"before block local scheduling" failure

Crash in C2 during runThese testing:

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# Internal Error (/nightly/ws/src/share/vm/opto/output.cpp, 2235 [ Patched ]), pid=28901, tid=10
#
# Java VM: Java HotSpot(TM) Server VM (1.5-nightly_2004.06.23-debug mixed mode)
#
# Error: before block local scheduling
 
--------------- T H R E A D ---------------
 
Current thread (0x00192e90): JavaThread "CompilerThread1" daemon [_thread_in_native, id=10]
 
Stack: [0xf7500000,0xf7580000), sp=0xf757e198, free space=504k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xc33684] __1cHVMErrorOreport_and_die6M_v_+0x724
V [libjvm.so+0x40ec70] __1cMreport_fatal6Fpkci1_v_+0x74
V [libjvm.so+0xa1a03c] __1cKSchedulingUverify_good_schedule6MpnFBlock_pkc_v_+0x98c
V [libjvm.so+0xa1b808] __1cKSchedulingbFComputeRegisterAntidependencies6MpnFBlock__v_+0x3c
V [libjvm.so+0xa1900c] __1cKSchedulingMDoScheduling6M_v_+0x574
V [libjvm.so+0xa1049c] __1cHCompileGOutput6M_v_+0x10ac
V [libjvm.so+0x3aafdc] __1cHCompileICode_Gen6M_v_+0x4f8
V [libjvm.so+0x3a4efc] __1cHCompile2t6MpnFciEnv_pnKC2Compiler_pnIciMethod_ii_v_+0x16f4
V [libjvm.so+0x2a7a8c] __1cKC2CompilerOcompile_method6MpnFciEnv_pnIciMethod_i_v_+0xf4
V [libjvm.so+0x3b79c0] __1cNCompileBrokerZinvoke_compiler_on_method6FpnLCompileTask__v_+0x990
V [libjvm.so+0x3b6460] __1cNCompileBrokerUcompiler_thread_loop6F_v_+0x734
V [libjvm.so+0xba4b4c] __1cKJavaThreadDrun6M_v_+0x500
V [libjvm.so+0x9feee4] _start+0x180
 
 
Current CompileTask:
opto:1985% TestPDE.solveImplicit()V @ 82 (251 bytes)


This was found through nightly testing with runThese.

Machine was betty.east:
betty% uname -a
SunOS betty 5.9 Generic_112233-12 sun4u sparc SUNW,Sun-Blade-1000
betty% psrinfo -v
Status of virtual processor 0 as of: 06/24/2004 16:53:31
  on-line since 06/20/2004 16:10:11.
  The sparcv9 processor operates at 900 MHz,
        and has a sparcv9 floating point processor.
Status of virtual processor 1 as of: 06/24/2004 16:53:31
  on-line since 06/20/2004 16:10:13.
  The sparcv9 processor operates at 900 MHz,
        and has a sparcv9 floating point processor.


I've attached the runList.dat, core file, and hs_err file.
The VM used to generate the file is on betty, in
  /nightly/jdk/solaris-sparc
and was the contents of rt_baseline for the night of 6/23/2004.