[Bug rtl-optimization/55838] [4.6/4.7/4.8 Regression] ICE in extract_insn (unrecognizable insn) with -O -funroll-loops
steven at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Jan 1 19:53:00 GMT 2013
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55838
--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2013-01-01 19:52:48 UTC ---
... but actually it looks like it exists even before that:
(gdb) p debug_rtx(desc->niter_expr)
(udiv:QI (minus:QI (const_int -126 [0xffffffffffffff82])
(subreg:QI (reg:SI 113 [ ivtmp.14 ]) 0))
(const_int 129 [0x81]))
That's a nonsense QImode udiv from loop-iv.
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