2 files changed, 16 insertions, 10 deletions
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 20141f7f8d6..c852c2e1564 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -3892,9 +3892,14 @@ void SwingSchedulerDAG::fixupRegisterOverlaps(std::deque<SUnit *> &Instrs) {
           unsigned BasePos, OffsetPos;
           // Update the base register and adjust the offset.
           if (TII->getBaseAndOffsetPosition(*MI, BasePos, OffsetPos)) {
-            MI->getOperand(BasePos).setReg(NewBaseReg);
-            int64_t Offset = MI->getOperand(OffsetPos).getImm();
-            MI->getOperand(OffsetPos).setImm(Offset - It->second.second);
+            MachineInstr *NewMI = MF.CloneMachineInstr(MI);
+            NewMI->getOperand(BasePos).setReg(NewBaseReg);
+            int64_t NewOffset =
+                MI->getOperand(OffsetPos).getImm() - It->second.second;
+            NewMI->getOperand(OffsetPos).setImm(NewOffset);
+            SU->setInstr(NewMI);
+            MISUnitMap[NewMI] = SU;
+            NewMIs.insert(NewMI);
           }
         }
         OverlapReg = 0;
diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
index c2125bec3a5..5e2cfbd531a 100644
--- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
@@ -1651,13 +1651,14 @@ bool HexagonInstrInfo::areMemAccessesTriviallyDisjoint(
 bool HexagonInstrInfo::getIncrementValue(const MachineInstr &MI,
       int &Value) const {
   if (isPostIncrement(MI)) {
-    // For a post-increment, the offset is zero and the increment value is
-    // determined by the instruction's access size.
-    int Zero;
-    unsigned AccessSize;
-    bool RetVal = getBaseAndOffset(MI, Zero, AccessSize);
-    Value = (int) AccessSize;
-    return RetVal;
+    unsigned BasePos = 0, OffsetPos = 0;
+    if (!getBaseAndOffsetPosition(MI, BasePos, OffsetPos))
+      return false;
+    const MachineOperand &OffsetOp = MI.getOperand(OffsetPos);
+    if (OffsetOp.isImm()) {
+      Value = OffsetOp.getImm();
+      return true;
+    }
   }
   if (MI.getOpcode() == Hexagon::A2_addi) {
     Value = MI.getOperand(2).getImm();