diff --git a/tcg/tcg-op-gvec.c b/tcg/tcg-op-gvec.c
index 3707c0effb..8ecaf4d67e 100644
--- a/tcg/tcg-op-gvec.c
+++ b/tcg/tcg-op-gvec.c
@@ -96,7 +96,7 @@ void tcg_gen_gvec_2_ool(uint32_t dofs, uint32_t aofs,
                         gen_helper_gvec_2 *fn)
 {
     TCGv_ptr a0, a1;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -108,7 +108,6 @@ void tcg_gen_gvec_2_ool(uint32_t dofs, uint32_t aofs,
 
     tcg_temp_free_ptr(a0);
     tcg_temp_free_ptr(a1);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with two vector operands
@@ -118,7 +117,7 @@ void tcg_gen_gvec_2i_ool(uint32_t dofs, uint32_t aofs, TCGv_i64 c,
                          gen_helper_gvec_2i *fn)
 {
     TCGv_ptr a0, a1;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -130,7 +129,6 @@ void tcg_gen_gvec_2i_ool(uint32_t dofs, uint32_t aofs, TCGv_i64 c,
 
     tcg_temp_free_ptr(a0);
     tcg_temp_free_ptr(a1);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with three vector operands.  */
@@ -139,7 +137,7 @@ void tcg_gen_gvec_3_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         gen_helper_gvec_3 *fn)
 {
     TCGv_ptr a0, a1, a2;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -154,7 +152,6 @@ void tcg_gen_gvec_3_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a0);
     tcg_temp_free_ptr(a1);
     tcg_temp_free_ptr(a2);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with four vector operands.  */
@@ -163,7 +160,7 @@ void tcg_gen_gvec_4_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         int32_t data, gen_helper_gvec_4 *fn)
 {
     TCGv_ptr a0, a1, a2, a3;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -181,7 +178,6 @@ void tcg_gen_gvec_4_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a1);
     tcg_temp_free_ptr(a2);
     tcg_temp_free_ptr(a3);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with five vector operands.  */
@@ -190,7 +186,7 @@ void tcg_gen_gvec_5_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         uint32_t maxsz, int32_t data, gen_helper_gvec_5 *fn)
 {
     TCGv_ptr a0, a1, a2, a3, a4;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -211,7 +207,6 @@ void tcg_gen_gvec_5_ool(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a2);
     tcg_temp_free_ptr(a3);
     tcg_temp_free_ptr(a4);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with three vector operands
@@ -221,7 +216,7 @@ void tcg_gen_gvec_2_ptr(uint32_t dofs, uint32_t aofs,
                         int32_t data, gen_helper_gvec_2_ptr *fn)
 {
     TCGv_ptr a0, a1;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -233,7 +228,6 @@ void tcg_gen_gvec_2_ptr(uint32_t dofs, uint32_t aofs,
 
     tcg_temp_free_ptr(a0);
     tcg_temp_free_ptr(a1);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with three vector operands
@@ -243,7 +237,7 @@ void tcg_gen_gvec_3_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         int32_t data, gen_helper_gvec_3_ptr *fn)
 {
     TCGv_ptr a0, a1, a2;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -258,7 +252,6 @@ void tcg_gen_gvec_3_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a0);
     tcg_temp_free_ptr(a1);
     tcg_temp_free_ptr(a2);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with four vector operands
@@ -269,7 +262,7 @@ void tcg_gen_gvec_4_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         gen_helper_gvec_4_ptr *fn)
 {
     TCGv_ptr a0, a1, a2, a3;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -287,7 +280,6 @@ void tcg_gen_gvec_4_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a1);
     tcg_temp_free_ptr(a2);
     tcg_temp_free_ptr(a3);
-    tcg_temp_free_i32(desc);
 }
 
 /* Generate a call to a gvec-style helper with five vector operands
@@ -298,7 +290,7 @@ void tcg_gen_gvec_5_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
                         gen_helper_gvec_5_ptr *fn)
 {
     TCGv_ptr a0, a1, a2, a3, a4;
-    TCGv_i32 desc = tcg_const_i32(simd_desc(oprsz, maxsz, data));
+    TCGv_i32 desc = tcg_constant_i32(simd_desc(oprsz, maxsz, data));
 
     a0 = tcg_temp_new_ptr();
     a1 = tcg_temp_new_ptr();
@@ -319,7 +311,6 @@ void tcg_gen_gvec_5_ptr(uint32_t dofs, uint32_t aofs, uint32_t bofs,
     tcg_temp_free_ptr(a2);
     tcg_temp_free_ptr(a3);
     tcg_temp_free_ptr(a4);
-    tcg_temp_free_i32(desc);
 }
 
