target/mips: msa: Simplify and move helper for MOVE.V

Achieves clearer code and slightly better performance.
Signed-off-by: NAleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: NAleksandar Rikalo <arikalo@wavecomp.com>
Message-Id: <1569415572-19635-20-git-send-email-aleksandar.markovic@rt-rk.com>

target/mips/helper.h

@@ -887,6 +887,7 @@ DEF_HELPER_4(msa_mod_s_h, void, env, i32, i32, i32)
 DEF_HELPER_4(msa_mod_s_w, void, env, i32, i32, i32)
 DEF_HELPER_4(msa_mod_s_d, void, env, i32, i32, i32)
 
+DEF_HELPER_3(msa_move_v, void, env, i32, i32)
 
 DEF_HELPER_4(msa_andi_b, void, env, i32, i32, i32)
 DEF_HELPER_4(msa_ori_b, void, env, i32, i32, i32)
@@ -977,7 +978,6 @@ DEF_HELPER_5(msa_splati_df, void, env, i32, i32, i32, i32)
 DEF_HELPER_5(msa_insve_df, void, env, i32, i32, i32, i32)
 DEF_HELPER_3(msa_ctcmsa, void, env, tl, i32)
 DEF_HELPER_2(msa_cfcmsa, tl, env, i32)
-DEF_HELPER_3(msa_move_v, void, env, i32, i32)
 
 DEF_HELPER_5(msa_fcaf_df, void, env, i32, i32, i32, i32)
 DEF_HELPER_5(msa_fcun_df, void, env, i32, i32, i32, i32)

target/mips/msa_helper.c

@@ -2022,7 +2022,19 @@ void helper_msa_mod_u_d(CPUMIPSState *env,
  * +---------------+----------------------------------------------------------+
  */
 
-/* TODO: insert Move group helpers here */
+static inline void msa_move_v(wr_t *pwd, wr_t *pws)
+{
+    pwd->d[0] = pws->d[0];
+    pwd->d[1] = pws->d[1];
+}
+
+void helper_msa_move_v(CPUMIPSState *env, uint32_t wd, uint32_t ws)
+{
+    wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
+    wr_t *pws = &(env->active_fpu.fpr[ws].wr);
+
+    msa_move_v(pwd, pws);
+}
 
 
 /*
@@ -2079,15 +2091,6 @@ void helper_msa_mod_u_d(CPUMIPSState *env,
 /* TODO: insert Shift group helpers here */
 
 
-static inline void msa_move_v(wr_t *pwd, wr_t *pws)
-{
-    uint32_t i;
-
-    for (i = 0; i < DF_ELEMENTS(DF_DOUBLE); i++) {
-        pwd->d[i] = pws->d[i];
-    }
-}
-
 #define MSA_FN_IMM8(FUNC, DEST, OPERATION)                              \
 void helper_msa_ ## FUNC(CPUMIPSState *env, uint32_t wd, uint32_t ws,   \
         uint32_t i8)                                                    \
@@ -3874,14 +3877,6 @@ target_ulong helper_msa_cfcmsa(CPUMIPSState *env, uint32_t cs)
     return 0;
 }
 
-void helper_msa_move_v(CPUMIPSState *env, uint32_t wd, uint32_t ws)
-{
-    wr_t *pwd = &(env->active_fpu.fpr[wd].wr);
-    wr_t *pws = &(env->active_fpu.fpr[ws].wr);
-
-    msa_move_v(pwd, pws);
-}
-
 void helper_msa_fill_df(CPUMIPSState *env, uint32_t df, uint32_t wd,
                         uint32_t rs)
 {