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Re: [PATCH 55/70] target/sparc: Avoid tcg_const_{tl,i32}


From: Mark Cave-Ayland
Subject: Re: [PATCH 55/70] target/sparc: Avoid tcg_const_{tl,i32}
Date: Wed, 1 Mar 2023 17:02:44 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0

On 27/02/2023 05:42, Richard Henderson wrote:

All remaining uses are strictly read-only.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
  target/sparc/translate.c | 80 +++++++++++++++++++---------------------
  1 file changed, 38 insertions(+), 42 deletions(-)

diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 925023adef..137bdc5159 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -550,7 +550,7 @@ static inline void gen_op_mulscc(TCGv dst, TCGv src1, TCGv 
src2)
      if (!(env->y & 1))
          T1 = 0;
      */
-    zero = tcg_const_tl(0);
+    zero = tcg_constant_tl(0);
      tcg_gen_andi_tl(cpu_cc_src, src1, 0xffffffff);
      tcg_gen_andi_tl(r_temp, cpu_y, 0x1);
      tcg_gen_andi_tl(cpu_cc_src2, src2, 0xffffffff);
@@ -928,8 +928,8 @@ static void gen_branch_n(DisasContext *dc, target_ulong pc1)
          tcg_gen_mov_tl(cpu_pc, cpu_npc);
tcg_gen_addi_tl(cpu_npc, cpu_npc, 4);
-        t = tcg_const_tl(pc1);
-        z = tcg_const_tl(0);
+        t = tcg_constant_tl(pc1);
+        z = tcg_constant_tl(0);
          tcg_gen_movcond_tl(TCG_COND_NE, cpu_npc, cpu_cond, z, t, cpu_npc);
dc->pc = DYNAMIC_PC;
@@ -938,9 +938,9 @@ static void gen_branch_n(DisasContext *dc, target_ulong pc1)
static inline void gen_generic_branch(DisasContext *dc)
  {
-    TCGv npc0 = tcg_const_tl(dc->jump_pc[0]);
-    TCGv npc1 = tcg_const_tl(dc->jump_pc[1]);
-    TCGv zero = tcg_const_tl(0);
+    TCGv npc0 = tcg_constant_tl(dc->jump_pc[0]);
+    TCGv npc1 = tcg_constant_tl(dc->jump_pc[1]);
+    TCGv zero = tcg_constant_tl(0);
tcg_gen_movcond_tl(TCG_COND_NE, cpu_npc, cpu_cond, zero, npc0, npc1);
  }
@@ -981,18 +981,14 @@ static inline void save_state(DisasContext *dc)
static void gen_exception(DisasContext *dc, int which)
  {
-    TCGv_i32 t;
-
      save_state(dc);
-    t = tcg_const_i32(which);
-    gen_helper_raise_exception(cpu_env, t);
+    gen_helper_raise_exception(cpu_env, tcg_constant_i32(which));
      dc->base.is_jmp = DISAS_NORETURN;
  }
static void gen_check_align(TCGv addr, int mask)
  {
-    TCGv_i32 r_mask = tcg_const_i32(mask);
-    gen_helper_check_align(cpu_env, addr, r_mask);
+    gen_helper_check_align(cpu_env, addr, tcg_constant_i32(mask));
  }
static inline void gen_mov_pc_npc(DisasContext *dc)
@@ -1074,7 +1070,7 @@ static void gen_compare(DisasCompare *cmp, bool xcc, 
unsigned int cond,
          cmp->cond = logic_cond[cond];
      do_compare_dst_0:
          cmp->is_bool = false;
-        cmp->c2 = tcg_const_tl(0);
+        cmp->c2 = tcg_constant_tl(0);
  #ifdef TARGET_SPARC64
          if (!xcc) {
              cmp->c1 = tcg_temp_new();
@@ -1127,7 +1123,7 @@ static void gen_compare(DisasCompare *cmp, bool xcc, 
unsigned int cond,
          cmp->cond = TCG_COND_NE;
          cmp->is_bool = true;
          cmp->c1 = r_dst = tcg_temp_new();
-        cmp->c2 = tcg_const_tl(0);
+        cmp->c2 = tcg_constant_tl(0);
switch (cond) {
          case 0x0:
@@ -1192,7 +1188,7 @@ static void gen_fcompare(DisasCompare *cmp, unsigned int 
cc, unsigned int cond)
      cmp->cond = TCG_COND_NE;
      cmp->is_bool = true;
      cmp->c1 = r_dst = tcg_temp_new();
-    cmp->c2 = tcg_const_tl(0);
+    cmp->c2 = tcg_constant_tl(0);
switch (cc) {
      default:
@@ -1307,7 +1303,7 @@ static void gen_compare_reg(DisasCompare *cmp, int cond, 
TCGv r_src)
