]
 #[lang="free"]
-pub unsafe fn rt_free(ptr: *c_char) {
+pub unsafe fn local_free(ptr: *c_char) {
     rustrt::rust_upcall_free(ptr);
 }
 
@@ -112,7 +106,7 @@ pub unsafe fn return_to_mut(a: *u8) {
 pub unsafe fn check_not_borrowed(a: *u8) {
     let a: *mut BoxRepr = transmute(a);
     if ((*a).header.ref_count & FROZEN_BIT) != 0 {
-        rt_fail_borrowed();
+        fail_borrowed();
     }
 }
 
diff --git a/src/librustc/middle/trans/_match.rs b/src/librustc/middle/trans/_match.rs
index 3686c31ea6e..8ed85b8f421 100644
--- a/src/librustc/middle/trans/_match.rs
+++ b/src/librustc/middle/trans/_match.rs
@@ -1054,7 +1054,7 @@ pub fn compare_values(cx: block,
             let scratch_rhs = alloca(cx, val_ty(rhs));
             Store(cx, rhs, scratch_rhs);
             let did = cx.tcx().lang_items.uniq_str_eq_fn();
-            let bcx = callee::trans_rtcall_or_lang_call(cx, did,
+            let bcx = callee::trans_lang_call(cx, did,
                                                         ~[scratch_lhs,
                                                           scratch_rhs],
                                                         expr::SaveIn(
@@ -1069,7 +1069,7 @@ pub fn compare_values(cx: block,
             let scratch_result = scratch_datum(cx, ty::mk_bool(cx.tcx()),
                                                false);
             let did = cx.tcx().lang_items.str_eq_fn();
-            let bcx = callee::trans_rtcall_or_lang_call(cx, did,
+            let bcx = callee::trans_lang_call(cx, did,
                                                         ~[lhs, rhs],
                                                         expr::SaveIn(
                                                          scratch_result.val));
diff --git a/src/librustc/middle/trans/base.rs b/src/librustc/middle/trans/base.rs
index 786f3c85d6b..0e0b382869d 100644
--- a/src/librustc/middle/trans/base.rs
+++ b/src/librustc/middle/trans/base.rs
@@ -307,7 +307,7 @@ pub fn malloc_raw_dyn(bcx: block,
     // Allocate space:
     let tydesc = PointerCast(bcx, static_ti.tydesc, T_ptr(T_i8()));
     let rval = alloca(bcx, T_ptr(T_i8()));
-    let bcx = callee::trans_rtcall_or_lang_call(
+    let bcx = callee::trans_lang_call(
         bcx,
         langcall,
         ~[tydesc, size],
diff --git a/src/librustc/middle/trans/callee.rs b/src/librustc/middle/trans/callee.rs
index 6924ccf3ab6..42542d79f39 100644
--- a/src/librustc/middle/trans/callee.rs
+++ b/src/librustc/middle/trans/callee.rs
@@ -332,11 +332,11 @@ pub fn trans_method_call(in_cx: block,
         DontAutorefArg)
 }
 
-pub fn trans_rtcall_or_lang_call(bcx: block,
-                                 did: ast::def_id,
-                                 args: &[ValueRef],
-                                 dest: expr::Dest)
-                              -> block {
+pub fn trans_lang_call(bcx: block,
+                       did: ast::def_id,
+                       args: &[ValueRef],
+                       dest: expr::Dest)
+    -> block {
     let fty = if did.crate == ast::local_crate {
         ty::node_id_to_type(bcx.ccx().tcx, did.node)
     } else {
@@ -349,12 +349,12 @@ pub fn trans_rtcall_or_lang_call(bcx: block,
         ArgVals(args), dest, DontAutorefArg);
 }
 
