Segfault with @noinline + isbits branch

[johnmyleswhite]

julia> @noinline throw_error() = error()
throw_error (generic function with 1 method)

julia> for f in (:(Base.(:+)), )
           @eval begin
               @inline function $(f){S}(x::Nullable{S})
                   if isbits(S)
                       Nullable($(f)(x.value), x.isnull)
                   else
                       throw_error()
                   end
               end
           end
       end

julia> +Nullable(1)

signal (11): Segmentation fault: 11
_ZN4llvm8LoadInstC2EPNS_5ValueEPKcbPNS_11InstructionE at /Users/johnmyleswhite/julia-0.4/usr/lib/libjulia.dylib (unknown line)
_ZNK4llvm9IRBuilderILb1ENS_14ConstantFolderENS_24IRBuilderDefaultInserterILb1EEEE6InsertINS_8LoadInstEEEPT_S8_RKNS_5TwineE at /Users/johnmyleswhite/julia-0.4/usr/include/llvm/IR/IRBuilder.h:453
_ZL13emit_functionP17_jl_lambda_info_t at /Users/johnmyleswhite/julia-0.4/src/codegen.cpp:4692
_Z19jl_eh_restore_stateP13_jl_handler_t at /Users/johnmyleswhite/julia-0.4/src/./julia.h:1346
jl_compile at /Users/johnmyleswhite/julia-0.4/src/codegen.cpp:903
jl_trampoline_compile_function at /Users/johnmyleswhite/julia-0.4/src/builtins.c:963
jl_apply at /Users/johnmyleswhite/julia-0.4/src/./julia.h:1260
jl_apply at /Users/johnmyleswhite/julia-0.4/src/gf.c:1639
jl_apply at /Users/johnmyleswhite/julia-0.4/src/interpreter.c:55
eval at /Users/johnmyleswhite/julia-0.4/src/interpreter.c:212
jl_toplevel_eval_flex at /Users/johnmyleswhite/julia-0.4/src/toplevel.c:517
jl_toplevel_eval_in at /Users/johnmyleswhite/julia-0.4/src/builtins.c:548
eval_user_input at REPL.jl:62
jlcall_eval_user_input_21539 at  (unknown line)
anonymous at task.jl:91
jl_apply at /Users/johnmyleswhite/julia-0.4/src/task.c:233
Segmentation fault: 11