[PowerPC] Reduce names from Power8Vector to P8Vector

Per Hal Finkel's review, improving typability of some variable names.

llvm-svn: 219514
diff --git a/llvm/lib/Target/PowerPC/PPC.td b/llvm/lib/Target/PowerPC/PPC.td
index f13be4a..46d56a4 100644
--- a/llvm/lib/Target/PowerPC/PPC.td
+++ b/llvm/lib/Target/PowerPC/PPC.td
@@ -104,10 +104,9 @@
 def FeatureVSX       : SubtargetFeature<"vsx","HasVSX", "true",
                                         "Enable VSX instructions",
                                         [FeatureAltivec]>;
-def FeaturePower8Vector : SubtargetFeature<"power8-vector", "HasPower8Vector",
-                                           "true",
-                                           "Enable Power8 vector instructions",
-                                           [FeatureVSX, FeatureAltivec]>;
+def FeatureP8Vector  : SubtargetFeature<"power8-vector", "HasP8Vector", "true",
+                                        "Enable POWER8 vector instructions",
+                                        [FeatureVSX, FeatureAltivec]>;
 
 def DeprecatedMFTB   : SubtargetFeature<"", "DeprecatedMFTB", "true",
                                         "Treat mftb as deprecated">;
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
index 8d00be8..d6b964d 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -94,7 +94,7 @@
   HasSPE = false;
   HasQPX = false;
   HasVSX = false;
-  HasPower8Vector = false;
+  HasP8Vector = false;
   HasFCPSGN = false;
   HasFSQRT = false;
   HasFRE = false;
@@ -158,7 +158,7 @@
   // issues in those instructions can be addressed.
   if (IsLittleEndian) {
     HasVSX = false;
-    HasPower8Vector = false;
+    HasP8Vector = false;
   }
 
   // Determine default ABI.
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
index 8c13537..1df19c3 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -91,7 +91,7 @@
   bool HasSPE;
   bool HasQPX;
   bool HasVSX;
-  bool HasPower8Vector;
+  bool HasP8Vector;
   bool HasFCPSGN;
   bool HasFSQRT;
   bool HasFRE, HasFRES, HasFRSQRTE, HasFRSQRTES;
@@ -216,7 +216,7 @@
   bool hasSPE() const { return HasSPE; }
   bool hasQPX() const { return HasQPX; }
   bool hasVSX() const { return HasVSX; }
-  bool hasPower8Vector() const { return HasPower8Vector; }
+  bool hasP8Vector() const { return HasP8Vector; }
   bool hasMFOCRF() const { return HasMFOCRF; }
   bool hasISEL() const { return HasISEL; }
   bool hasPOPCNTD() const { return HasPOPCNTD; }