This appears to fix Bug 172 and does not break any other feature tests or
regression tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10388 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/InstrSelection/InstrSelectionSupport.cpp b/lib/CodeGen/InstrSelection/InstrSelectionSupport.cpp
index 44a4359..73e5480 100644
--- a/lib/CodeGen/InstrSelection/InstrSelectionSupport.cpp
+++ b/lib/CodeGen/InstrSelection/InstrSelectionSupport.cpp
@@ -167,6 +167,12 @@
             constantThatMustBeLoaded = true;
         }
       } else {
+        //
+        // If the operand is from the constant pool, don't try to change it.
+        //
+        if (mop.getType() == MachineOperand::MO_ConstantPoolIndex) {
+          continue;
+        }
         assert(mop.isImmediate());
         bool isSigned = mop.getType() == MachineOperand::MO_SignExtendedImmed;