Mainline currently doesn't bootstrap on mips-sgi-irix6.5 due to an ICE while compiling mips-sgi-irix6.5/64/libgcc/_powitf2.o at stage 1. This happens, afaict, with any use of the TF mode with either -mabi=64 or -mabi=n32:
$ cat foo.i void __powitf2 (float x __attribute__ ((mode (TF)))) {} $ /usr/people/francois/devel/ibin/./gcc/cc1 -fpreprocessed foo.i -quiet zsh: segmentation fault /usr/people/francois/devel/ibin/./gcc/cc1 -fpreprocessed foo.i -quiet The backtrace for the segfault is: Program received signal SIGSEGV, Segmentation fault. 0x104d7d50 in reg_classes_intersect_p (c1=32, c2=MD0_REG) at ../../trunk/gcc/regclass.c:2481 2481 { (gdb) where #0 0x104d7d50 in reg_classes_intersect_p (c1=32, c2=MD0_REG) at ../../trunk/gcc/regclass.c:2481 #1 0x102323cc in mips_cannot_change_mode_class (from=TFmode, to=DImode, class=FP_REGS) at ../../trunk/gcc/config/mips/mips.c:9346 #2 0x10823a38 in simplify_subreg (outermode=DImode, op=0x40b4c80, innermode=TFmode, byte=0) at ../../trunk/gcc/simplify-rtx.c:5014 #3 0x10824968 in simplify_gen_subreg (outermode=DImode, op=0x40b4c80, innermode=TFmode, byte=0) at ../../trunk/gcc/simplify-rtx.c:5211 #4 0x1027a700 in operand_subword (op=0x40b4c80, offset=0, validate_address=1, mode=TFmode) at ../../trunk/gcc/emit-rtl.c:1425 #5 0x1027a76c in operand_subword_force (op=0x40b4c80, offset=0, mode=TFmode) at ../../trunk/gcc/emit-rtl.c:1438 #6 0x10337484 in emit_move_multi_word (mode=TFmode, x=0x4c84200, y=0x40b4c80) at ../../trunk/gcc/expr.c:3275 #7 0x10337980 in emit_move_insn_1 (x=0x4c84200, y=0x40b4c80) at ../../trunk/gcc/expr.c:3347 #8 0x10337dc0 in emit_move_insn (x=0x4c84200, y=0x40b4c80) at ../../trunk/gcc/expr.c:3407 #9 0x102b4894 in copy_to_reg (x=0x40b4c80) at ../../trunk/gcc/explow.c:617 #10 0x1027a7cc in operand_subword_force (op=0x40b4c80, offset=0, mode=TFmode) at ../../trunk/gcc/emit-rtl.c:1448 I'm keeping the build tree so that I can investigate more if needed, please tell me what to do. -- Summary: Bootstrap broken on mips-sgi-irix6.5 Product: gcc Version: 4.3.0 Status: UNCONFIRMED Keywords: build Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: fxcoudert at gcc dot gnu dot org GCC build triplet: mips-sgi-irix6.5 GCC host triplet: mips-sgi-irix6.5 GCC target triplet: mips-sgi-irix6.5 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33635