Re: [Qemu-devel] [PATCH] tcg: Remove temp_buf

["Andreas Färber" <afaerber@suse.de>]

Am 19.04.2013 14:11, schrieb Andreas Färber:
> Hi,
> 
> Am 19.04.2013 10:27, schrieb Richard Henderson:
>> All targets have been converted to allocating space for temporaries
>> on the stack.  No need to allocate space within the CPU_COMMON block.
>>
>> Signed-off-by: Richard Henderson <rth@twiddle.net>
>> ---
>> This depends on my tcg-arm patch set that's still outstanding.
> 
> My tree still has exactly one user in tcg/arm/, so once that disappears
> feel free to add my Reviewed-by. Thanks for helping clean this up!
> 
> One question...
> 
>>
>>
>> r~
>> ---
>>  include/exec/cpu-defs.h | 2 --
>>  1 file changed, 2 deletions(-)
>>
>> diff --git a/include/exec/cpu-defs.h b/include/exec/cpu-defs.h
>> index d8c64e9..41f5b32 100644
>> --- a/include/exec/cpu-defs.h
>> +++ b/include/exec/cpu-defs.h
>> @@ -152,8 +152,6 @@ typedef struct CPUWatchpoint {
>>                                       memory was accessed */             \
>>      CPU_COMMON_TLB                                                      \
>>      struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE];           \
>> -    /* buffer for temporaries in the code generator */                  \
>> -    long temp_buf[CPU_TEMP_BUF_NLONGS];                                 \
> 
> Could CPU_TEMP_BUF_NLONGS be removed, too?

More precisely, seeing that all targets actually still use it despite in
most cases not actually accessing temp_buf, can you rename it to
TCG_TEMP_STACK_NLONGS and move it to some TCG header as a follow-up please?

Andreas

>>                                                                          \
>>      int64_t icount_extra; /* Instructions until next timer event.  */   \
>>      /* Number of cycles left, with interrupt flag in high bit.          \
>>

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