[Bug tree-optimization/88055] [9 regression] ICE in extract_insn, at recog.c:2305 on ppc64le

2019-04-19 Thread segher at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88055

Segher Boessenkool  changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #11 from Segher Boessenkool  ---
Fixed.

[Bug tree-optimization/88055] [9 regression] ICE in extract_insn, at recog.c:2305 on ppc64le

2019-04-19 Thread segher at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88055

--- Comment #10 from Segher Boessenkool  ---
Author: segher
Date: Fri Apr 19 16:58:01 2019
New Revision: 270460

URL: https://gcc.gnu.org/viewcvs?rev=270460&root=gcc&view=rev
Log:
tree-call-cdce: If !HONOR_NANS do not make code with NaNs (PR88055)

If we don't HONOR_NANS we should not try to use any unordered
comparison results.  Best case those will just be optimized away;
realistically, they ICE.  For example, the rs6000 backend has some
code that specifically checks we never do this.


PR tree-optimization/88055
* tree-call-cdce.c (comparison_code_if_no_nans): New function.
(gen_one_condition): Use it if !HONOR_NANS.

Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-call-cdce.c