[llvm-commits] [llvm] r116008 - /llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

[Dan Gohman]

Author: djg
Date: Thu Oct  7 18:36:45 2010
New Revision: 116008

URL: http://llvm.org/viewvc/llvm-project?rev=116008&view=rev
Log:
When merging one use into another, transfer the offsets from
the old use to the new one.

Modified:
    llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp?rev=116008&r1=116007&r2=116008&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp Thu Oct  7 18:36:45 2010
@@ -3035,6 +3035,14 @@
                 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');
                 }