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.

llvm-svn: 131133

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SplitKit.cpp b/llvm/lib/CodeGen/SplitKit.cpp
index 739ba36..55ae97c 100644
--- a/llvm/lib/CodeGen/SplitKit.cpp
+++ b/llvm/lib/CodeGen/SplitKit.cpp
@@ -32,6 +32,7 @@ STATISTIC(NumFinished, "Number of splits finished");
 STATISTIC(NumSimple,   "Number of splits that were simple");
 STATISTIC(NumCopies,   "Number of copies inserted for splitting");
 STATISTIC(NumRemats,   "Number of rematerialized defs for splitting");
+STATISTIC(NumRepairs,  "Number of invalid live ranges repaired");
 
 //===----------------------------------------------------------------------===//
 //                                 Split Analysis
@@ -123,6 +124,7 @@ void SplitAnalysis::analyzeUses() {
     // FIXME: calcLiveBlockInfo found inconsistencies in the live range.
     // I am looking at you, SimpleRegisterCoalescing!
     DidRepairRange = true;
+    ++NumRepairs;
     DEBUG(dbgs() << "*** Fixing inconsistent live interval! ***\n");
     const_cast<LiveIntervals&>(LIS)
       .shrinkToUses(const_cast<LiveInterval*>(CurLI));