// Calling convention used on Win64
def CC_X86_Win64_C : CallingConv<[
// FIXME: Handle byval stuff.
- // FIXME: Handle fp80.
// FIXME: Handle varargs.
// Promote i8/i16 arguments to i32.
// 16-byte aligned if there are no more registers to hold them.
CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 16>>,
+ // Long doubles get stack slots whose size and alignment depends on the
+ // subtarget.
+ CCIfType<[f80], CCAssignToStack<0, 0>>,
+
// Vectors get 16-byte stack slots that are 16-byte aligned.
CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>,