X86TTI: Adjust sdiv cost now that we can lower it on plain SSE2.

Includes a fix for a horrible typo that caused all SDIV costs to be
slightly off :)

llvm-svn: 207371
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index 47ee2b0..9784324 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -1327,7 +1327,7 @@
   case Mul:            return ISD::MUL;
   case FMul:           return ISD::FMUL;
   case UDiv:           return ISD::UDIV;
-  case SDiv:           return ISD::UDIV;
+  case SDiv:           return ISD::SDIV;
   case FDiv:           return ISD::FDIV;
   case URem:           return ISD::UREM;
   case SRem:           return ISD::SREM;