https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81936
--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> --- On Wed, 23 Aug 2017, vries at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81936 > > --- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> --- > (In reply to Tom de Vries from comment #8) > > but found it doesn't work because flag_generate_offload is actually false. > > > > I'm now trying this (code snippet copied from symbol_table::compile), but > > I'm not sure if setting flag_generate_offload is the proper solution, and if > > so, where it should be inserted: > > ... > > diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c > > index e8cc765095d..29a1d038b0e 100644 > > --- a/gcc/cgraphunit.c > > +++ b/gcc/cgraphunit.c > > @@ -2586,6 +2586,10 @@ symbol_table::finalize_compilation_unit (void) > > current_function_decl = NULL; > > set_cfun (NULL); > > > > + /* Offloading requires LTO infrastructure. */ > > + if (!in_lto_p && g->have_offload) > > + flag_generate_offload = 1; > > + > > /* Do not skip analyzing the functions if there were errors, we > > miss diagnostics for following functions otherwise. */ > > > > ... > > That didn't work since g->have_offload is not set yet. Setting it after > analyze_functions does work: > ... > diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c > index e8cc765095d..080451a44df 100644 > --- a/gcc/cgraphunit.c > +++ b/gcc/cgraphunit.c > @@ -2614,6 +2614,10 @@ symbol_table::finalize_compilation_unit (void) > /* Gimplify and lower thunks. */ > analyze_functions (/*first_time=*/false); > > + /* Offloading requires LTO infrastructure. */ > + if (!in_lto_p && g->have_offload) > + flag_generate_offload = 1; > + > if (!seen_error ()) > { > /* Emit early debug for reachable functions, and by consequence, > ... Looks good (moving the setting, not replicating it), also adding the check in dwarf2out.c > And then we run into the next ICE: > ... > libgomp/testsuite/libgomp.c/pr66714.c:17:1: internal compiler error: in > output_loc_operands, at dwarf2out.c:2232 > 0x86f757 output_loc_operands > gcc/dwarf2out.c:2232 > 0x86f757 output_loc_sequence(dw_loc_descr_node*, int) > gcc/dwarf2out.c:2419 > 0x86ff61 output_die > gcc/dwarf2out.c:10038 > 0x86fa0a output_die > gcc/dwarf2out.c:10348 > 0x86fa0a output_die > gcc/dwarf2out.c:10348 > 0x871118 output_comp_unit > gcc/dwarf2out.c:10483 > 0x898408 dwarf2out_early_finish > gcc/dwarf2out.c:30597 > 0x7fe3b8 symbol_table::finalize_compilation_unit() > gcc/cgraphunit.c:2631 > Please submit a full bug report, > ... Shit happens ;) Is that now the offload compiler?
