[Bug middle-end/112406] [14 Regression] Several SPECCPU 2017 benchmarks fail with on internal compiler error: in expand_insn, at optabs.cc:8305 after g:01c18f58d37865d5f3bbe93e666183b54ec608c7

[rdapp at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112406

--- Comment #7 from Robin Dapp <rdapp at gcc dot gnu.org> ---
Ah, thanks, I can reproduce this on the cfarm/gcc185.

We don't expand:
vect__ifc__141.81_358 = .COND_ADD (vect_cst__356,
vect_GetImageChannelMoments_M00_0_lsm.74_338, { 1.0e+0, ... },
vect_GetImageChannelMoments_M00_0_lsm.74_338);

because we cannot legitimize the first operand ([1]):
 (reg:VNx16QI 247 [ vect_cst__356 ])
while operand[0] is VNx2DFmode (reg:VNx2DF 248 [ vect__ifc__141.81 ]).

We only check for the lhs type in ifcvt via vectorized_internal_fn_supported_p.
Maybe we need something like ifcvt_can_predicate as well?