[Bug target/17303] New: [3.4] bootstrap failure sh4-unknown-linux-gnu

["kkojima at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

gcc 3.4.2 RC2 fails to bootstrap on sh4-unknown-linux-gnu with:

stage2/xgcc -Bstage2/ -B/usr/gnu/sh4-unknown-linux-gnu/bin/ -c   -g -O2 -DIN_GCC
  -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic
-Wno-long-long -Wold-style-definition     -DHAVE_CONFIG_H    -I. -I.
-I../../gcc-3.4.2-20040902/gcc -I../../gcc-3.4.2-20040902/gcc/.
-I../../gcc-3.4.2-20040902/gcc/../include  ../../gcc-3.4.2-20040902/gcc/gcse.c
-o gcse.o
../../gcc-3.4.2-20040902/gcc/gcse.c: In function `store_motion':
../../gcc-3.4.2-20040902/gcc/gcse.c:8008: internal compiler error: Illegal
instruction

The problematic illegal instruction is a branch instruction in a delayed
slot.  gdb shows:

Program received signal SIGILL, Illegal instruction.
0x006982ca in mark_referenced_regs (x=0x2a1c0d50)
    at ../../gcc-3.4.2-20040902/gcc/caller-save.c:598
598               int nregs = HARD_REGNO_NREGS (hardregno, GET_MODE (x));
(gdb) disas $pc $pc+4
Dump of assembler code from 0x6982ca to 0x6982ce:
0x006982ca <mark_referenced_regs+1066>: bf.s    0x6982d0 <mark_referenced_regs+1072>
0x006982cc <mark_referenced_regs+1068>: bra     0x6981d8 <mark_referenced_regs+824>
End of assembler dump.

and it looks the same problem reported with
http://gcc.gnu.org/ml/gcc-patches/2004-08/msg01713.html
for mainline.
The patch in the above URL was approved by Joern and applied on mainline
already and fixes this bootstrap failure of 3.4.2 RC2.

-- 
           Summary: [3.4] bootstrap failure sh4-unknown-linux-gnu
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kkojima at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,joern dot rennecke at
                    superh dot com,mark at codesourcery dot com
 GCC build triplet: sh4-unknown-linux-gnu
  GCC host triplet: sh4-unknown-linux-gnu
GCC target triplet: sh4-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17303