R600: Add FetchInst bit to instruction defs to denote vertex/tex instructions

v2[Vincent Lejeune]: Split FetchInst into usesTextureCache/usesVertexCache

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180755 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/R600/AMDGPUSubtarget.cpp b/lib/Target/R600/AMDGPUSubtarget.cpp
index 0f356a1..a7e1d7b 100644
--- a/lib/Target/R600/AMDGPUSubtarget.cpp
+++ b/lib/Target/R600/AMDGPUSubtarget.cpp
@@ -33,6 +33,7 @@
   DefaultSize[0] = 64;
   DefaultSize[1] = 1;
   DefaultSize[2] = 1;
+  HasVertexCache = false;
   ParseSubtargetFeatures(GPU, FS);
   DevName = GPU;
   Device = AMDGPUDeviceInfo::getDeviceFromName(DevName, this, Is64bit);
@@ -53,6 +54,10 @@
   return Is64bit;
 }
 bool
+AMDGPUSubtarget::hasVertexCache() const {
+  return HasVertexCache;
+}
+bool
 AMDGPUSubtarget::isTargetELF() const {
   return false;
 }