Re: [patch RFC] SH: Use FRAME_GROWS_DOWNWARD

[Joern RENNECKE <joern dot rennecke at st dot com>]

Kaz Kojima wrote:

>    
>
> CSiBE 2.1.0 Runtime result (sec):
>
> 		original compiler		patched compiler
> 		no-omit-fp	omit-fp		no-omit-fp	omit-fp	
> bzip2.c 	48.3267		47.03		44.1133		43.6933	
> bzip2.d 	10.1933		10.22		10.2633		10.24	
> bzip2recover 	5.01667		4.93		5.01667		4.94	
> vam.fact 	1.64667		1.67667		1.65333		1.66333	
> vam.fib 	1.74667		1.76333		1.76333		1.75667	
> vam.test2 	0.24		0.233333	0.233333	0.23	
> flex		15.1033		15.0367		15.08		15.06	
> jikespg 	1.67667		1.64333		(*)		(*)
> cjpeg2		3.63333		3.59		3.64		3.48	
> cjpeg0		0.583333	0.58		0.586667	0.56	
> cjpeg1		3.67		3.58667		3.61333		3.55667	
> djpeg0		0.386667	0.383333	0.39		0.386667
> djpeg1		2.81333		2.58		2.63333		2.42667	
> djpeg2		2.77		2.63333		2.67333		2.48667	
> jpegtran0 	0.313333	0.296667	0.303333	0.276667
> jpegtran1 	2.15667		2.11333		2.08333		2.04	
> jpegtran2 	5.37		5.22		4.77333		4.76333	
> png2pnm0 	1.12667		1.08333		1.09		1.06333	
> png2pnm1 	7.98667		7.62		8.02667		7.72667	
> pnm2png0 	7.18		7.14333		7.16667		7.14667	
> pnm2png1 	40.42		40.2033		40.2433		40.12	
> dehex0		1.77667		1.75		1.77667		1.78	
> dehex1		11.64		11.6633		11.66		11.54	
> enhex0		5.52667		5.53333		5.53		5.54333	
> enhex1		36.31		36.18		36.3533		36.1767	
> minigzip 	6.34667		6.19		6.16333		6.06667	
> minigzip0 	55.0333		53.3133		53.1767		51.97
>
> (*) runtime error with
> *** glibc detected *** double free or corruption (out): 0x004a4600 ***
>
> Regards,
> 	kaz
>  
That sounds promising.  If I replace the missing numbers with 1.68, awk 
calculates about 1.8%
improvement on the geometric mean:
bash-2.05b$ cat tmp|awk 'BEGIN {FS=" ";prod = 1 }  {prod*=$2;num++} END 
{print exp(log(prod)/num)}'
3.96185
bash-2.05b$ cat tmp|awk 'BEGIN {FS=" ";prod = 1 }  {prod*=$3;num++} END 
{print exp(log(prod)/num)}'
3.88543
bash-2.05b$ cat tmp|awk 'BEGIN {FS=" ";prod = 1 }  {prod*=$4;num++} END 
{print exp(log(prod)/num)}'
3.8922
bash-2.05b$ cat tmp|awk 'BEGIN {FS=" ";prod = 1 }  {prod*=$5;num++} END 
{print exp(log(prod)/num)}'
3.81453

However, the jikespg failure needs to be investigated.  Is this a latent 
bug in the benchmark,
or is it a compiler bug?