FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR libfortran/37754 (READ I/O Performance regression from 4.3 to 4.4/4.5)

Browse source 
2009-05-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/37754
	* io/write_float.def: Simplify format calculation.

From-SVN: r147725
This commit is contained in:
Jerry DeLisle 2009-05-20 00:16:38 +00:00
parent 5cfd5d9b8f
commit 3a546d4d9b
2 changed files with 9 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
libgfortran/ChangeLog
View file

@ -1,3 +1,8 @@
2009-05-19 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/37754
* io/write_float.def: Simplify format calculation.
2009-05-07 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
PR fortran/22423

9
libgfortran/io/write_float.def
View file

@ -603,7 +603,7 @@ output_float_FMT_G_ ## x (st_parameter_dt *dtp, const fnode *f, \
int d = f->u.real.d;\
int w = f->u.real.w;\
fnode *newf;\
GFC_REAL_ ## x exp_d;\
GFC_REAL_ ## x rexp_d;\
int low, high, mid;\
int ubound, lbound;\
char *p;\
@ -612,8 +612,8 @@ output_float_FMT_G_ ## x (st_parameter_dt *dtp, const fnode *f, \
save_scale_factor = dtp->u.p.scale_factor;\
newf = (fnode *) get_mem (sizeof (fnode));\
\
exp_d = calculate_exp_ ## x (d);\
if ((m > 0.0 && m < 0.1 - 0.05 / exp_d) || (m >= exp_d - 0.5 ) ||\
rexp_d = calculate_exp_ ## x (-d);\
if ((m > 0.0 && m < 0.1 - 0.05 * rexp_d) || (rexp_d * (m + 0.5) >= 1.0) ||\
((m == 0.0) && !(compile_options.allow_std & GFC_STD_F2003)))\
{ \
newf->format = FMT_E;\
@ -635,8 +635,7 @@ output_float_FMT_G_ ## x (st_parameter_dt *dtp, const fnode *f, \
GFC_REAL_ ## x temp;\
mid = (low + high) / 2;\
\
temp = (calculate_exp_ ## x (mid) - \
5 * calculate_exp_ ## x (mid - d - 1)) / 10;\
temp = (calculate_exp_ ## x (mid - 1) * (1 - 0.5 * rexp_d));\
\
if (m < temp)\
{ \