OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR middle-end/82123 (spurious -Wformat-overflow warning for converted vars)

Browse Source 
PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c (sprintf_dom_walker::handle_gimple_call): Query
	the EVRP range analyzer for range data rather than using global data.

From-SVN: r257853
This commit is contained in:
Jeff Law 2018-02-20 11:53:29 -07:00 committed by Jeff Law
parent aa67d03c30
commit c368450674
2 changed files with 9 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
gcc/ChangeLog
View File

@ -3,6 +3,8 @@
PR middle-end/82123
PR tree-optimization/81592
PR middle-end/79257
* gimple-ssa-sprintf.c (sprintf_dom_walker::handle_gimple_call): Query
the EVRP range analyzer for range data rather than using global data.
* gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and
gimple-ssa-evrp-analyze.h
(class sprintf_dom_walker): Add after_dom_children member function.

17
gcc/gimple-ssa-sprintf.c
View File

@ -3903,16 +3903,13 @@ sprintf_dom_walker::handle_gimple_call (gimple_stmt_iterator *gsi)
/* Try to determine the range of values of the argument
and use the greater of the two at level 1 and the smaller
of them at level 2. */
wide_int min, max;
enum value_range_type range_type
= get_range_info (size, &min, &max);
if (range_type == VR_RANGE)
{
dstsize
= (warn_level < 2
? wi::fits_uhwi_p (max) ? max.to_uhwi () : max.to_shwi ()
: wi::fits_uhwi_p (min) ? min.to_uhwi () : min.to_shwi ());
}
value_range *vr = evrp_range_analyzer.get_value_range (size);
if (vr->type == VR_RANGE
&& TREE_CODE (vr->min) == INTEGER_CST
&& TREE_CODE (vr->max) == INTEGER_CST)
dstsize = (warn_level < 2
? TREE_INT_CST_LOW (vr->max)
: TREE_INT_CST_LOW (vr->min));
/* The destination size is not constant. If the function is
bounded (e.g., snprintf) a lower bound of zero doesn't