Recommit r129383. PreRA scheduler heuristic fixes: VRegCycle, TokenFactor latency.

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

diff --git a/lib/CodeGen/ScheduleDAGEmit.cpp b/lib/CodeGen/ScheduleDAGEmit.cpp
index 0a2fb3796a4239d65d766a8b094bff42b96238ce..6b7a8c6491bd1b699e067bfe45ffdd9adac8441d 100644 (file)
--- a/lib/CodeGen/ScheduleDAGEmit.cpp
+++ b/lib/CodeGen/ScheduleDAGEmit.cpp
@@ -57,7 +57,7 @@ void ScheduleDAG::EmitPhysRegCopy(SUnit *SU,
       assert(I->getReg() && "Unknown physical register!");
       unsigned VRBase = MRI.createVirtualRegister(SU->CopyDstRC);
       bool isNew = VRBaseMap.insert(std::make_pair(SU, VRBase)).second;
-      isNew = isNew; // Silence compiler warning.
+      (void)isNew; // Silence compiler warning.
       assert(isNew && "Node emitted out of order - early");
       BuildMI(*BB, InsertPos, DebugLoc(), TII->get(TargetOpcode::COPY), VRBase)
         .addReg(I->getReg());