FileCheck lower_slice_len.

Author: cjgillot

tests/mir-opt/lower_slice_len.rs

@@ -1,9 +1,10 @@
-// skip-filecheck
-// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 // unit-test: LowerSliceLenCalls
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 
 // EMIT_MIR lower_slice_len.bound.LowerSliceLenCalls.diff
 pub fn bound(index: usize, slice: &[u8]) -> u8 {
+    // CHECK-LABEL: fn bound(
+    // CHECK-NOT: ::len(
     if index < slice.len() {
         slice[index]
     } else {