add explicit revisions to check-pass tests

Author: lqd

tests/ui/nll/polonius/assignment-kills-loans.rs

@@ -4,8 +4,11 @@
 // facts only on simple assignments, but not projections, incorrectly causing errors to be emitted
 // for code accepted by NLL. They are all variations from example code in the NLL RFC.
 
+//@ ignore-compare-mode-polonius (explicit revisions)
+//@ revisions: polonius_next polonius
 //@ check-pass
-//@ compile-flags: -Z polonius
+//@ [polonius_next] compile-flags: -Z polonius=next
+//@ [polonius] compile-flags: -Z polonius
 
 struct List<T> {
     value: T,

tests/ui/nll/polonius/call-kills-loans.rs

@@ -4,8 +4,11 @@
 // by NLL but was incorrectly rejected by Polonius because of these
 // missing `killed` facts.
 
+//@ ignore-compare-mode-polonius (explicit revisions)
+//@ revisions: polonius_next polonius
 //@ check-pass
-//@ compile-flags: -Z polonius
+//@ [polonius_next] compile-flags: -Z polonius=next
+//@ [polonius] compile-flags: -Z polonius
 
 struct Thing;
 

tests/ui/nll/polonius/location-insensitive-scopes-liveness.rs

@@ -5,9 +5,11 @@
 // than `liveness::trace`, on some specific CFGs shapes: a variable was dead during tracing but its
 // regions were marked live later, and live loans were not recomputed at this point.
 
+//@ ignore-compare-mode-polonius (explicit revisions)
+//@ revisions: polonius_next polonius
 //@ check-pass
-//@ revisions: nll polonius
-//@ [polonius] compile-flags: -Zpolonius=next
+//@ [polonius_next] compile-flags: -Z polonius=next
+//@ [polonius] compile-flags: -Z polonius
 
 // minimized from wavefc-cli-3.0.0
 fn repro1() {

tests/ui/nll/polonius/storagedead-kills-loans.rs

@@ -3,8 +3,11 @@
 // is correctly accepted by NLL but was incorrectly rejected by
 // Polonius because of these missing `killed` facts.
 
+//@ ignore-compare-mode-polonius (explicit revisions)
+//@ revisions: polonius_next polonius
 //@ check-pass
-//@ compile-flags: -Z polonius
+//@ [polonius_next] compile-flags: -Z polonius=next
+//@ [polonius] compile-flags: -Z polonius
 
 use std::{io, mem};
 use std::io::Read;