[SimpleLoopUnswitch] Increment stats counter for unswitching switch instruction

syzaara · syzaara · commit b7dff9c9af26 · 2019-01-15T15:08:01.000Z
Increment statistics counter NumSwitches at unswitchNontrivialInvariants() for unswitching a non-trivial switch instruction. This is to fix a bug that it increments NumBranches even for the case of switch instruction. There is no functional change in this patch. Differential Revision: https://reviews.llvm.org/D56408 llvm-svn: 351193
diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -2281,7 +2281,10 @@ static void unswitchNontrivialInvariants(
   if (MSSAU && VerifyMemorySSA)
     MSSAU->getMemorySSA()->verifyMemorySSA();
 
-  ++NumBranches;
+  if (BI)
+    ++NumBranches;
+  else
+    ++NumSwitches;
 }
 
 /// Recursively compute the cost of a dominator subtree based on the per-block
