diff options
| -rw-r--r-- | lib/hipe/llvm/hipe_rtl_to_llvm.erl | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/hipe/llvm/hipe_rtl_to_llvm.erl b/lib/hipe/llvm/hipe_rtl_to_llvm.erl index 66b2e10fb8..46201cb2ef 100644 --- a/lib/hipe/llvm/hipe_rtl_to_llvm.erl +++ b/lib/hipe/llvm/hipe_rtl_to_llvm.erl @@ -1496,16 +1496,18 @@ seperate_relocs([R|Rs], CallAcc, AtomAcc, ClosureAcc, LabelAcc, JmpTableAcc) -> %% @doc External declaration of an atom. declare_atom({AtomName, _}) -> - WordTy = hipe_llvm:mk_int(?WORD_WIDTH), - hipe_llvm:mk_const_decl("@" ++ AtomName, "external constant", WordTy, ""). + %% The type has to be byte, or a backend might assume the constant is aligned + %% and incorrectly optimise away type tests + ByteTy = hipe_llvm:mk_int(8), + hipe_llvm:mk_const_decl("@" ++ AtomName, "external constant", ByteTy, ""). %% @doc Creation of local variable for an atom. load_atom({AtomName, _}) -> Dst = "%" ++ AtomName ++ "_var", Name = "@" ++ AtomName, WordTy = hipe_llvm:mk_int(?WORD_WIDTH), - WordTyPtr = hipe_llvm:mk_pointer(WordTy), - hipe_llvm:mk_conversion(Dst, ptrtoint, WordTyPtr, Name, WordTy). + ByteTyPtr = hipe_llvm:mk_pointer(hipe_llvm:mk_int(8)), + hipe_llvm:mk_conversion(Dst, ptrtoint, ByteTyPtr, Name, WordTy). %% @doc External declaration of a closure. declare_closure({ClosureName, _})-> |