https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82058
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> --- (In reply to Tom de Vries from comment #0) > At r251537, with this patch: > ... > diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md > index d61afcf..a42358d 100644 > --- a/gcc/config/i386/sse.md > +++ b/gcc/config/i386/sse.md > @@ -1741,7 +1741,7 @@ > (set_attr "mode" "<MODE>")]) > > (define_insn "srcp14<mode>_mask" > - [(set (match_operand:VF_128 0 "register_operand" "=v") > + [(set (match_operand:VF_128 0 "register_operand" "=&v") > (vec_merge:VF_128 > (vec_merge:VF_128 > (unspec:VF_128 > ... > Written to make it easy to reproduce an ICE encountered for target gcn on branch gcn for this insn from gcn-valu.md: ... (define_insn "*mov<mode>" [(set (match_operand:VEC_2REG_MODE 0 "register_operand" "=&v") (vec_merge:VEC_2REG_MODE (match_operand:VEC_2REG_MODE 1 "gcn_alu_operand" "0vB") (match_operand:VEC_2REG_MODE 3 "gcn_register_or_unspec_operand" "0U") (match_operand:DI 2 "gcn_exec_reg_operand" "e")))] "!memory_operand (operands[0], VOIDmode) || register_operand (operands[1], VOIDmode)" "v_mov_b32\t%L0, %L1\n\tv_mov_b32\t%H0, %H1" [(set_attr "type" "vop1") (set_attr "mode" "<MODE>")]) ...