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[Bug rtl-optimization/84164] [8 Regression] ICE: in elimination_costs_in_insn, at reload1.c:3633 at -O1
- From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 01 Feb 2018 12:19:52 +0000
- Subject: [Bug rtl-optimization/84164] [8 Regression] ICE: in elimination_costs_in_insn, at reload1.c:3633 at -O1
- Auto-submitted: auto-generated
- References: <bug-84164-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84164
--- Comment #2 from ktkachov at gcc dot gnu.org ---
We encounter an unrecognizable insn:
(insn 59 58 43 7 (set (reg:DI 124)
(rotatert:DI (reg:DI 125 [ c ])
(subreg:QI (and:SI (reg:SI 128)
(const_int 65535 [0xffff])) 0))) "ice.c":8 -1
It comes from the *aarch64_reg_<mode>3_neg_mask2 splitter. Need to figure out
what went wrong there