-pub fn trans_rtcall_or_lang_call_with_type_params(bcx: block,
-                                                  did: ast::def_id,
-                                                  args: &[ValueRef],
-                                                  type_params: ~[ty::t],
-                                                  dest: expr::Dest)
-                                               -> block {
+pub fn trans_lang_call_with_type_params(bcx: block,
+                                        did: ast::def_id,
+                                        args: &[ValueRef],
+                                        type_params: ~[ty::t],
+                                        dest: expr::Dest)
+    -> block {
     let fty;
     if did.crate == ast::local_crate {
         fty = ty::node_id_to_type(bcx.tcx(), did.node);
diff --git a/src/librustc/middle/trans/closure.rs b/src/librustc/middle/trans/closure.rs
index 1409199a0d2..40407fbf52b 100644
--- a/src/librustc/middle/trans/closure.rs
+++ b/src/librustc/middle/trans/closure.rs
@@ -500,7 +500,7 @@ pub fn make_opaque_cbox_take_glue(
         // Allocate memory, update original ptr, and copy existing data
         let opaque_tydesc = PointerCast(bcx, tydesc, T_ptr(T_i8()));
         let rval = alloca(bcx, T_ptr(T_i8()));
-        let bcx = callee::trans_rtcall_or_lang_call(
+        let bcx = callee::trans_lang_call(
             bcx,
             bcx.tcx().lang_items.exchange_malloc_fn(),
             ~[opaque_tydesc, sz],
diff --git a/src/librustc/middle/trans/common.rs b/src/librustc/middle/trans/common.rs
index c45278ee454..566b2689f2e 100644
--- a/src/librustc/middle/trans/common.rs
+++ b/src/librustc/middle/trans/common.rs
@@ -445,7 +445,7 @@ pub fn add_clean_frozen_root(bcx: block, val: ValueRef, t: ty::t) {
     do in_scope_cx(bcx) |scope_info| {
         scope_info.cleanups.push(
             clean_temp(val, |bcx| {
-                let bcx = callee::trans_rtcall_or_lang_call(
+                let bcx = callee::trans_lang_call(
                     bcx,
                     bcx.tcx().lang_items.return_to_mut_fn(),
                     ~[
diff --git a/src/librustc/middle/trans/controlflow.rs b/src/librustc/middle/trans/controlflow.rs
index 57cb1a93776..70321d50f3f 100644
--- a/src/librustc/middle/trans/controlflow.rs
+++ b/src/librustc/middle/trans/controlflow.rs
@@ -216,7 +216,7 @@ pub fn trans_log(log_ex: @ast::expr,
             // Call the polymorphic log function
             let val = val_datum.to_ref_llval(bcx);
             let did = bcx.tcx().lang_items.log_type_fn();
-            let bcx = callee::trans_rtcall_or_lang_call_with_type_params(
+            let bcx = callee::trans_lang_call_with_type_params(
                 bcx, did, ~[level, val], ~[val_datum.ty], expr::Ignore);
             bcx
         }
@@ -384,7 +384,7 @@ fn trans_fail_value(bcx: block,
     let V_str = PointerCast(bcx, V_fail_str, T_ptr(T_i8()));
     let V_filename = PointerCast(bcx, V_filename, T_ptr(T_i8()));
     let args = ~[V_str, V_filename, C_int(ccx, V_line)];
-    let bcx = callee::trans_rtcall_or_lang_call(
+    let bcx = callee::trans_lang_call(
         bcx, bcx.tcx().lang_items.fail_fn(), args, expr::Ignore);
     Unreachable(bcx);
     return bcx;
@@ -401,7 +401,7 @@ pub fn trans_fail_bounds_check(bcx: block, sp: span,
     let filename = PointerCast(bcx, filename_cstr, T_ptr(T_i8()));
 
     let args = ~[filename, line, index, len];
-    let bcx = callee::trans_rtcall_or_lang_call(
+    let bcx = callee::trans_lang_call(
         bcx, bcx.tcx().lang_items.fail_bounds_check_fn(), args, expr::Ignore);
     Unreachable(bcx);
     return bcx;
diff --git a/src/librustc/middle/trans/datum.rs b/src/librustc/middle/trans/datum.rs
index 07499dac62e..c93ab056de0 100644
--- a/src/librustc/middle/trans/datum.rs
+++ b/src/librustc/middle/trans/datum.rs
@@ -544,7 +544,7 @@ pub impl Datum {
 
         // If we need to freeze the box, do that now.
         if root_info.freezes {
-            callee::trans_rtcall_or_lang_call(
+            callee::trans_lang_call(
                 bcx,
                 bcx.tcx().lang_items.borrow_as_imm_fn(),
                 ~[
@@ -566,7 +566,7 @@ pub impl Datum {
             ByRef => Load(bcx, self.val),
         };
 
-        callee::trans_rtcall_or_lang_call(
+        callee::trans_lang_call(
             bcx,
             bcx.tcx().lang_items.check_not_borrowed_fn(),
             ~[ PointerCast(bcx, llval, T_ptr(T_i8())) ],
diff --git a/src/librustc/middle/trans/glue.rs b/src/librustc/middle/trans/glue.rs
index cd3a14b69e7..bcb22022d46 100644
--- a/src/librustc/middle/trans/glue.rs
+++ b/src/librustc/middle/trans/glue.rs
@@ -30,7 +30,7 @@ use core::str;
 
 pub fn trans_free(cx: block, v: ValueRef) -> block {
     let _icx = cx.insn_ctxt("trans_free");
-    callee::trans_rtcall_or_lang_call(
+    callee::trans_lang_call(
         cx,
         cx.tcx().lang_items.free_fn(),
         ~[PointerCast(cx, v, T_ptr(T_i8()))],
@@ -39,7 +39,7 @@ pub fn trans_free(cx: block, v: ValueRef) -> block {
 
 pub fn trans_exchange_free(cx: block, v: ValueRef) -> block {
     let _icx = cx.insn_ctxt("trans_exchange_free");
-    callee::trans_rtcall_or_lang_call(
+    callee::trans_lang_call(
         cx,
         cx.tcx().lang_items.exchange_free_fn(),
         ~[PointerCast(cx, v, T_ptr(T_i8()))],
diff --git a/src/librustc/middle/trans/tvec.rs b/src/librustc/middle/trans/tvec.rs
index df89647321a..dc004c81b11 100644
--- a/src/librustc/middle/trans/tvec.rs
+++ b/src/librustc/middle/trans/tvec.rs
@@ -306,7 +306,7 @@ pub fn trans_uniq_or_managed_vstore(bcx: block,
                     let llsizeval = C_uint(bcx.ccx(), s.len());
                     let typ = ty::mk_estr(bcx.tcx(), ty::vstore_uniq);
                     let lldestval = datum::scratch_datum(bcx, typ, false);
-                    let bcx = callee::trans_rtcall_or_lang_call(
+                    let bcx = callee::trans_lang_call(
                         bcx,
                         bcx.tcx().lang_items.strdup_uniq_fn(),
                         ~[ llptrval, llsizeval ],