target-tricore: Move general CHECK_REG_PAIR of decode_rrr_divide

The add.f and sub.f to be implemented don't use 64 bit registers
and a general usage of CHECK_REG_PAIR would always generate an
exception for them.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <1457708597-3025-3-git-send-email-kbastian@mail.uni-paderborn.de>

target-tricore/translate.c

@@ -7013,45 +7013,51 @@ static void decode_rrr_divide(CPUTriCoreState *env, DisasContext *ctx)
     r3 = MASK_OP_RRR_S3(ctx->opcode);
     r4 = MASK_OP_RRR_D(ctx->opcode);
 
-    CHECK_REG_PAIR(r3);
-
     switch (op2) {
     case OPC2_32_RRR_DVADJ:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(dvadj, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_DVSTEP:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(dvstep, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_DVSTEP_U:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(dvstep_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_IXMAX:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(ixmax, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_IXMAX_U:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(ixmax_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_IXMIN:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(ixmin, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_IXMIN_U:
+        CHECK_REG_PAIR(r3);
         CHECK_REG_PAIR(r4);
         GEN_HELPER_RRR(ixmin_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
                        cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
         break;
     case OPC2_32_RRR_PACK:
+        CHECK_REG_PAIR(r3);
         gen_helper_pack(cpu_gpr_d[r4], cpu_PSW_C, cpu_gpr_d[r3],
                         cpu_gpr_d[r3+1], cpu_gpr_d[r1]);
         break;