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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>
Subject: [PULL v2 09/27] tcg: Replace addr{lo,
 hi}_reg with addr_reg in TCGLabelQemuLdst
Date: Mon, 17 Feb 2025 11:29:50 -0800
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There is now always only one guest address register.

Reviewed-by: Philippe Mathieu-Daud=C3=A9 <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tcg.c                        | 18 +++++++++---------
 tcg/aarch64/tcg-target.c.inc     |  4 ++--
 tcg/arm/tcg-target.c.inc         |  4 ++--
 tcg/i386/tcg-target.c.inc        |  4 ++--
 tcg/loongarch64/tcg-target.c.inc |  4 ++--
 tcg/mips/tcg-target.c.inc        |  4 ++--
 tcg/ppc/tcg-target.c.inc         |  4 ++--
 tcg/riscv/tcg-target.c.inc       |  4 ++--
 tcg/s390x/tcg-target.c.inc       |  4 ++--
 tcg/sparc64/tcg-target.c.inc     |  4 ++--
 10 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/tcg/tcg.c b/tcg/tcg.c
index fef93b25ff..55cb9b3ac7 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -100,8 +100,7 @@ struct TCGLabelQemuLdst {
     bool is_ld;             /* qemu_ld: true, qemu_st: false */
     MemOpIdx oi;
     TCGType type;           /* result type of a load */
-    TCGReg addrlo_reg;      /* reg index for low word of guest virtual add=
r */
-    TCGReg addrhi_reg;      /* reg index for high word of guest virtual ad=
dr */
+    TCGReg addr_reg;        /* reg index for guest virtual addr */
     TCGReg datalo_reg;      /* reg index for low word to be loaded or stor=
ed */
     TCGReg datahi_reg;      /* reg index for high word to be loaded or sto=
red */
     const tcg_insn_unit *raddr;   /* addr of the next IR of qemu_ld/st IR =
*/
@@ -6061,7 +6060,7 @@ static void tcg_out_ld_helper_args(TCGContext *s, con=
st TCGLabelQemuLdst *ldst,
          */
         tcg_out_helper_add_mov(mov, loc + HOST_BIG_ENDIAN,
                                TCG_TYPE_I32, TCG_TYPE_I32,
-                               ldst->addrlo_reg, -1);
+                               ldst->addr_reg, -1);
         tcg_out_helper_load_slots(s, 1, mov, parm);
=20
         tcg_out_helper_load_imm(s, loc[!HOST_BIG_ENDIAN].arg_slot,
@@ -6069,7 +6068,7 @@ static void tcg_out_ld_helper_args(TCGContext *s, con=
st TCGLabelQemuLdst *ldst,
         next_arg +=3D 2;
     } else {
         nmov =3D tcg_out_helper_add_mov(mov, loc, TCG_TYPE_I64, s->addr_ty=
pe,
-                                      ldst->addrlo_reg, ldst->addrhi_reg);
+                                      ldst->addr_reg, -1);
         tcg_out_helper_load_slots(s, nmov, mov, parm);
         next_arg +=3D nmov;
     }
@@ -6226,21 +6225,22 @@ static void tcg_out_st_helper_args(TCGContext *s, c=
onst TCGLabelQemuLdst *ldst,
=20
     /* Handle addr argument. */
     loc =3D &info->in[next_arg];
-    if (TCG_TARGET_REG_BITS =3D=3D 32 && s->addr_type =3D=3D TCG_TYPE_I32)=
 {
+    tcg_debug_assert(s->addr_type <=3D TCG_TYPE_REG);
+    if (TCG_TARGET_REG_BITS =3D=3D 32) {
         /*
-         * 32-bit host with 32-bit guest: zero-extend the guest address
+         * 32-bit host (and thus 32-bit guest): zero-extend the guest addr=
ess
          * to 64-bits for the helper by storing the low part.  Later,
          * after we have processed the register inputs, we will load a
          * zero for the high part.
