https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113615
--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Thomas Schwinge <tschwi...@gcc.gnu.org>: https://gcc.gnu.org/g:641b50bffc06123853a1421c0dd5a318c353fd85 commit r14-9068-g641b50bffc06123853a1421c0dd5a318c353fd85 Author: Thomas Schwinge <tschwi...@baylibre.com> Date: Fri Feb 16 13:04:00 2024 +0100 GCN: Conditionalize 'define_expand "reduc_<fexpander>_scal_<mode>"' on '!TARGET_RDNA2_PLUS' [PR113615] On top of commit c7ec7bd1c6590cf4eed267feab490288e0b8d691 "amdgcn: add -march=gfx1030 EXPERIMENTAL" conditionalizing 'define_expand "reduc_<reduc_op>_scal_<mode>"' on '!TARGET_RDNA2' (later: '!TARGET_RDNA2_PLUS'), we then did similar in commit 7cc2262ec9a410dc56d1c1c6b950c922e14f621d "gcn/gcn-valu.md: Disable fold_left_plus for TARGET_RDNA2_PLUS [PR113615]" to conditionalize 'define_expand "fold_left_plus_<mode>"' on '!TARGET_RDNA2_PLUS', but I found we also need to conditionalize the related 'define_expand "reduc_<fexpander>_scal_<mode>"' on '!TARGET_RDNA2_PLUS', to avoid ICEs like: [...]/gcc.dg/vect/pr108608.c: In function 'foo': [...]/gcc.dg/vect/pr108608.c:9:1: error: unrecognizable insn: (insn 34 33 35 2 (set (reg:V64DF 723) (unspec:V64DF [ (reg:V64DF 690 [ vect_m_11.20 ]) (const_int 1 [0x1]) ] UNSPEC_MOV_DPP_SHR)) -1 (nil)) during RTL pass: vregs Similar for 'gcc.dg/vect/vect-fmax-2.c', 'gcc.dg/vect/vect-fmin-2.c', and 'UNSPEC_SMAX_DPP_SHR' for 'gcc.dg/vect/vect-fmax-1.c', and 'UNSPEC_SMIN_DPP_SHR' for 'gcc.dg/vect/vect-fmin-1.c', when running 'vect.exp' for 'check-gcc-c'. PR target/113615 gcc/ * config/gcn/gcn-valu.md (define_expand "reduc_<fexpander>_scal_<mode>"): Conditionalize on '!TARGET_RDNA2_PLUS'. * config/gcn/gcn.cc (gcn_expand_dpp_shr_insn) (gcn_expand_reduc_scalar): 'gcc_checking_assert (!TARGET_RDNA2_PLUS);'.
