diff --git a/tcg/aarch64/tcg-target.c b/tcg/aarch64/tcg-target.c
index 661a5af..cee3704 100644
--- a/tcg/aarch64/tcg-target.c
+++ b/tcg/aarch64/tcg-target.c
@@ -982,7 +982,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
     tcg_out_goto(s, (tcg_target_long)lb->raddr);
 }
 
-static void add_qemu_ldst_label(TCGContext *s, int is_ld, int opc,
+static void add_qemu_ldst_label(TCGContext *s, bool is_ld, int opc,
                                 TCGReg data_reg, TCGReg addr_reg,
                                 int mem_index,
                                 uint8_t *raddr, uint8_t *label_ptr)
@@ -1150,7 +1150,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
     s_bits = opc & 3;
     tcg_out_tlb_read(s, addr_reg, s_bits, &label_ptr, mem_index, 1);
     tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg, TCG_REG_X1);
-    add_qemu_ldst_label(s, 1, opc, data_reg, addr_reg,
+    add_qemu_ldst_label(s, true, opc, data_reg, addr_reg,
                         mem_index, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
     tcg_out_qemu_ld_direct(s, opc, data_reg, addr_reg,
@@ -1174,7 +1174,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
 
     tcg_out_tlb_read(s, addr_reg, s_bits, &label_ptr, mem_index, 0);
     tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg, TCG_REG_X1);
-    add_qemu_ldst_label(s, 0, opc, data_reg, addr_reg,
+    add_qemu_ldst_label(s, false, opc, data_reg, addr_reg,
                         mem_index, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
     tcg_out_qemu_st_direct(s, opc, data_reg, addr_reg,
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c
index a65fc65..5a09226 100644
--- a/tcg/arm/tcg-target.c
+++ b/tcg/arm/tcg-target.c
@@ -1253,7 +1253,7 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGReg addrlo, TCGReg addrhi,
 /* Record the context of a call to the out of line helper code for the slow
    path for a load or store, so that we can later generate the correct
    helper code.  */
-static void add_qemu_ldst_label(TCGContext *s, int is_ld, TCGMemOp opc,
+static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOp opc,
                                 TCGReg datalo, TCGReg datahi, TCGReg addrlo,
                                 TCGReg addrhi, int mem_index,
                                 uint8_t *raddr, uint8_t *label_ptr)
@@ -1519,7 +1519,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64)
 
     tcg_out_qemu_ld_index(s, opc, datalo, datahi, addrlo, addend);
 
-    add_qemu_ldst_label(s, 1, opc, datalo, datahi, addrlo, addrhi,
+    add_qemu_ldst_label(s, true, opc, datalo, datahi, addrlo, addrhi,
                         mem_index, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
     if (GUEST_BASE) {
@@ -1647,7 +1647,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
     label_ptr = s->code_ptr;
     tcg_out_bl_noaddr(s, COND_NE);
 
-    add_qemu_ldst_label(s, 0, opc, datalo, datahi, addrlo, addrhi,
+    add_qemu_ldst_label(s, false, opc, datalo, datahi, addrlo, addrhi,
                         mem_index, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
     if (GUEST_BASE) {
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index f832282..0c2347c 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -1244,7 +1244,7 @@ static inline void tcg_out_tlb_load(TCGContext *s, TCGReg addrlo, TCGReg addrhi,
  * Record the context of a call to the out of line helper code for the slow path
  * for a load or store, so that we can later generate the correct helper code
  */
-static void add_qemu_ldst_label(TCGContext *s, int is_ld, TCGMemOp opc,
+static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOp opc,
                                 TCGReg datalo, TCGReg datahi,
                                 TCGReg addrlo, TCGReg addrhi,
                                 int mem_index, uint8_t *raddr,
@@ -1554,7 +1554,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64)
     tcg_out_qemu_ld_direct(s, datalo, datahi, TCG_REG_L1, 0, 0, opc);
 
     /* Record the current context of a load into ldst label */
-    add_qemu_ldst_label(s, 1, opc, datalo, datahi, addrlo, addrhi,
+    add_qemu_ldst_label(s, true, opc, datalo, datahi, addrlo, addrhi,
                         mem_index, s->code_ptr, label_ptr);
 #else
     {
@@ -1685,7 +1685,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
     tcg_out_qemu_st_direct(s, datalo, datahi, TCG_REG_L1, 0, 0, opc);
 
     /* Record the current context of a store into ldst label */
-    add_qemu_ldst_label(s, 0, opc, datalo, datahi, addrlo, addrhi,
+    add_qemu_ldst_label(s, false, opc, datalo, datahi, addrlo, addrhi,
                         mem_index, s->code_ptr, label_ptr);
 #else
     {
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index dc2c2df..06bedd9 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -524,7 +524,7 @@ static void tcg_out_call (TCGContext *s, tcg_target_long arg, int const_arg,
 #if defined(CONFIG_SOFTMMU)
 
 static void add_qemu_ldst_label (TCGContext *s,
-                                 int is_ld,
+                                 bool is_ld,
                                  TCGMemOp opc,
                                  int data_reg,
                                  int data_reg2,
@@ -720,7 +720,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64)
         break;
     }
 #ifdef CONFIG_SOFTMMU
-    add_qemu_ldst_label(s, 1, opc, datalo, datahi, addrlo,
+    add_qemu_ldst_label(s, true, opc, datalo, datahi, addrlo,
                         addrhi, mem_index, s->code_ptr, label_ptr);
 #endif
 }
@@ -779,7 +779,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
     }
 
 #ifdef CONFIG_SOFTMMU
-    add_qemu_ldst_label(s, 0, opc, datalo, datahi, addrlo, addrhi,
+    add_qemu_ldst_label(s, false, opc, datalo, datahi, addrlo, addrhi,
                         mem_index, s->code_ptr, label_ptr);
 #endif
 }
diff --git a/tcg/tcg-be-ldst.h b/tcg/tcg-be-ldst.h
index 284db0c..ad94c0c 100644
--- a/tcg/tcg-be-ldst.h
+++ b/tcg/tcg-be-ldst.h
@@ -24,7 +24,7 @@
 #define TCG_MAX_QEMU_LDST       640
 
 typedef struct TCGLabelQemuLdst {
-    int is_ld:1;            /* qemu_ld: 1, qemu_st: 0 */
+    bool is_ld:1;           /* qemu_ld: true, qemu_st: false */
     TCGMemOp opc:4;
     TCGReg addrlo_reg;      /* reg index for low word of guest virtual addr */
     TCGReg addrhi_reg;      /* reg index for high word of guest virtual addr */
