[Bug c++/14576] New: ICE in libiberty when building gcc-3.4 for arm-elf

[rob at cobbleware dot com]

Please forgive me if this is a dup of 14166, 14302, 14558, or anything else. I 
don't think it is... 
 
When building a cross-compiler with gcc-3.4 snapshots (I only have 20040303 
and 20040310), there is an ICE when compiling at -O3. The ICE does not occur 
at -O2, nor does it happen in gcc-3.3.3 release. 
 
I have a symlink to the newlib (1.12.0) directory in the gcc source base 
directory. "build" directory is also in the gcc source base directory. Build 
compiler is gcc-3.3.3. 
 
Command line is: 
CFLAGS="-O3 -pipe" ../configure --prefix=/usr --target=arm-elf 
--enable-languages=c,c++ --with-newlib --disable-multilib --with-gnu-ld 
--with-gnu-as && make 
 
Relevant output is: 
 
/home/rfbrown/build/gcc-3.4-20040310/build/gcc/xgcc 
-B/home/rfbrown/build/gcc-3.4-20040310/build/gcc/ -nostdinc 
-B/home/rfbrown/build/gcc-3.4-20040310/build/arm-elf/newlib/ 
-isystem /home/rfbrown/build/gcc-3.4-20040310/build/arm-elf/newlib/targ-include 
-isystem /home/rfbrown/build/gcc-3.4-20040310/newlib/libc/include 
-B/usr/arm-elf/bin/ -B/usr/arm-elf/lib/ -isystem /usr/arm-elf/include 
-isystem /usr/arm-elf/sys-include -c -DHAVE_CONFIG_H -O2 -O3 -pipe -I. 
-I../../../libiberty/../include  -W -Wall -Wtraditional 
-pedantic ../../../libiberty/cp-demangle.c -o cp-demangle.o 
../../../libiberty/cp-demangle.c: In function `d_print_comp': 
../../../libiberty/cp-demangle.c:3438: error: insn does not satisfy its 
constraints: 
(insn:HI 4207 13052 13051 279 ../../../libiberty/cp-demangle.c:3191 (set 
(mem/s:SI (post_modify:SI (reg:SI 1 r1) 
                (plus:SI (reg:SI 1 r1) 
                    (const_int 16 [0x10]))) [55 <variable>.next+0 S4 A32]) 
        (reg:SI 2 r2)) 125 {*arm_movsi_insn} (insn_list:REG_DEP_ANTI 4160 
(insn_list:REG_DEP_ANTI 4155 (insn_list:REG_DEP_OUTPUT 4199 
(insn_list:REG_DEP_ANTI 4198 (nil))))) 
    (expr_list:REG_DEAD (reg:SI 2 r2) 
        (expr_list:REG_INC (reg:SI 1 r1) 
            (nil)))) 
../../../libiberty/cp-demangle.c:3438: internal compiler error: in 
copyprop_hardreg_forward_1, at regrename.c:1549 
Please submit a full bug report, 
with preprocessed source if appropriate. 
 
Attachment is preprocessed source for just the d_print_comp function, let me 
know if you want the whole file. 
 
linux binutils here is 2.14.90.0.8 (from sources.redhat.com). arm-elf binutils 
is 2.14 (vanilla gnu).

-- 
           Summary: ICE in libiberty when building gcc-3.4 for arm-elf
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rob at cobbleware dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-linux-pc-gnu
GCC target triplet: arm-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14576