[RISCV][GlobalISel] Remove unused variable 'Index' (NFC)

/data/llvm-project/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp:272:12: error: variable 'Index' set but not used [-Werror,-Wunused-but-set-variable]
  unsigned Index = 0;
           ^
1 error generated.

diff --git a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
index f838937..5505f89 100644 (file)
--- a/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVCallLowering.cpp
@@ -269,14 +269,11 @@ bool RISCVCallLowering::lowerCall(MachineIRBuilder &MIRBuilder,
 
   SmallVector<ArgInfo, 32> SplitArgInfos;
   SmallVector<ISD::OutputArg, 8> Outs;
-  unsigned Index = 0;
   for (auto &AInfo : Info.OrigArgs) {
     // Handle any required unmerging of split value types from a given VReg into
     // physical registers. ArgInfo objects are constructed correspondingly and
     // appended to SplitArgInfos.
     splitToValueTypes(AInfo, SplitArgInfos, DL, CC);
-
-    ++Index;
   }
 
   // TODO: Support tail calls.