[AMDGPU] Initialize a couple more Subtarget fields

This is just for consistency. The fields are never actually used
so it is NFC.

diff --git a/llvm/lib/Target/AMDGPU/GCNSubtarget.h b/llvm/lib/Target/AMDGPU/GCNSubtarget.h
index 633c199..7b4e445 100644 (file)
--- a/llvm/lib/Target/AMDGPU/GCNSubtarget.h
+++ b/llvm/lib/Target/AMDGPU/GCNSubtarget.h
@@ -96,8 +96,8 @@ protected:
 
   // Subtarget statically properties set by tablegen
   bool FP64 = false;
-  bool FMA;
-  bool MIMG_R128;
+  bool FMA = false;
+  bool MIMG_R128 = false;
   bool CIInsts = false;
   bool GFX8Insts = false;
   bool GFX9Insts = false;