      cmp->cond = tcg_invert_cond(gen_tcg_cond_reg[cond]);
      cmp->is_bool = false;
      cmp->c1 = r_src;
-    cmp->c2 = tcg_const_tl(0);
+    cmp->c2 = tcg_constant_tl(0);
  }
static inline void gen_cond_reg(TCGv r_dst, int cond, TCGv r_src)
@@ -1908,7 +1904,7 @@ static void gen_swap(DisasContext *dc, TCGv dst, TCGv src,
static void gen_ldstub(DisasContext *dc, TCGv dst, TCGv addr, int mmu_idx)
  {
-    TCGv m1 = tcg_const_tl(0xff);
+    TCGv m1 = tcg_constant_tl(0xff);
      gen_address_mask(dc, addr);
      tcg_gen_atomic_xchg_tl(dst, addr, m1, mmu_idx, MO_UB);
  }
@@ -2163,8 +2159,8 @@ static void gen_ld_asi(DisasContext *dc, TCGv dst, TCGv 
addr,
          break;
      default:
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(memop);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(memop);
save_state(dc);
  #ifdef TARGET_SPARC64
@@ -2217,7 +2213,7 @@ static void gen_st_asi(DisasContext *dc, TCGv src, TCGv 
addr,
          {
              TCGv saddr = tcg_temp_new();
              TCGv daddr = tcg_temp_new();
-            TCGv four = tcg_const_tl(4);
+            TCGv four = tcg_constant_tl(4);
              TCGv_i32 tmp = tcg_temp_new_i32();
              int i;
@@ -2236,8 +2232,8 @@ static void gen_st_asi(DisasContext *dc, TCGv src, TCGv addr,
  #endif
      default:
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(memop & MO_SIZE);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(memop & MO_SIZE);
save_state(dc);
  #ifdef TARGET_SPARC64
@@ -2313,15 +2309,15 @@ static void gen_ldstub_asi(DisasContext *dc, TCGv dst, 
TCGv addr, int insn)
          if (tb_cflags(dc->base.tb) & CF_PARALLEL) {
              gen_helper_exit_atomic(cpu_env);
          } else {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(MO_UB);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(MO_UB);
              TCGv_i64 s64, t64;
save_state(dc);
              t64 = tcg_temp_new_i64();
              gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_mop);
- s64 = tcg_const_i64(0xff);
+            s64 = tcg_constant_i64(0xff);
              gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_mop);
tcg_gen_trunc_i64_tl(dst, t64);
@@ -2382,7 +2378,7 @@ static void gen_ldf_asi(DisasContext *dc, TCGv addr,
/* The first operation checks required alignment. */
              memop = da.memop | MO_ALIGN_64;
-            eight = tcg_const_tl(8);
+            eight = tcg_constant_tl(8);
              for (i = 0; ; ++i) {
                  tcg_gen_qemu_ld_i64(cpu_fpr[rd / 2 + i], addr,
                                      da.mem_idx, memop);
@@ -2409,8 +2405,8 @@ static void gen_ldf_asi(DisasContext *dc, TCGv addr,
default:
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(da.memop);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(da.memop);
save_state(dc);
              /* According to the table in the UA2011 manual, the only
@@ -2491,7 +2487,7 @@ static void gen_stf_asi(DisasContext *dc, TCGv addr,
/* The first operation checks required alignment. */
              memop = da.memop | MO_ALIGN_64;
-            eight = tcg_const_tl(8);
+            eight = tcg_constant_tl(8);
              for (i = 0; ; ++i) {
                  tcg_gen_qemu_st_i64(cpu_fpr[rd / 2 + i], addr,
                                      da.mem_idx, memop);
@@ -2566,8 +2562,8 @@ static void gen_ldda_asi(DisasContext *dc, TCGv addr, int 
insn, int rd)
             real hardware allows others.  This can be seen with e.g.
             FreeBSD 10.3 wrt ASI_IC_TAG.  */
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(da.memop);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(da.memop);
