[PATCH] Add NVPTXPeephole pass to reduce unnecessary address cast

[Xuetian Weng]

================
Comment at: lib/Target/NVPTX/NVPTXPeephole.cpp:89
@@ +88,3 @@
+  auto &BaseAddrOp = GenericAddrDef->getOperand(1);
+  if (BaseAddrOp.getType() == MachineOperand::MO_FrameIndex) {
+    return true;
----------------
jingyue wrote:
> wengxt wrote:
> > jingyue wrote:
> > > Could there be multiple frame indices? `fi#0`, `fi#1`, ...
> > Fixed
> Did you miss uploading something? I didn't see anything's changed. 
Related change is in CombineCVTAToLocal

http://reviews.llvm.org/D10549

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