diff mbox series

[PULL,30/33] target/mips: Use tcg_constant_tl() instead of tcg_gen_movi_tl()

Message ID 20241015154443.71763-31-philmd@linaro.org (mailing list archive)
State New, archived
Headers show
Series [PULL,01/33] qemu/bswap: Undefine CPU_CONVERT() once done | expand

Commit Message

Philippe Mathieu-Daudé Oct. 15, 2024, 3:44 p.m. UTC 
Directly use tcg_constant_tl() for constant integer, this
save a call to tcg_gen_movi_tl(), often saving a temp register.

Most of the places found using the following Coccinelle spatch script:

  @@
  identifier tmp;
  constant val;
  @@
  *    TCGv tmp = tcg_temp_new();
       ...
  *    tcg_gen_movi_tl(tmp, val);

  @@
  identifier tmp;
  int val;
  @@
  *    TCGv tmp = tcg_temp_new();
       ...
  *    tcg_gen_movi_i64(tmp, val);

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241004202621.4321-2-philmd@linaro.org>
---
 target/mips/tcg/translate.c              |  49 ++++------
 target/mips/tcg/nanomips_translate.c.inc | 111 +++++++++--------------
 2 files changed, 59 insertions(+), 101 deletions(-)
diff mbox series

Patch

diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c
index 53a0cbf92be..d92fc418edd 100644
--- a/target/mips/tcg/translate.c
+++ b/target/mips/tcg/translate.c
@@ -2252,8 +2252,7 @@  static void gen_st_cond(DisasContext *ctx, int rt, int base, int offset,
     /* compare the address against that of the preceding LL */
     gen_base_offset_addr(ctx, addr, base, offset);
     tcg_gen_brcond_tl(TCG_COND_EQ, addr, cpu_lladdr, l1);
-    tcg_gen_movi_tl(t0, 0);
-    gen_store_gpr(t0, rt);
+    gen_store_gpr(tcg_constant_tl(0), rt);
     tcg_gen_br(done);
 
