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

middle-end/103193 - avoid canonicalizing <= and >= to == for floats

Browse Source 
This avoids doing aforementioned canoncalization when -ftrapping-math
is in effect and we honor NaNs.

2021-11-15  Richard Biener  <rguenther@suse.de>

	PR middle-end/103193
	* match.pd: Avoid canonicalizing (le/ge @0 @0) to (eq @0 @0)
	with NaNs and -ftrapping-math.
This commit is contained in:
Richard Biener 2021-11-15 12:13:40 +01:00
parent 5bca26742c
commit d9ca2ca381
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/match.pd
View File

@ -4671,7 +4671,10 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
(if (! FLOAT_TYPE_P (TREE_TYPE (@0))
|| ! HONOR_NANS (@0))
{ constant_boolean_node (true, type); }
(if (cmp != EQ_EXPR)
(if (cmp != EQ_EXPR
/* With -ftrapping-math conversion to EQ loses an exception. */
&& (! FLOAT_TYPE_P (TREE_TYPE (@0))
|| ! flag_trapping_math))
(eq @0 @0)))))
(for cmp (ne gt lt)
(simplify