 /* Return true if we want to implement something of OPRSZ bytes
@@ -609,16 +600,13 @@ static void do_dup(unsigned vece, uint32_t dofs, uint32_t oprsz,
     /* Otherwise implement out of line.  */
     t_ptr = tcg_temp_new_ptr();
     tcg_gen_addi_ptr(t_ptr, cpu_env, dofs);
-    t_desc = tcg_const_i32(simd_desc(oprsz, maxsz, 0));
+    t_desc = tcg_constant_i32(simd_desc(oprsz, maxsz, 0));
 
     if (vece == MO_64) {
-        if (in_64) {
-            gen_helper_gvec_dup64(t_ptr, t_desc, in_64);
-        } else {
-            t_64 = tcg_const_i64(in_c);
-            gen_helper_gvec_dup64(t_ptr, t_desc, t_64);
-            tcg_temp_free_i64(t_64);
+        if (!in_64) {
+            in_64 = tcg_constant_i64(in_c);
         }
+        gen_helper_gvec_dup64(t_ptr, t_desc, in_64);
     } else {
         typedef void dup_fn(TCGv_ptr, TCGv_i32, TCGv_i32);
         static dup_fn * const fns[3] = {
@@ -646,7 +634,6 @@ static void do_dup(unsigned vece, uint32_t dofs, uint32_t oprsz,
     }
 
     tcg_temp_free_ptr(t_ptr);
-    tcg_temp_free_i32(t_desc);
     return;
 
  done:
@@ -1196,10 +1183,8 @@ void tcg_gen_gvec_2i(uint32_t dofs, uint32_t aofs, uint32_t oprsz,
             if (g->fno) {
                 tcg_gen_gvec_2_ool(dofs, aofs, oprsz, maxsz, c, g->fno);
             } else {
-                TCGv_i64 tcg_c = tcg_const_i64(c);
-                tcg_gen_gvec_2i_ool(dofs, aofs, tcg_c, oprsz,
-                                    maxsz, c, g->fnoi);
-                tcg_temp_free_i64(tcg_c);
+                tcg_gen_gvec_2i_ool(dofs, aofs, tcg_constant_i64(c),
+                                    oprsz, maxsz, 0, g->fnoi);
             }
             oprsz = maxsz;
         }
@@ -1647,16 +1632,14 @@ static void gen_addv_mask(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b, TCGv_i64 m)
 
 void tcg_gen_vec_add8_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_8, 0x80));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_8, 0x80));
     gen_addv_mask(d, a, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_add16_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_16, 0x8000));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_16, 0x8000));
     gen_addv_mask(d, a, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_add32_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
@@ -1740,9 +1723,8 @@ void tcg_gen_gvec_adds(unsigned vece, uint32_t dofs, uint32_t aofs,
 void tcg_gen_gvec_addi(unsigned vece, uint32_t dofs, uint32_t aofs,
                        int64_t c, uint32_t oprsz, uint32_t maxsz)
 {
-    TCGv_i64 tmp = tcg_const_i64(c);
+    TCGv_i64 tmp = tcg_constant_i64(c);
     tcg_gen_gvec_adds(vece, dofs, aofs, tmp, oprsz, maxsz);
-    tcg_temp_free_i64(tmp);
 }
 
 static const TCGOpcode vecop_list_sub[] = { INDEX_op_sub_vec, 0 };
@@ -1800,16 +1782,14 @@ static void gen_subv_mask(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b, TCGv_i64 m)
 
 void tcg_gen_vec_sub8_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_8, 0x80));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_8, 0x80));
     gen_subv_mask(d, a, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_sub16_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_16, 0x8000));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_16, 0x8000));
     gen_subv_mask(d, a, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_sub32_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
@@ -1920,9 +1900,8 @@ void tcg_gen_gvec_muls(unsigned vece, uint32_t dofs, uint32_t aofs,
 void tcg_gen_gvec_muli(unsigned vece, uint32_t dofs, uint32_t aofs,
                        int64_t c, uint32_t oprsz, uint32_t maxsz)
 {
-    TCGv_i64 tmp = tcg_const_i64(c);
+    TCGv_i64 tmp = tcg_constant_i64(c);
     tcg_gen_gvec_muls(vece, dofs, aofs, tmp, oprsz, maxsz);
-    tcg_temp_free_i64(tmp);
 }
 
 void tcg_gen_gvec_ssadd(unsigned vece, uint32_t dofs, uint32_t aofs,
@@ -1979,18 +1958,16 @@ void tcg_gen_gvec_sssub(unsigned vece, uint32_t dofs, uint32_t aofs,
 
