Use IntEqClasses to compute connected components of live intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122296 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 6 deletions

diff --git a/include/llvm/CodeGen/LiveInterval.h b/include/llvm/CodeGen/LiveInterval.h
index 72f1624d06..192f07ec56 100644
--- a/include/llvm/CodeGen/LiveInterval.h
+++ b/include/llvm/CodeGen/LiveInterval.h
@@ -21,7 +21,7 @@
 #ifndef LLVM_CODEGEN_LIVEINTERVAL_H
 #define LLVM_CODEGEN_LIVEINTERVAL_H
 
-#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/IntEqClasses.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/AlignOf.h"
 #include "llvm/CodeGen/SlotIndexes.h"
@@ -561,11 +561,7 @@ namespace llvm {
 
   class ConnectedVNInfoEqClasses {
     LiveIntervals &lis_;
-
-    // Map each value number to its equivalence class.
-    // The invariant is that EqClass[x] <= x.
-    // Two values are connected iff EqClass[x] == EqClass[b].
-    SmallVector<unsigned, 8> eqClass_;
+    IntEqClasses eqClass_;
 
     // Note that values a and b are connected.
     void Connect(unsigned a, unsigned b);