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[Bug target/77345] [7 Regression] Segmentation fault w/ -misel -O1 (and above)
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 25 Nov 2016 11:54:16 +0000
- Subject: [Bug target/77345] [7 Regression] Segmentation fault w/ -misel -O1 (and above)
- Auto-submitted: auto-generated
- References: <bug-77345-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77345
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |segher at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This seems to be infinite recursion in subst/combine_simplify_rtx on
expression:
(plus:SI (ltu:SI (plus:SI (if_then_else:SI (eq (reg:CC 180)
(const_int 0 [0]))
(reg:SI 155 [ _1+-3 ])
(reg:SI 175 [ vu+4 ]))
(reg:SI 155 [ _1+-3 ]))
(if_then_else:SI (eq (reg:CC 180)
(const_int 0 [0]))
(reg:SI 155 [ _1+-3 ])
(reg:SI 175 [ vu+4 ])))
(reg:SI 174 [ vu ]))
The subst is from (pc) to (pc), i.e. simplification.