     gen_set_label(l1);
@@ -3059,8 +3058,7 @@  static void gen_r6_muldiv(DisasContext *ctx, int opc, int rd, int rs, int rt)
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_div_tl(cpu_gpr[rd], t0, t1);
             tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]);
         }
@@ -3076,30 +3074,27 @@  static void gen_r6_muldiv(DisasContext *ctx, int opc, int rd, int rs, int rt)
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_rem_tl(cpu_gpr[rd], t0, t1);
             tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]);
         }
         break;
     case R6_OPC_DIVU:
         {
-            TCGv t2 = tcg_constant_tl(0);
-            TCGv t3 = tcg_constant_tl(1);
             tcg_gen_ext32u_tl(t0, t0);
             tcg_gen_ext32u_tl(t1, t1);
-            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1, t2, t3, t1);
+            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1,
+                               tcg_constant_tl(0), tcg_constant_tl(1), t1);
             tcg_gen_divu_tl(cpu_gpr[rd], t0, t1);
             tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]);
         }
         break;
     case R6_OPC_MODU:
         {
-            TCGv t2 = tcg_constant_tl(0);
-            TCGv t3 = tcg_constant_tl(1);
             tcg_gen_ext32u_tl(t0, t0);
             tcg_gen_ext32u_tl(t1, t1);
-            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1, t2, t3, t1);
+            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1,
+                               tcg_constant_tl(0), tcg_constant_tl(1), t1);
             tcg_gen_remu_tl(cpu_gpr[rd], t0, t1);
             tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]);
         }
@@ -3154,8 +3149,7 @@  static void gen_r6_muldiv(DisasContext *ctx, int opc, int rd, int rs, int rt)
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_div_tl(cpu_gpr[rd], t0, t1);
         }
         break;
@@ -3168,24 +3162,21 @@  static void gen_r6_muldiv(DisasContext *ctx, int opc, int rd, int rs, int rt)
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_rem_tl(cpu_gpr[rd], t0, t1);
         }
         break;
     case R6_OPC_DDIVU:
         {
-            TCGv t2 = tcg_constant_tl(0);
-            TCGv t3 = tcg_constant_tl(1);
-            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1, t2, t3, t1);
+            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1,
+                               tcg_constant_tl(0), tcg_constant_tl(1), t1);
             tcg_gen_divu_i64(cpu_gpr[rd], t0, t1);
         }
         break;
     case R6_OPC_DMODU:
         {
-            TCGv t2 = tcg_constant_tl(0);
-            TCGv t3 = tcg_constant_tl(1);
-            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1, t2, t3, t1);
+            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1,
+                               tcg_constant_tl(0), tcg_constant_tl(1), t1);
             tcg_gen_remu_i64(cpu_gpr[rd], t0, t1);
         }
         break;
@@ -3238,8 +3229,7 @@  static void gen_div1_tx79(DisasContext *ctx, uint32_t opc, int rs, int rt)
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_div_tl(cpu_LO[1], t0, t1);
             tcg_gen_rem_tl(cpu_HI[1], t0, t1);
             tcg_gen_ext32s_tl(cpu_LO[1], cpu_LO[1]);
@@ -3294,8 +3284,7 @@  static void gen_muldiv(DisasContext *ctx, uint32_t opc,
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_div_tl(cpu_LO[acc], t0, t1);
             tcg_gen_rem_tl(cpu_HI[acc], t0, t1);
             tcg_gen_ext32s_tl(cpu_LO[acc], cpu_LO[acc]);
@@ -3347,17 +3336,15 @@  static void gen_muldiv(DisasContext *ctx, uint32_t opc,
             tcg_gen_and_tl(t2, t2, t3);
             tcg_gen_setcondi_tl(TCG_COND_EQ, t3, t1, 0);
             tcg_gen_or_tl(t2, t2, t3);
-            tcg_gen_movi_tl(t3, 0);
-            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, t3, t2, t1);
+            tcg_gen_movcond_tl(TCG_COND_NE, t1, t2, tcg_constant_tl(0), t2, t1);
             tcg_gen_div_tl(cpu_LO[acc], t0, t1);
             tcg_gen_rem_tl(cpu_HI[acc], t0, t1);
         }
         break;
     case OPC_DDIVU:
         {
-            TCGv t2 = tcg_constant_tl(0);
-            TCGv t3 = tcg_constant_tl(1);
-            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1, t2, t3, t1);
+            tcg_gen_movcond_tl(TCG_COND_EQ, t1, t1,
+                               tcg_constant_tl(0), tcg_constant_tl(1), t1);
             tcg_gen_divu_i64(cpu_LO[acc], t0, t1);
             tcg_gen_remu_i64(cpu_HI[acc], t0, t1);
         }
diff --git a/target/mips/tcg/nanomips_translate.c.inc b/target/mips/tcg/nanomips_translate.c.inc
index 8e05a36b545..1e274143bbd 100644
--- a/target/mips/tcg/nanomips_translate.c.inc
+++ b/target/mips/tcg/nanomips_translate.c.inc
@@ -1053,8 +1053,7 @@  static void gen_scwp(DisasContext *ctx, uint32_t base, int16_t offset,
         tcg_gen_movi_tl(cpu_gpr[reg1], 0);
     }
     gen_set_label(lab_done);
-    tcg_gen_movi_tl(lladdr, -1);
-    tcg_gen_st_tl(lladdr, tcg_env, offsetof(CPUMIPSState, lladdr));
+    tcg_gen_st_tl(tcg_constant_tl(-1), tcg_env, offsetof(CPUMIPSState, lladdr));
 }
 
 static void gen_adjust_sp(DisasContext *ctx, int u)
@@ -1544,7 +1543,6 @@  static void gen_pool32axf_1_nanomips_insn(DisasContext *ctx, uint32_t opc,
 {
     int16_t imm;
     TCGv t0 = tcg_temp_new();
-    TCGv t1 = tcg_temp_new();
     TCGv v0_t = tcg_temp_new();
 
