commit a018540807775703d630e9c92f9d8013d545599e
author Owen Anderson <resistor@mac.com> Thu Nov 08 01:20:48 2007 +0000
committer Owen Anderson <resistor@mac.com> Thu Nov 08 01:20:48 2007 +0000
tree 9f30b3ba2b3985dd0d498b40311128422cb9471f
parent 43b665db50292420ff310f9050da9c28e48d252c

Bring UsedBlocks back.  StrongPHIElimination needs this information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43866 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/TwoAddressInstructionPass.cpp

diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 277257b..b8d38dc 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -202,6 +202,10 @@
           LiveVariables::VarInfo& varInfo = LV.getVarInfo(regA);
           varInfo.DefInst = prevMi;
 
+          // update live variables for regB
+          LiveVariables::VarInfo& varInfoB = LV.getVarInfo(regB);
+          // regB is used in this BB.
+          varInfoB.UsedBlocks[mbbi->getNumber()] = true;
           if (LV.removeVirtualRegisterKilled(regB, mbbi, mi))
             LV.addVirtualRegisterKilled(regB, prevMi);