 static void tcg_gen_usadd_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b)
 {
-    TCGv_i32 max = tcg_const_i32(-1);
+    TCGv_i32 max = tcg_constant_i32(-1);
     tcg_gen_add_i32(d, a, b);
     tcg_gen_movcond_i32(TCG_COND_LTU, d, d, a, max, d);
-    tcg_temp_free_i32(max);
 }
 
 static void tcg_gen_usadd_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 max = tcg_const_i64(-1);
+    TCGv_i64 max = tcg_constant_i64(-1);
     tcg_gen_add_i64(d, a, b);
     tcg_gen_movcond_i64(TCG_COND_LTU, d, d, a, max, d);
-    tcg_temp_free_i64(max);
 }
 
 void tcg_gen_gvec_usadd(unsigned vece, uint32_t dofs, uint32_t aofs,
@@ -2023,18 +2000,16 @@ void tcg_gen_gvec_usadd(unsigned vece, uint32_t dofs, uint32_t aofs,
 
 static void tcg_gen_ussub_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b)
 {
-    TCGv_i32 min = tcg_const_i32(0);
+    TCGv_i32 min = tcg_constant_i32(0);
     tcg_gen_sub_i32(d, a, b);
     tcg_gen_movcond_i32(TCG_COND_LTU, d, a, b, min, d);
-    tcg_temp_free_i32(min);
 }
 
 static void tcg_gen_ussub_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b)
 {
-    TCGv_i64 min = tcg_const_i64(0);
+    TCGv_i64 min = tcg_constant_i64(0);
     tcg_gen_sub_i64(d, a, b);
     tcg_gen_movcond_i64(TCG_COND_LTU, d, a, b, min, d);
-    tcg_temp_free_i64(min);
 }
 
 void tcg_gen_gvec_ussub(unsigned vece, uint32_t dofs, uint32_t aofs,
@@ -2195,16 +2170,14 @@ static void gen_negv_mask(TCGv_i64 d, TCGv_i64 b, TCGv_i64 m)
 
 void tcg_gen_vec_neg8_i64(TCGv_i64 d, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_8, 0x80));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_8, 0x80));
     gen_negv_mask(d, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_neg16_i64(TCGv_i64 d, TCGv_i64 b)
 {
-    TCGv_i64 m = tcg_const_i64(dup_const(MO_16, 0x8000));
+    TCGv_i64 m = tcg_constant_i64(dup_const(MO_16, 0x8000));
     gen_negv_mask(d, b, m);
-    tcg_temp_free_i64(m);
 }
 
 void tcg_gen_vec_neg32_i64(TCGv_i64 d, TCGv_i64 b)
@@ -2472,9 +2445,8 @@ void tcg_gen_gvec_ands(unsigned vece, uint32_t dofs, uint32_t aofs,
 void tcg_gen_gvec_andi(unsigned vece, uint32_t dofs, uint32_t aofs,
                        int64_t c, uint32_t oprsz, uint32_t maxsz)
 {
-    TCGv_i64 tmp = tcg_const_i64(dup_const(vece, c));
+    TCGv_i64 tmp = tcg_constant_i64(dup_const(vece, c));
     tcg_gen_gvec_2s(dofs, aofs, oprsz, maxsz, tmp, &gop_ands);
-    tcg_temp_free_i64(tmp);
 }
 
 static const GVecGen2s gop_xors = {
@@ -2497,9 +2469,8 @@ void tcg_gen_gvec_xors(unsigned vece, uint32_t dofs, uint32_t aofs,
 void tcg_gen_gvec_xori(unsigned vece, uint32_t dofs, uint32_t aofs,
                        int64_t c, uint32_t oprsz, uint32_t maxsz)
 {
-    TCGv_i64 tmp = tcg_const_i64(dup_const(vece, c));
+    TCGv_i64 tmp = tcg_constant_i64(dup_const(vece, c));
     tcg_gen_gvec_2s(dofs, aofs, oprsz, maxsz, tmp, &gop_xors);
-    tcg_temp_free_i64(tmp);
 }
 
 static const GVecGen2s gop_ors = {
@@ -2522,9 +2493,8 @@ void tcg_gen_gvec_ors(unsigned vece, uint32_t dofs, uint32_t aofs,
 void tcg_gen_gvec_ori(unsigned vece, uint32_t dofs, uint32_t aofs,
                       int64_t c, uint32_t oprsz, uint32_t maxsz)
 {
-    TCGv_i64 tmp = tcg_const_i64(dup_const(vece, c));
+    TCGv_i64 tmp = tcg_constant_i64(dup_const(vece, c));
     tcg_gen_gvec_2s(dofs, aofs, oprsz, maxsz, tmp, &gop_ors);
-    tcg_temp_free_i64(tmp);
 }
 
 void tcg_gen_vec_shl8i_i64(TCGv_i64 d, TCGv_i64 a, int64_t c)
@@ -3011,10 +2981,11 @@ void tcg_gen_gvec_rotls(unsigned vece, uint32_t dofs, uint32_t aofs,
 static void tcg_gen_shlv_mod_vec(unsigned vece, TCGv_vec d,
                                  TCGv_vec a, TCGv_vec b)
 {
-    TCGv_vec t = tcg_temp_new_vec_matching(d);
+    TCGType type = tcgv_vec_temp(d)->type;
+    TCGv_vec t = tcg_temp_new_vec(type);
+    TCGv_vec m = tcg_constant_vec(type, vece, (8 << vece) - 1);
 
