Add VSUB{S,D} instructions to the integrated ARM assembler.

src/IceAssemblerARM32.h

Index: src/IceAssemblerARM32.h
diff --git a/src/IceAssemblerARM32.h b/src/IceAssemblerARM32.h
index e11b6c97664fadda5cbf83471c98420a79844d17..cdaa678185f096cdc676b51b5c2c826214ba4f32 100644
--- a/src/IceAssemblerARM32.h
+++ b/src/IceAssemblerARM32.h
@@ -330,6 +330,12 @@ public:
   void vpush(const Variable *OpBaseReg, SizeT NumConsecRegs,
              CondARM32::Cond Cond);
 
+  void vsubd(const Operand *OpDd, const Operand *OpDn, const Operand *OpDm,
+             CondARM32::Cond Cond);
+
+  void vsubs(const Operand *OpSd, const Operand *OpSn, const Operand *OpSm,
+             CondARM32::Cond Cond);
+
   static bool classof(const Assembler *Asm) {
     return Asm->getKind() == Asm_ARM32;
   }