Do not promote i32 arguments to i64. This was causing unnecessary sign extension
instructions to be emitted.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150782 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 23d0a6d..616e807 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -2299,10 +2299,7 @@
       Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, LocVT, Arg);
       break;
     case CCValAssign::AExt:
-      if (ValVT == MVT::i32)
-        Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg);
-      else
-        Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg);
+      Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg);
       break;
     }