              TCGv_i64 tmp = tcg_temp_new_i64();
save_state(dc);
@@ -2625,8 +2621,8 @@ static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv 
addr,
          /* ??? In theory we've handled all of the ASIs that are valid
             for stda, and this should raise DAE_invalid_asi.  */
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(da.memop);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(da.memop);
              TCGv_i64 t64 = tcg_temp_new_i64();
/* See above. */
@@ -2686,8 +2682,8 @@ static void gen_ldda_asi(DisasContext *dc, TCGv addr, int 
insn, int rd)
          break;
      default:
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(MO_UQ);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(MO_UQ);
save_state(dc);
              gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_mop);
@@ -2724,7 +2720,7 @@ static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv 
addr,
             as a cacheline-style operation.  */
          {
              TCGv d_addr = tcg_temp_new();
-            TCGv eight = tcg_const_tl(8);
+            TCGv eight = tcg_constant_tl(8);
              int i;
tcg_gen_andi_tl(d_addr, addr, -8);
@@ -2736,8 +2732,8 @@ static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv 
addr,
          break;
      default:
          {
-            TCGv_i32 r_asi = tcg_const_i32(da.asi);
-            TCGv_i32 r_mop = tcg_const_i32(MO_UQ);
+            TCGv_i32 r_asi = tcg_constant_i32(da.asi);
+            TCGv_i32 r_mop = tcg_constant_i32(MO_UQ);
save_state(dc);
              gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_mop);
@@ -2786,7 +2782,7 @@ static void gen_fmovs(DisasContext *dc, DisasCompare 
*cmp, int rd, int rs)
      s1 = gen_load_fpr_F(dc, rs);
      s2 = gen_load_fpr_F(dc, rd);
      dst = gen_dest_fpr_F(dc);
-    zero = tcg_const_i32(0);
+    zero = tcg_constant_i32(0);
tcg_gen_movcond_i32(TCG_COND_NE, dst, c32, zero, s1, s2); @@ -3215,7 +3211,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
                          TCGv_i32 r_const;
r_tickptr = tcg_temp_new_ptr();
-                        r_const = tcg_const_i32(dc->mem_idx);
+                        r_const = tcg_constant_i32(dc->mem_idx);
                          tcg_gen_ld_ptr(r_tickptr, cpu_env,
                                         offsetof(CPUSPARCState, tick));
                          if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
@@ -3267,7 +3263,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned 
int insn)
                          TCGv_i32 r_const;
r_tickptr = tcg_temp_new_ptr();
-                        r_const = tcg_const_i32(dc->mem_idx);
+                        r_const = tcg_constant_i32(dc->mem_idx);
                          tcg_gen_ld_ptr(r_tickptr, cpu_env,
                                         offsetof(CPUSPARCState, stick));
                          if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {
@@ -3397,7 +3393,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned 
int insn)
                          TCGv_i32 r_const;
r_tickptr = tcg_temp_new_ptr();
-                        r_const = tcg_const_i32(dc->mem_idx);
+                        r_const = tcg_constant_i32(dc->mem_idx);
                          tcg_gen_ld_ptr(r_tickptr, cpu_env,
                                         offsetof(CPUSPARCState, tick));
                          if (tb_cflags(dc->base.tb) & CF_USE_ICOUNT) {

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


ATB,

Mark.



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