Implement the PowerPC system call (sc) instruction.

Instruction added at request of Roman Divacky.  Tested via asm-parser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181821 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index f6972bd..eee2bb8 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -666,6 +666,7 @@
   case PPCISD::ADDIS_DTPREL_HA: return "PPCISD::ADDIS_DTPREL_HA";
   case PPCISD::ADDI_DTPREL_L:   return "PPCISD::ADDI_DTPREL_L";
   case PPCISD::VADD_SPLAT:      return "PPCISD::VADD_SPLAT";
+  case PPCISD::SC:              return "PPCISD::SC";
   }
 }