Fix PR10949. Fix the encoding of VMOVPQIto64rr.

[oota-llvm.git] / lib / CodeGen / ProcessImplicitDefs.cpp

diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp
index c04d65637c94ad5ff12e6bd6fb76e2e2cc10dab1..b1d8c9760225cec86649d477601eada709acf5e8 100644 (file)
--- a/lib/CodeGen/ProcessImplicitDefs.cpp
+++ b/lib/CodeGen/ProcessImplicitDefs.cpp
@@ -125,8 +125,14 @@ bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &fn) {
             LiveVariables::VarInfo& vi = LV->getVarInfo(MO.getReg());
             vi.removeKill(MI);
           }
+          unsigned Reg = MI->getOperand(0).getReg();
           MI->eraseFromParent();
           Changed = true;
+
+          // A REG_SEQUENCE may have been expanded into partial definitions.
+          // If this was the last one, mark Reg as implicitly defined.
+          if (TargetRegisterInfo::isVirtualRegister(Reg) && MRI->def_empty(Reg))
+            ImpDefRegs.insert(Reg);
           continue;
         }
       }