Remove redundant variable.

Tested by adding assert(LoopVectorPreHeader == VecPreheader) on LLVM
test suite and SPECs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223847 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index 3c543530a438d5cf0b94cc60265e3bebcc3383e1..ef52da8e1a33edde44cd4f929ed9159447ca3563 100644 (file)
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -2833,9 +2833,6 @@ void InnerLoopVectorizer::vectorizeLoop() {
     }
 
     // Fix the vector-loop phi.
-    // We created the induction variable so we know that the
-    // preheader is the first entry.
-    BasicBlock *VecPreheader = Induction->getIncomingBlock(0);
 
     // Reductions do not have to start at zero. They can start with
     // any loop invariant values.
@@ -2847,7 +2844,8 @@ void InnerLoopVectorizer::vectorizeLoop() {
       // Make sure to add the reduction stat value only to the
       // first unroll part.
       Value *StartVal = (part == 0) ? VectorStart : Identity;
-      cast<PHINode>(VecRdxPhi[part])->addIncoming(StartVal, VecPreheader);
+      cast<PHINode>(VecRdxPhi[part])->addIncoming(StartVal,
+                                                  LoopVectorPreHeader);
       cast<PHINode>(VecRdxPhi[part])->addIncoming(Val[part],
                                                   LoopVectorBody.back());
     }