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added local temporaries

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4576 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-05-25 17:24:00 +00:00
parent 98fc56145e
commit 641d5fbe6b
2 changed files with 103 additions and 45 deletions
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22
tcg/tcg.h
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@ -189,6 +189,9 @@ typedef struct TCGTemp {
unsigned int fixed_reg:1;
unsigned int mem_coherent:1;
unsigned int mem_allocated:1;
unsigned int temp_local:1; /* If true, the temp is saved accross
basic blocks. Otherwise, it is not
preserved accross basic blocks. */
unsigned int temp_allocated:1; /* never used for code gen */
/* index of next free temp of same base type, -1 if end */
int next_free_temp;
@ -212,11 +215,8 @@ struct TCGContext {
TCGTemp *temps; /* globals first, temps after */
int nb_globals;
int nb_temps;
int first_free_temp[TCG_TYPE_COUNT]; /* index of free temps, -1 if none */
/* constant indexes (end of temp array) */
int const_start;
int const_end;
/* index of free temps, -1 if none */
int first_free_temp[TCG_TYPE_COUNT * 2];
/* goto_tb support */
uint8_t *code_buf;
@ -224,8 +224,10 @@ struct TCGContext {
uint16_t *tb_next_offset;
uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */
/* liveness analysis */
uint16_t *op_dead_iargs; /* for each operation, each bit tells if the
corresponding input argument is dead */
/* tells in which temporary a given register is. It does not take
into account fixed registers */
int reg_to_temp[TCG_TARGET_NB_REGS];
@ -305,7 +307,15 @@ TCGv tcg_global_reg2_new_hack(TCGType type, int reg1, int reg2,
const char *name);
TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
const char *name);
TCGv tcg_temp_new(TCGType type);
TCGv tcg_temp_new_internal(TCGType type, int temp_local);
static inline TCGv tcg_temp_new(TCGType type)
{
return tcg_temp_new_internal(type, 0);
}
static inline TCGv tcg_temp_local_new(TCGType type)
{
return tcg_temp_new_internal(type, 1);
}
void tcg_temp_free(TCGv arg);
char *tcg_get_arg_str(TCGContext *s, char *buf, int buf_size, TCGv arg);
void tcg_dump_info(FILE *f,