     gen_load_gpr(v0_t, v1);
@@ -1571,12 +1569,10 @@  static void gen_pool32axf_1_nanomips_insn(DisasContext *ctx, uint32_t opc,
         check_dsp(ctx);
         switch (extract32(ctx->opcode, 12, 2)) {
         case NM_MTHLIP:
-            tcg_gen_movi_tl(t0, v2 >> 3);
-            gen_helper_mthlip(t0, v0_t, tcg_env);
+            gen_helper_mthlip(tcg_constant_tl(v2 >> 3), v0_t, tcg_env);
             break;
         case NM_SHILOV:
-            tcg_gen_movi_tl(t0, v2 >> 3);
-            gen_helper_shilo(t0, v0_t, tcg_env);
+            gen_helper_shilo(tcg_constant_tl(v2 >> 3), v0_t, tcg_env);
             break;
         default:
             gen_reserved_instruction(ctx);
@@ -1588,39 +1584,34 @@  static void gen_pool32axf_1_nanomips_insn(DisasContext *ctx, uint32_t opc,
         imm = extract32(ctx->opcode, 14, 7);
         switch (extract32(ctx->opcode, 12, 2)) {
         case NM_RDDSP:
-            tcg_gen_movi_tl(t0, imm);
-            gen_helper_rddsp(t0, t0, tcg_env);
+            gen_helper_rddsp(t0, tcg_constant_tl(imm), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_WRDSP:
             gen_load_gpr(t0, ret);
-            tcg_gen_movi_tl(t1, imm);
-            gen_helper_wrdsp(t0, t1, tcg_env);
+            gen_helper_wrdsp(t0, tcg_constant_tl(imm), tcg_env);
             break;
         case NM_EXTP:
-            tcg_gen_movi_tl(t0, v2 >> 3);
-            tcg_gen_movi_tl(t1, v1);
-            gen_helper_extp(t0, t0, t1, tcg_env);
+            gen_helper_extp(t0, tcg_constant_tl(v2 >> 3),
+                            tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_EXTPDP:
-            tcg_gen_movi_tl(t0, v2 >> 3);
-            tcg_gen_movi_tl(t1, v1);
-            gen_helper_extpdp(t0, t0, t1, tcg_env);
+            gen_helper_extpdp(t0, tcg_constant_tl(v2 >> 3),
+                              tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         }
         break;
     case NM_POOL32AXF_1_4:
         check_dsp(ctx);
-        tcg_gen_movi_tl(t0, v2 >> 2);
         switch (extract32(ctx->opcode, 12, 1)) {
         case NM_SHLL_QB:
-            gen_helper_shll_qb(t0, t0, v0_t, tcg_env);
+            gen_helper_shll_qb(t0, tcg_constant_tl(v2 >> 2), v0_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_SHRL_QB:
-            gen_helper_shrl_qb(t0, t0, v0_t);
+            gen_helper_shrl_qb(t0, tcg_constant_tl(v2 >> 2), v0_t);
             gen_store_gpr(t0, ret);
             break;
         }
@@ -1631,23 +1622,25 @@  static void gen_pool32axf_1_nanomips_insn(DisasContext *ctx, uint32_t opc,
         break;
     case NM_POOL32AXF_1_7:
         check_dsp(ctx);
-        tcg_gen_movi_tl(t0, v2 >> 3);
-        tcg_gen_movi_tl(t1, v1);
         switch (extract32(ctx->opcode, 12, 2)) {
         case NM_EXTR_W:
-            gen_helper_extr_w(t0, t0, t1, tcg_env);
+            gen_helper_extr_w(t0, tcg_constant_tl(v2 >> 3),
+                              tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_EXTR_R_W:
-            gen_helper_extr_r_w(t0, t0, t1, tcg_env);
+            gen_helper_extr_r_w(t0, tcg_constant_tl(v2 >> 3),
+                                tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_EXTR_RS_W:
-            gen_helper_extr_rs_w(t0, t0, t1, tcg_env);
+            gen_helper_extr_rs_w(t0, tcg_constant_tl(v2 >> 3),
+                                 tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_EXTR_S_H:
-            gen_helper_extr_s_h(t0, t0, t1, tcg_env);
+            gen_helper_extr_s_h(t0, tcg_constant_tl(v2 >> 3),
+                                tcg_constant_tl(v1), tcg_env);
             gen_store_gpr(t0, ret);
             break;
         }
