[llvm] r328333 - [Hexagon] Copy subregisters in HexagonStoreWiden

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Fri Mar 23 10:22:55 2018
New Revision: 328333

URL: http://llvm.org/viewvc/llvm-project?rev=328333&view=rev
Log:
[Hexagon] Copy subregisters in HexagonStoreWiden

When converting an instruction to the wider version, copy any
subregisters if the original operand has a subregister.

Patch by Brendon Cahoon.

Modified:
    llvm/trunk/lib/Target/Hexagon/HexagonStoreWidening.cpp

Modified: llvm/trunk/lib/Target/Hexagon/HexagonStoreWidening.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonStoreWidening.cpp?rev=328333&r1=328332&r2=328333&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonStoreWidening.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonStoreWidening.cpp Fri Mar 23 10:22:55 2018
@@ -433,10 +433,11 @@ bool HexagonStoreWidening::createWideSto
     const MCInstrDesc &StD = TII->get(WOpc);
     MachineOperand &MR = FirstSt->getOperand(0);
     int64_t Off = FirstSt->getOperand(1).getImm();
-    MachineInstr *StI = BuildMI(*MF, DL, StD)
-                          .addReg(MR.getReg(), getKillRegState(MR.isKill()))
-                          .addImm(Off)
-                          .addImm(Val);
+    MachineInstr *StI =
+        BuildMI(*MF, DL, StD)
+            .addReg(MR.getReg(), getKillRegState(MR.isKill()), MR.getSubReg())
+            .addImm(Off)
+            .addImm(Val);
     StI->addMemOperand(*MF, NewM);
     NG.push_back(StI);
   } else {
@@ -455,10 +456,11 @@ bool HexagonStoreWidening::createWideSto
     const MCInstrDesc &StD = TII->get(WOpc);
     MachineOperand &MR = FirstSt->getOperand(0);
     int64_t Off = FirstSt->getOperand(1).getImm();
-    MachineInstr *StI = BuildMI(*MF, DL, StD)
-                          .addReg(MR.getReg(), getKillRegState(MR.isKill()))
-                          .addImm(Off)
-                          .addReg(VReg, RegState::Kill);
+    MachineInstr *StI =
+        BuildMI(*MF, DL, StD)
+            .addReg(MR.getReg(), getKillRegState(MR.isKill()), MR.getSubReg())
+            .addImm(Off)
+            .addReg(VReg, RegState::Kill);
     StI->addMemOperand(*MF, NewM);
     NG.push_back(StI);
   }