Fix an obvious mistake: don't change the operands until all of them have been

checked and it is safe to proceed with the changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105304 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 3f7a610fd004eca8362788ac406d2a9cd7d9cc10..f61dbc95d1a82782ff4aed38cbb315176ee6bdca 100644 (file)
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -1200,8 +1200,6 @@ TwoAddressInstructionPass::CoalesceExtSubRegs(SmallVector<unsigned,4> &Srcs,
             Proceed = false;
             break;
           }
-          MO.setReg(DstReg);
-          MO.setSubReg(NewSubIdx);
         }
       if (Proceed)
         for (MachineRegisterInfo::reg_iterator RI = MRI->reg_begin(SrcReg),