tcg-opc.h: Simplify insn_start def

We already have a TLADDR_ARGS definition, so rearrange the order
slightly and use it in the definition of insn_start, instead of
having an #ifdef.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <1443788657-14537-2-git-send-email-james.hogan@imgtec.com>

tcg/tcg-opc.h

@@ -173,18 +173,15 @@ DEF(muls2_i64, 2, 2, 0, IMPL64 | IMPL(TCG_TARGET_HAS_muls2_i64))
 DEF(muluh_i64, 1, 2, 0, IMPL(TCG_TARGET_HAS_muluh_i64))
 DEF(mulsh_i64, 1, 2, 0, IMPL(TCG_TARGET_HAS_mulsh_i64))
 
+#define TLADDR_ARGS  (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? 1 : 2)
+#define DATA64_ARGS  (TCG_TARGET_REG_BITS == 64 ? 1 : 2)
+
 /* QEMU specific */
-#if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
-DEF(insn_start, 0, 0, 2 * TARGET_INSN_START_WORDS, TCG_OPF_NOT_PRESENT)
-#else
-DEF(insn_start, 0, 0, TARGET_INSN_START_WORDS, TCG_OPF_NOT_PRESENT)
-#endif
+DEF(insn_start, 0, 0, TLADDR_ARGS * TARGET_INSN_START_WORDS,
+    TCG_OPF_NOT_PRESENT)
 DEF(exit_tb, 0, 0, 1, TCG_OPF_BB_END)
 DEF(goto_tb, 0, 0, 1, TCG_OPF_BB_END)
 
-#define TLADDR_ARGS    (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? 1 : 2)
-#define DATA64_ARGS  (TCG_TARGET_REG_BITS == 64 ? 1 : 2)
-
 DEF(qemu_ld_i32, 1, TLADDR_ARGS, 1,
     TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS)
 DEF(qemu_st_i32, 0, TLADDR_ARGS + 1, 1,