-    tcg_gen_dupi_vec(vece, t, (8 << vece) - 1);
-    tcg_gen_and_vec(vece, t, t, b);
+    tcg_gen_and_vec(vece, t, b, m);
     tcg_gen_shlv_vec(vece, d, a, t);
     tcg_temp_free_vec(t);
 }
@@ -3074,10 +3045,11 @@ void tcg_gen_gvec_shlv(unsigned vece, uint32_t dofs, uint32_t aofs,
 static void tcg_gen_shrv_mod_vec(unsigned vece, TCGv_vec d,
                                  TCGv_vec a, TCGv_vec b)
 {
-    TCGv_vec t = tcg_temp_new_vec_matching(d);
+    TCGType type = tcgv_vec_temp(d)->type;
+    TCGv_vec t = tcg_temp_new_vec(type);
+    TCGv_vec m = tcg_constant_vec(type, vece, (8 << vece) - 1);
 
-    tcg_gen_dupi_vec(vece, t, (8 << vece) - 1);
-    tcg_gen_and_vec(vece, t, t, b);
+    tcg_gen_and_vec(vece, t, b, m);
     tcg_gen_shrv_vec(vece, d, a, t);
     tcg_temp_free_vec(t);
 }
@@ -3137,10 +3109,11 @@ void tcg_gen_gvec_shrv(unsigned vece, uint32_t dofs, uint32_t aofs,
 static void tcg_gen_sarv_mod_vec(unsigned vece, TCGv_vec d,
                                  TCGv_vec a, TCGv_vec b)
 {
-    TCGv_vec t = tcg_temp_new_vec_matching(d);
+    TCGType type = tcgv_vec_temp(d)->type;
+    TCGv_vec t = tcg_temp_new_vec(type);
+    TCGv_vec m = tcg_constant_vec(type, vece, (8 << vece) - 1);
 
-    tcg_gen_dupi_vec(vece, t, (8 << vece) - 1);
-    tcg_gen_and_vec(vece, t, t, b);
+    tcg_gen_and_vec(vece, t, b, m);
     tcg_gen_sarv_vec(vece, d, a, t);
     tcg_temp_free_vec(t);
 }
@@ -3200,10 +3173,11 @@ void tcg_gen_gvec_sarv(unsigned vece, uint32_t dofs, uint32_t aofs,
 static void tcg_gen_rotlv_mod_vec(unsigned vece, TCGv_vec d,
                                   TCGv_vec a, TCGv_vec b)
 {
-    TCGv_vec t = tcg_temp_new_vec_matching(d);
+    TCGType type = tcgv_vec_temp(d)->type;
+    TCGv_vec t = tcg_temp_new_vec(type);
+    TCGv_vec m = tcg_constant_vec(type, vece, (8 << vece) - 1);
 
-    tcg_gen_dupi_vec(vece, t, (8 << vece) - 1);
-    tcg_gen_and_vec(vece, t, t, b);
+    tcg_gen_and_vec(vece, t, b, m);
     tcg_gen_rotlv_vec(vece, d, a, t);
     tcg_temp_free_vec(t);
 }
@@ -3259,10 +3233,11 @@ void tcg_gen_gvec_rotlv(unsigned vece, uint32_t dofs, uint32_t aofs,
 static void tcg_gen_rotrv_mod_vec(unsigned vece, TCGv_vec d,
                                   TCGv_vec a, TCGv_vec b)
 {
-    TCGv_vec t = tcg_temp_new_vec_matching(d);
+    TCGType type = tcgv_vec_temp(d)->type;
+    TCGv_vec t = tcg_temp_new_vec(type);
+    TCGv_vec m = tcg_constant_vec(type, vece, (8 << vece) - 1);
 
-    tcg_gen_dupi_vec(vece, t, (8 << vece) - 1);
-    tcg_gen_and_vec(vece, t, t, b);
+    tcg_gen_and_vec(vece, t, b, m);
     tcg_gen_rotrv_vec(vece, d, a, t);
     tcg_temp_free_vec(t);
 }
