[PATCH] D43781: Make AddrSpaceCast noops on PPC

[Valentin Churavy via Phabricator via llvm-commits]

vchuravy created this revision.
Herald added subscribers: llvm-commits, kbarton, kristof.beyls, nemanjai.

PPC as AArch64 doesn't have address-spaces so we can drop them in the backend


Repository:
  rL LLVM

https://reviews.llvm.org/D43781

Files:
  lib/Target/PowerPC/PPCISelLowering.h


Index: lib/Target/PowerPC/PPCISelLowering.h
===================================================================
--- lib/Target/PowerPC/PPCISelLowering.h
+++ lib/Target/PowerPC/PPCISelLowering.h
@@ -884,6 +884,11 @@
       }
     };
 
+    bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
+      // Addrspacecasts are always noops.
+      return true;
+    }
+
     bool canReuseLoadAddress(SDValue Op, EVT MemVT, ReuseLoadInfo &RLI,
                              SelectionDAG &DAG,
                              ISD::LoadExtType ET = ISD::NON_EXTLOAD) const;


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