Add VSUB vector instruction to the integrated ARM assembler.

src/IceAssemblerARM32.h

Index: src/IceAssemblerARM32.h
diff --git a/src/IceAssemblerARM32.h b/src/IceAssemblerARM32.h
index 2b34178edcf3ecbcd6d56fbe14265b30d955f978..488f84ed48170aeac2ced5144eef03d10daedf64 100644
--- a/src/IceAssemblerARM32.h
+++ b/src/IceAssemblerARM32.h
@@ -461,6 +461,13 @@ public:
   void vsubd(const Operand *OpDd, const Operand *OpDn, const Operand *OpDm,
              CondARM32::Cond Cond);
 
+  // Integer vector subtract.
+  void vsubqi(Type ElmtTy, const Operand *OpQd, const Operand *OpQm,
+              const Operand *OpQn);
+
+  // Float vector subtract
+  void vsubqf(const Operand *OpQd, const Operand *OpQm, const Operand *OpQn);
+
   void vsubs(const Operand *OpSd, const Operand *OpSn, const Operand *OpSm,
              CondARM32::Cond Cond);