tcg: Add temp_subindex to TCGTemp

Record the location of a TCGTemp within a larger object.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/tcg/tcg.h

@@ -456,6 +456,7 @@ typedef struct TCGTemp {
     unsigned int mem_coherent:1;
     unsigned int mem_allocated:1;
     unsigned int temp_allocated:1;
+    unsigned int temp_subindex:1;
 
     int64_t val;
     struct TCGTemp *mem_base;

tcg/tcg.c

@@ -928,6 +928,7 @@ TCGTemp *tcg_global_mem_new_internal(TCGType type, TCGv_ptr base,
         ts2->mem_allocated = 1;
         ts2->mem_base = base_ts;
         ts2->mem_offset = offset + (1 - bigendian) * 4;
+        ts2->temp_subindex = 1;
         pstrcpy(buf, sizeof(buf), name);
         pstrcat(buf, sizeof(buf), "_1");
         ts2->name = strdup(buf);
@@ -974,6 +975,7 @@ TCGTemp *tcg_temp_new_internal(TCGType type, bool temp_local)
             ts2->base_type = TCG_TYPE_I64;
             ts2->type = TCG_TYPE_I32;
             ts2->temp_allocated = 1;
+            ts2->temp_subindex = 1;
             ts2->kind = kind;
         } else {
             ts->base_type = type;
@@ -1092,6 +1094,7 @@ TCGTemp *tcg_constant_internal(TCGType type, int64_t val)
             ts2->type = TCG_TYPE_I32;
             ts2->kind = TEMP_CONST;
             ts2->temp_allocated = 1;
+            ts2->temp_subindex = 1;
             ts2->val = val >> 32;
         } else {
             ts->base_type = type;