@@ -1849,8 +1842,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
         case NM_EXTRV_W:
             check_dsp(ctx);
             gen_load_gpr(v1_t, rs);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extr_w(t0, t0, v1_t, tcg_env);
+            gen_helper_extr_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         }
@@ -1904,8 +1896,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
             break;
         case NM_EXTRV_R_W:
             check_dsp(ctx);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extr_r_w(t0, t0, v1_t, tcg_env);
+            gen_helper_extr_r_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         default:
@@ -1924,8 +1915,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
             break;
         case NM_EXTPV:
             check_dsp(ctx);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extp(t0, t0, v1_t, tcg_env);
+            gen_helper_extp(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_MSUB:
@@ -1948,8 +1938,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
             break;
         case NM_EXTRV_RS_W:
             check_dsp(ctx);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extr_rs_w(t0, t0, v1_t, tcg_env);
+            gen_helper_extr_rs_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         }
@@ -1965,8 +1954,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
             break;
         case NM_EXTPDPV:
             check_dsp(ctx);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extpdp(t0, t0, v1_t, tcg_env);
+            gen_helper_extpdp(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         case NM_MSUBU:
@@ -1991,8 +1979,7 @@  static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
             break;
         case NM_EXTRV_S_H:
             check_dsp(ctx);
-            tcg_gen_movi_tl(t0, rd >> 3);
-            gen_helper_extr_s_h(t0, t0, v1_t, tcg_env);
+            gen_helper_extr_s_h(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
             gen_store_gpr(t0, ret);
             break;
         }
@@ -2150,24 +2137,22 @@  static void gen_pool32axf_7_nanomips_insn(DisasContext *ctx, uint32_t opc,
     switch (opc) {
     case NM_SHRA_R_QB:
         check_dsp_r2(ctx);
-        tcg_gen_movi_tl(t0, rd >> 2);
         switch (extract32(ctx->opcode, 12, 1)) {
         case 0:
             /* NM_SHRA_QB */
-            gen_helper_shra_qb(t0, t0, rs_t);
+            gen_helper_shra_qb(t0, tcg_constant_tl(rd >> 2), rs_t);
             gen_store_gpr(t0, rt);
             break;
         case 1:
             /* NM_SHRA_R_QB */
-            gen_helper_shra_r_qb(t0, t0, rs_t);
+            gen_helper_shra_r_qb(t0, tcg_constant_tl(rd >> 2), rs_t);
             gen_store_gpr(t0, rt);
             break;
         }
         break;
     case NM_SHRL_PH:
         check_dsp_r2(ctx);
-        tcg_gen_movi_tl(t0, rd >> 1);
-        gen_helper_shrl_ph(t0, t0, rs_t);
+        gen_helper_shrl_ph(t0, tcg_constant_tl(rd >> 1), rs_t);
         gen_store_gpr(t0, rt);
         break;
     case NM_REPL_QB:
@@ -2181,8 +2166,7 @@  static void gen_pool32axf_7_nanomips_insn(DisasContext *ctx, uint32_t opc,
                      (uint32_t)imm << 8  |
                      (uint32_t)imm;
             result = (int32_t)result;
-            tcg_gen_movi_tl(t0, result);
-            gen_store_gpr(t0, rt);
+            gen_store_gpr(tcg_constant_tl(result), rt);
         }
         break;
     default:
@@ -2303,10 +2287,9 @@  static void gen_compute_imm_branch(DisasContext *ctx, uint32_t opc,
 {
     TCGCond cond = TCG_COND_ALWAYS;
     TCGv t0 = tcg_temp_new();
-    TCGv t1 = tcg_temp_new();
+    TCGv timm = tcg_constant_tl(imm);
 