          */
         tcg_out_helper_add_mov(mov, loc + HOST_BIG_ENDIAN,
                                TCG_TYPE_I32, TCG_TYPE_I32,
-                               ldst->addrlo_reg, -1);
+                               ldst->addr_reg, -1);
         next_arg +=3D 2;
         nmov +=3D 1;
     } else {
         n =3D tcg_out_helper_add_mov(mov, loc, TCG_TYPE_I64, s->addr_type,
-                                   ldst->addrlo_reg, ldst->addrhi_reg);
+                                   ldst->addr_reg, -1);
         next_arg +=3D n;
         nmov +=3D n;
     }
@@ -6288,7 +6288,7 @@ static void tcg_out_st_helper_args(TCGContext *s, con=
st TCGLabelQemuLdst *ldst,
         g_assert_not_reached();
     }
=20
-    if (TCG_TARGET_REG_BITS =3D=3D 32 && s->addr_type =3D=3D TCG_TYPE_I32)=
 {
+    if (TCG_TARGET_REG_BITS =3D=3D 32) {
         /* Zero extend the address by loading a zero for the high part. */
         loc =3D &info->in[1 + !HOST_BIG_ENDIAN];
         tcg_out_helper_load_imm(s, loc->arg_slot, TCG_TYPE_I32, 0, parm);
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index 45dc2c649b..6f383c1592 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -1775,7 +1775,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr_reg;
+        ldst->addr_reg =3D addr_reg;
=20
         mask_type =3D (s->page_bits + s->tlb_dyn_max_bits > 32
                      ? TCG_TYPE_I64 : TCG_TYPE_I32);
@@ -1837,7 +1837,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
=20
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr_reg;
+            ldst->addr_reg =3D addr_reg;
=20
             /* tst addr, #mask */
             tcg_out_logicali(s, I3404_ANDSI, 0, TCG_REG_XZR, addr_reg, a_m=
ask);
diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 93a3ccaf66..83f6eb6099 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -1485,7 +1485,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         /* Load cpu->neg.tlb.f[mmu_idx].{mask,table} into {r0,r1}.  */
         QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) !=3D 0);
@@ -1552,7 +1552,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         /* We are expecting alignment to max out at 7 */
         tcg_debug_assert(a_mask <=3D 0xff);
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index b33fe7fe23..cfea4c496d 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -2201,7 +2201,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         if (TCG_TARGET_REG_BITS =3D=3D 64) {
             ttype =3D s->addr_type;
@@ -2257,7 +2257,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         /* jne slow_path */
         jcc =3D tcg_out_cmp(s, TCG_COND_TSTNE, addr, a_mask, true, false);
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.=
c.inc
index 4f32bf3e97..dd67e8f6bc 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -1010,7 +1010,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr_reg;
+        ldst->addr_reg =3D addr_reg;
=20
         tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
         tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
@@ -1055,7 +1055,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
=20
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr_reg;
+            ldst->addr_reg =3D addr_reg;
=20
             /*
              * Without micro-architecture details, we don't know which of
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index 153ce1f3c3..d744b853cd 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -1244,7 +1244,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx].  */
         tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP0, TCG_AREG0, mask_off);
@@ -1309,7 +1309,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
=20
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr;
+            ldst->addr_reg =3D addr;
=20
             /* We are expecting a_bits to max out at 7, much lower than AN=
DI. */
             tcg_debug_assert(a_bits < 16);
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 74b93f4b57..2d16807ec7 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2473,7 +2473,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr;
+        ldst->addr_reg =3D addr;
=20
         /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx].  */
         tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, mask_off);
@@ -2577,7 +2577,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
             ldst =3D new_ldst_label(s);
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr;
+            ldst->addr_reg =3D addr;
=20
             /* We are expecting a_bits to max out at 7, much lower than AN=
DI. */
             tcg_debug_assert(a_bits < 16);
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index 55a3398712..689fbea0df 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -1727,7 +1727,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, TCGReg *pbase,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr_reg;
+        ldst->addr_reg =3D addr_reg;
=20
         init_setting_vtype(s);
=20
@@ -1790,7 +1790,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, TCGReg *pbase,
             ldst =3D new_ldst_label(s);
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr_reg;
+            ldst->addr_reg =3D addr_reg;
=20
             init_setting_vtype(s);
=20
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index 6786e7b316..b2e1cd60ff 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -1920,7 +1920,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr_reg;
+        ldst->addr_reg =3D addr_reg;
=20
         tcg_out_sh64(s, RSY_SRLG, TCG_TMP0, addr_reg, TCG_REG_NONE,
                      s->page_bits - CPU_TLB_ENTRY_BITS);
@@ -1974,7 +1974,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
             ldst =3D new_ldst_label(s);
             ldst->is_ld =3D is_ld;
             ldst->oi =3D oi;
-            ldst->addrlo_reg =3D addr_reg;
+            ldst->addr_reg =3D addr_reg;
=20
             tcg_debug_assert(a_mask <=3D 0xffff);
             tcg_out_insn(s, RI, TMLL, addr_reg, a_mask);
diff --git a/tcg/sparc64/tcg-target.c.inc b/tcg/sparc64/tcg-target.c.inc
index ea0a3b8692..527af5665d 100644
--- a/tcg/sparc64/tcg-target.c.inc
+++ b/tcg/sparc64/tcg-target.c.inc
@@ -1127,7 +1127,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
     ldst =3D new_ldst_label(s);
     ldst->is_ld =3D is_ld;
     ldst->oi =3D oi;
-    ldst->addrlo_reg =3D addr_reg;
+    ldst->addr_reg =3D addr_reg;
     ldst->label_ptr[0] =3D s->code_ptr;
=20
     /* bne,pn %[xi]cc, label0 */
@@ -1147,7 +1147,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext=
 *s, HostAddress *h,
         ldst =3D new_ldst_label(s);
         ldst->is_ld =3D is_ld;
         ldst->oi =3D oi;
-        ldst->addrlo_reg =3D addr_reg;
+        ldst->addr_reg =3D addr_reg;
         ldst->label_ptr[0] =3D s->code_ptr;
=20
         /* bne,pn %icc, label0 */
--=20
2.43.0