From: Dan Gohman <gohman@apple.com>
Date: Thu, 7 Oct 2010 23:36:45 +0000 (+0000)
Subject: When merging one use into another, transfer the offsets from
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=dd3db0e0c33958328cc709f01aba45c8d9e57f1f;p=oota-llvm.git

When merging one use into another, transfer the offsets from
the old use to the new one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116008 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 07477661f9a..f54bf63de22 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -3035,6 +3035,14 @@ void LSRInstance::NarrowSearchSpaceByCollapsingUnrolledCode() {
                 if (Fixup.LUIdx == LUIdx) {
                   Fixup.LUIdx = LUThatHas - &Uses.front();
                   Fixup.Offset += F.AM.BaseOffs;
+                  // Add the new offset to LUThatHas' offset list.
+                  if (LUThatHas->Offsets.back() != Fixup.Offset) {
+                    LUThatHas->Offsets.push_back(Fixup.Offset);
+                    if (Fixup.Offset > LUThatHas->MaxOffset)
+                      LUThatHas->MaxOffset = Fixup.Offset;
+                    if (Fixup.Offset < LUThatHas->MinOffset)
+                      LUThatHas->MinOffset = Fixup.Offset;
+                  }
                   DEBUG(dbgs() << "New fixup has offset "
                                << Fixup.Offset << '\n');
                 }