Fix PR9883. Make sure all caches are invalidated when a live range is repaired.
The previous invalidation missed the alias interference caches.
Also add a stats counter for the number of repaired ranges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131133 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocBase.h b/lib/CodeGen/RegAllocBase.h
index f431d5a..b25ea23 100644
--- a/lib/CodeGen/RegAllocBase.h
+++ b/lib/CodeGen/RegAllocBase.h
@@ -113,6 +113,10 @@
return Queries[PhysReg];
}
+ // Invalidate all cached information about virtual registers - live ranges may
+ // have changed.
+ void invalidateVirtRegs() { ++UserTag; }
+
// The top-level driver. The output is a VirtRegMap that us updated with
// physical register assignments.
//