As of this fix (yes, I know it was some time ago - I've been busy), the m32c-elf build fails building the target libiberty:
./cc1 -fpreprocessed regex.i -quiet -dumpbase regex.c -mcpu=m32cm \ -auxbase-strip regex.o -g -O2 -W -Wall -Wwrite-strings -Wc++-compat \ -Wstrict-prototypes -pedantic -version -o regex.s In file included from ../../../../gcc/libiberty/regex.c:639: ../../../../gcc/libiberty/regex.c: In function 'byte_re_match_2_internal': ../../../../gcc/libiberty/regex.c:7481: internal compiler error: in gen_add2_insn, at optabs.c:4733 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. cc1.r144405.20090224-060515 - failed The problem is, you *can't* treat pointers and integers the same on m32c, as there is no integral type (16-bit? 32?) the same size as a pointer (24 bits). Pointer math and pointer compatisons need to be done with pointer types. [ gdb ] where #0 fancy_abort (file=0x87e22a8 "../../gcc/gcc/optabs.c", line=4746, function=0x87e28c9 "gen_add2_insn") at ../../gcc/gcc/diagnostic.c:724 #1 0x0837ddc5 in gen_add2_insn (x=0xb7993bb0, y=0xb7993b80) at ../../gcc/gcc/optabs.c:4745 #2 0x083f9df7 in gen_reload (out=0xb7993bb0, in=0xb7d086a8, opnum=0, type=RELOAD_FOR_INPUT) at ../../gcc/gcc/reload1.c:8248 #3 0x083fa959 in emit_input_reload_insns () at ../../gcc/gcc/reload1.c:7217 #4 do_input_reload (chain=<value optimized out>, rl=0x8896fcc, j=1) at ../../gcc/gcc/reload1.c:7511 #5 0x083ff278 in emit_reload_insns () at ../../gcc/gcc/reload1.c:7702 #6 reload_as_needed (live_known=1) at ../../gcc/gcc/reload1.c:4217 #7 0x084040f9 in reload (first=0xb7c8cd80, global=1) at ../../gcc/gcc/reload1.c:1169 #8 0x0832f799 in ira (f=<value optimized out>) at ../../gcc/gcc/ira.c:3239 #9 0x08331b50 in rest_of_handle_ira () at ../../gcc/gcc/ira.c:3309 #10 0x08396aed in execute_one_pass (pass=0x884a200) at ../../gcc/gcc/passes.c:1290 #11 0x08396d5c in execute_pass_list (pass=0x884a200) at ../../gcc/gcc/passes.c:1339 #12 0x08396d6f in execute_pass_list (pass=0x886bce0) at ../../gcc/gcc/passes.c:1340 #13 0x084aca80 in tree_rest_of_compilation (fndecl=0xb7fb5400) at ../../gcc/gcc/tree-optimize.c:437 #14 0x0860d3e2 in cgraph_expand_function (node=0xb7e84680) at ../../gcc/gcc/cgraphunit.c:1048 #15 0x0860f23f in cgraph_expand_all_functions () at ../../gcc/gcc/cgraphunit.c:1107 #16 cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:1312 #17 0x080a5c0b in c_write_global_declarations () at ../../gcc/gcc/c-decl.c:8174 #18 0x0845817b in compile_file () at ../../gcc/gcc/toplev.c:989 #19 do_compile () at ../../gcc/gcc/toplev.c:2243 #20 toplev_main (argc=20, argv=0xbffff974) at ../../gcc/gcc/toplev.c:2278 #21 0x081266e2 in main (argc=Cannot access memory at address 0x23 ) at ../../gcc/gcc/main.c:35 [ gdb ] call debug_reload(rl) Reload 0: reload_in (HI) = (reg:HI 377 [ D.9641 ]) A_REGS, RELOAD_FOR_INPUT_ADDRESS (opnum = 0) reload_in_reg: (reg:HI 377 [ D.9641 ]) reload_reg_rtx: (reg:HI 4 a0) Reload 1: reload_in (PSI) = (plus:PSI (reg:HI 377 [ D.9641 ]) (const_int 4 [0x4])) A_REGS, RELOAD_FOR_INPUT (opnum = 0), inc by 4 reload_in_reg: (plus:PSI (reg:HI 377 [ D.9641 ]) (const_int 4 [0x4])) reload_reg_rtx: (reg:PSI 4 a0) Reload 2: reload_in (PSI) = (mem/f:PSI (reg/f:PSI 5 a1 [995]) [7 S4 A8]) A_HI_MEM_REGS, RELOAD_FOR_INPUT (opnum = 1), optional reload_in_reg: (mem/f:PSI (reg/f:PSI 5 a1 [995]) [7 S4 A8]) Note "(plus:PSI (reg:HI) (const_int))" - the mode conflict between PSI and HI causes problems. Can we somehow make this fix contingent on ports that have suitable integral modes?
