[RFC,05/16] tcg: More use of TCGReg where appropriate

diff --git a/tcg/tcg.c b/tcg/tcg.c
index 8fc5588..13dc8f5 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -341,7 +341,7 @@  static inline void tcg_temp_alloc(TCGContext *s, int n)
 }
 
 static int tcg_global_reg_new_internal(TCGContext *s, TCGType type,
-                                       int reg, const char *name)
+                                       TCGReg reg, const char *name)
 {
     TCGTemp *ts;
     int idx;
@@ -362,14 +362,14 @@  static int tcg_global_reg_new_internal(TCGContext *s, TCGType type,
     return idx;
 }
 
-void tcg_set_frame(TCGContext *s, int reg, intptr_t start, intptr_t size)
+void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size)
 {
     s->frame_start = start;
     s->frame_end = start + size;
     s->frame_temp = tcg_global_reg_new_internal(s, TCG_TYPE_PTR, reg, "_frame");
 }
 
-TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name)
+TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name)
 {
     TCGContext *s = &tcg_ctx;
     int idx;
@@ -381,7 +381,7 @@  TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name)
     return MAKE_TCGV_I32(idx);
 }
 
-TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name)
+TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name)
 {
     TCGContext *s = &tcg_ctx;
     int idx;
@@ -1550,7 +1550,8 @@  static void dump_regs(TCGContext *s)
 
 static void check_regs(TCGContext *s)
 {
-    int reg, k;
+    TCGReg reg;
+    int k;
     TCGTemp *ts;
     char buf[64];
 
@@ -1603,7 +1604,7 @@  static void temp_allocate_frame(TCGContext *s, int temp)
 }
 
 /* sync register 'reg' by saving it to the corresponding temporary */
-static inline void tcg_reg_sync(TCGContext *s, int reg)
+static inline void tcg_reg_sync(TCGContext *s, TCGReg reg)
 {
     TCGTemp *ts;
     int temp;
@@ -1621,7 +1622,7 @@  static inline void tcg_reg_sync(TCGContext *s, int reg)
 }
 
 /* free register 'reg' by spilling the corresponding temporary if necessary */
-static void tcg_reg_free(TCGContext *s, int reg)
+static void tcg_reg_free(TCGContext *s, TCGReg reg)
 {
     int temp;
 
@@ -1634,9 +1635,10 @@  static void tcg_reg_free(TCGContext *s, int reg)
 }
 
 /* Allocate a register belonging to reg1 & ~reg2 */
-static int tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2)
+static TCGReg tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2)
 {
-    int i, reg;
+    int i;
+    TCGReg reg;
     TCGRegSet reg_ct;
 
     tcg_regset_andnot(reg_ct, reg1, reg2);
@@ -1894,7 +1896,8 @@  static void tcg_reg_alloc_op(TCGContext *s,
                              uint8_t sync_args)
 {
     TCGRegSet allocated_regs;
-    int i, k, nb_iargs, nb_oargs, reg;
+    int i, k, nb_iargs, nb_oargs;
+    TCGReg reg;
     TCGArg arg;
     const TCGArgConstraint *arg_ct;
     TCGTemp *ts;
@@ -2060,7 +2063,8 @@  static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
                               TCGOpcode opc, const TCGArg *args,
                               uint16_t dead_args, uint8_t sync_args)
 {
-    int nb_iargs, nb_oargs, flags, nb_regs, i, reg, nb_params;
+    int nb_iargs, nb_oargs, flags, nb_regs, i, nb_params;
+    TCGReg reg;
     TCGArg arg, func_arg;
     TCGTemp *ts;
     intptr_t stack_offset;
diff --git a/tcg/tcg.h b/tcg/tcg.h
index 16048ca..d69d993 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -394,7 +394,7 @@  typedef struct TCGTemp {
     TCGType base_type;
     TCGType type;
     TCGTempType val_type;
-    int reg;
+    TCGReg reg;
     tcg_target_long val;
     struct TCGTemp *mem_base;
     intptr_t mem_offset;
@@ -539,12 +539,12 @@  void tcg_func_start(TCGContext *s);
 int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
 int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);
 
-void tcg_set_frame(TCGContext *s, int reg, intptr_t start, intptr_t size);
+void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size);
 
 int tcg_global_mem_new_internal(TCGType, TCGv_ptr, intptr_t, const char *);
 
-TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
-TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
+TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name);
+TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name);
 
 TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
 TCGv_i64 tcg_temp_new_internal_i64(int temp_local);