Add issue reference to fixmes

Author: bjorn3

src/cast.rs

@@ -103,7 +103,7 @@ pub(crate) fn clif_int_or_float_cast(
                     vec![AbiParam::new(types::I64X2)],
                     &[from],
                 )[0];
-                // FIXME use bitcast instead of store to get from i64x2 to i128
+                // FIXME(bytecodealliance/wasmtime#6104) use bitcast instead of store to get from i64x2 to i128
                 let stack_slot = fx.bcx.create_sized_stack_slot(StackSlotData {
                     kind: StackSlotKind::ExplicitSlot,
                     size: 16,

src/codegen_i128.rs

@@ -53,7 +53,7 @@ pub(crate) fn maybe_codegen<'tcx>(
                     vec![AbiParam::new(types::I64X2)],
                     &args,
                 )[0];
-                // FIXME use bitcast instead of store to get from i64x2 to i128
+                // FIXME(bytecodealliance/wasmtime#6104) use bitcast instead of store to get from i64x2 to i128
                 let ret_place = CPlace::new_stack_slot(fx, lhs.layout());
                 ret_place.to_ptr().store(fx, ret, MemFlags::trusted());
                 Some(ret_place.to_cvalue(fx))

src/value_and_place.rs

@@ -517,7 +517,7 @@ impl<'tcx> CPlace<'tcx> {
                 | (types::F64, types::I64) => codegen_bitcast(fx, dst_ty, data),
                 _ if src_ty.is_vector() && dst_ty.is_vector() => codegen_bitcast(fx, dst_ty, data),
                 _ if src_ty.is_vector() || dst_ty.is_vector() => {
-                    // FIXME do something more efficient for transmutes between vectors and integers.
+                    // FIXME(bytecodealliance/wasmtime#6104) do something more efficient for transmutes between vectors and integers.
                     let stack_slot = fx.bcx.create_sized_stack_slot(StackSlotData {
                         kind: StackSlotKind::ExplicitSlot,
                         // FIXME Don't force the size to a multiple of 16 bytes once Cranelift gets a way to