Fixes bug found in Real Register Assignment (#4572)

Fixes bug found in Real Register Assignment
eclipse-openj9 · Nov 18, 2019 · 856c126 · 856c126
2 parents 3a98b5d + a12a2d0
commit 856c126
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/compiler/z/codegen/OMRMachine.cpp b/compiler/z/codegen/OMRMachine.cpp
@@ -991,6 +991,7 @@ OMR::Z::Machine::assignBestRegisterSingle(TR::Register    *targetRegister,
          // find a new register to shuffle to
          TR::RealRegister * newAssignedRegister = self()->findBestRegisterForShuffle(currInst, targetRegister, availRegMask);
          TR::Instruction *cursor = self()->registerCopy(self()->cg(), kindOfRegister, toRealRegister(assignedRegister), newAssignedRegister, appendInst);
+         targetRegister->setAssignedRegister(newAssignedRegister);
          newAssignedRegister->setAssignedRegister(targetRegister);
          newAssignedRegister->setState(TR::RealRegister::Assigned);
          assignedRegister->setAssignedRegister(NULL);