     gen_load_gpr(t0, rt);
-    tcg_gen_movi_tl(t1, imm);
     ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
 
     /* Load needed operands and calculate btarget */
@@ -2335,7 +2318,7 @@  static void gen_compute_imm_branch(DisasContext *ctx, uint32_t opc,
         } else {
             tcg_gen_shri_tl(t0, t0, imm);
             tcg_gen_andi_tl(t0, t0, 1);
-            tcg_gen_movi_tl(t1, 0);
+            timm = tcg_constant_tl(0);
             if (opc == NM_BBEQZC) {
                 cond = TCG_COND_EQ;
             } else {
@@ -2390,7 +2373,7 @@  static void gen_compute_imm_branch(DisasContext *ctx, uint32_t opc,
         /* Conditional compact branch */
         TCGLabel *fs = gen_new_label();
 
-        tcg_gen_brcond_tl(tcg_invert_cond(cond), t0, t1, fs);
+        tcg_gen_brcond_tl(tcg_invert_cond(cond), t0, timm, fs);
 
         gen_goto_tb(ctx, 1, ctx->btarget);
         gen_set_label(fs);
@@ -2404,7 +2387,6 @@  static void gen_compute_nanomips_pbalrsc_branch(DisasContext *ctx, int rs,
                                                 int rt)
 {
     TCGv t0 = tcg_temp_new();
-    TCGv t1 = tcg_temp_new();
 
     /* load rs */
     gen_load_gpr(t0, rs);
@@ -2416,8 +2398,7 @@  static void gen_compute_nanomips_pbalrsc_branch(DisasContext *ctx, int rs,
 
     /* calculate btarget */
     tcg_gen_shli_tl(t0, t0, 1);
-    tcg_gen_movi_tl(t1, ctx->base.pc_next + 4);
-    gen_op_addr_add(ctx, btarget, t1, t0);
+    gen_op_addr_add(ctx, btarget, tcg_constant_tl(ctx->base.pc_next + 4), t0);
 
     /* branch completion */
     clear_branch_hflags(ctx);
@@ -3444,13 +3425,10 @@  static void gen_pool32a5_nanomips_insn(DisasContext *ctx, int opc,
     case NM_SHILO:
         check_dsp(ctx);
         {
-            TCGv tv0 = tcg_temp_new();
-            TCGv tv1 = tcg_temp_new();
             int16_t imm = extract32(ctx->opcode, 16, 7);
 
-            tcg_gen_movi_tl(tv0, rd >> 3);
-            tcg_gen_movi_tl(tv1, imm);
-            gen_helper_shilo(tv0, tv1, tcg_env);
+            gen_helper_shilo(tcg_constant_tl(rd >> 3),
+                             tcg_constant_tl(imm), tcg_env);
         }
         break;
     case NM_MULEQ_S_W_PHL:
@@ -3505,8 +3483,7 @@  static void gen_pool32a5_nanomips_insn(DisasContext *ctx, int opc,
         break;
     case NM_SHRA_R_W:
         check_dsp(ctx);
-        tcg_gen_movi_tl(t0, rd);
-        gen_helper_shra_r_w(v1_t, t0, v1_t);
+        gen_helper_shra_r_w(v1_t, tcg_constant_tl(rd), v1_t);
         gen_store_gpr(v1_t, rt);
         break;
     case NM_SHRA_R_PH:
@@ -3546,8 +3523,7 @@  static void gen_pool32a5_nanomips_insn(DisasContext *ctx, int opc,
         break;
     case NM_SHLL_S_W:
         check_dsp(ctx);
-        tcg_gen_movi_tl(t0, rd);
-        gen_helper_shll_s_w(v1_t, t0, v1_t, tcg_env);
+        gen_helper_shll_s_w(v1_t, tcg_constant_tl(rd), v1_t, tcg_env);
         gen_store_gpr(v1_t, rt);
         break;
     case NM_REPL_PH:
@@ -3728,14 +3704,11 @@  static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx)
             case NM_LWPC48:
                 check_nms(ctx);
                 if (rt != 0) {
-                    TCGv t0;
-                    t0 = tcg_temp_new();
-
                     target_long addr = addr_add(ctx, ctx->base.pc_next + 6,
                                                 addr_off);
 
-                    tcg_gen_movi_tl(t0, addr);
-                    tcg_gen_qemu_ld_tl(cpu_gpr[rt], t0, ctx->mem_idx,
+                    tcg_gen_qemu_ld_tl(cpu_gpr[rt], tcg_constant_tl(addr),
+                                       ctx->mem_idx,
                                        mo_endian(ctx) | MO_SL
                                             | ctx->default_tcg_memop_mask);
                 }
@@ -3743,17 +3716,15 @@  static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx)
             case NM_SWPC48:
                 check_nms(ctx);
                 {
-                    TCGv t0, t1;
-                    t0 = tcg_temp_new();
+                    TCGv t1;
                     t1 = tcg_temp_new();
 
                     target_long addr = addr_add(ctx, ctx->base.pc_next + 6,
                                                 addr_off);
 
-                    tcg_gen_movi_tl(t0, addr);
                     gen_load_gpr(t1, rt);
 
-                    tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
+                    tcg_gen_qemu_st_tl(t1, tcg_constant_tl(addr), ctx->mem_idx,
                                        mo_endian(ctx) | MO_UL
                                             | ctx->default_tcg_memop_mask);
                 }