[basic-improvements] bootstrap failure on x86

[Diego Novillo <dnovillo at redhat dot com>]

While bootstrapping a bib -> tree-ssa merge yesterday, I ran into
a build failure on libjava.  Zack didn't run into this failure,
but I have now reproduced it on the b-i branch.

Host CC:  gcc (GCC) 3.1.1
Host CXX: g++ (GCC) 3.1.1

Configured with:
$ /home/dnovillo/gcc-3_4-basic-improvements-branch/src/configure --prefix=/home/dnovillo/gcc-3_4-basic-improvements-branch/native --srcdir=/home/dnovillo/gcc-3_4-basic-improvements-branch/src

The failure is in building java/io/ObjectInputStream.o:

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$ /notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/gcc/gcj -B/notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/i686-pc-linux-gnu/libjava/ -B/notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/gcc/ --encoding=UTF-8 -fclasspath= -fbootclasspath=/notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/i686-pc-linux-gnu/libjava -ffloat-store -g -O2 -MD -MT java/io/ObjectInputStream.lo -MF java/io/ObjectInputStream.d -c /home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java -o java/io/ObjectInputStream.o -v -save-temps
Reading specs from /notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/gcc/specs
Reading specs from /notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/i686-pc-linux-gnu/libjava/libgcj.spec
rename spec lib to liborig
Configured with: /home/dnovillo/gcc-3_4-basic-improvements-branch/src/configure --prefix=/home/dnovillo/gcc-3_4-basic-improvements-branch/native --srcdir=/home/dnovillo/gcc-3_4-basic-improvements-branch/src
Thread model: posix
gcc version 3.4-bi 20020930 (experimental)
 /notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/gcc/jc1 /home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java -fhash-synchronization -fno-use-divide-subroutine -fuse-boehm-gc -fnon-call-exceptions -fkeep-inline-functions -quiet -dumpbase ObjectInputStream.java -auxbase-strip java/io/ObjectInputStream.o -g -O2 -version -fencoding=UTF-8 -fclasspath= -fbootclasspath=/notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/i686-pc-linux-gnu/libjava -ffloat-store -MD -MT java/io/ObjectInputStream.lo -MF java/io/ObjectInputStream.d -o ObjectInputStream.s
GNU Java version 3.4-bi 20020930 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 3.4-bi 20020930 (experimental).
Class path starts here:
    ./
    /notnfs/dnovillo/BLD-gcc-3_4-basic-improvements-branch-native.tobiano/i686-pc-linux-gnu/libjava/ (system)
/home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java: In class `java.io.ObjectInputStream':
/home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java: In method `java.io.ObjectInputStream.callReadMethod(java.lang.Object,java.lang.Class)':
/home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java:1390: error: Attempt to delete prologue/epilogue insn:
(insn 556 555 557 27 (nil) (set (reg:SI 5 edi)
        (mem:SI (plus:SI (reg/f:SI 6 ebp)
                (const_int -4 [0xfffffffc])) [0 S4 A8])) -1 (nil)
    (nil))
/home/dnovillo/gcc-3_4-basic-improvements-branch/src/libjava/java/io/ObjectInputStream.java:1390: internal compiler error: in propagate_one_insn, at flow.c:1634
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
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Can anybody else reproduce this failure?


Thanks.  Diego.