[Bug tree-optimization/35842] New: ICE without -fno-tree-ch

["nightstrike at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

gcc version 4.3.0 and 4.4.0 have an ICE when compiling a small piece of Firefox
code.  It happens with -O1, 2, or 3 and does not with -O0 or -Os.

The ICE is as follows:

x86_64-pc-mingw32-g++: warning: -pipe ignored because -save-temps specified
/mnt/dump/src/mozilla/mozilla/security/manager/ssl/src/nsCipherInfo.cpp: In
constructor ?nsCipherInfo::nsCipherInfo(PRUint16)?:
/mnt/dump/src/mozilla/mozilla/security/manager/ssl/src/nsCipherInfo.cpp:73:
internal compiler error: in create_mem_ref, at tree-ssa-address.c:603


The cpp file in question is here:
http://mxr.mozilla.org/mozilla/source/security/manager/ssl/src/nsCipherInfo.cpp


A gdb traceback is here:

(gdb) where
#0  internal_error (gmsgid=0x899e0ca "in %s, at %s:%d") at
../../gcc/gcc/diagnostic.c:598
#1  0x082bd2df in fancy_abort (file=0x89de4d4
"../../gcc/gcc/tree-ssa-address.c", line=603, function=0x89de5c8
"create_mem_ref")
    at ../../gcc/gcc/diagnostic.c:654
#2  0x0856b25c in create_mem_ref (bsi=0xbfde871c, type=0xb6cfb3a8,
addr=0xbfde8660) at ../../gcc/gcc/tree-ssa-address.c:603
#3  0x085c03c7 in rewrite_use_address (data=0xbfde891c, use=0x8c499c8,
cand=0x8c2daa8) at ../../gcc/gcc/tree-ssa-loop-ivopts.c:5227
#4  0x085c3f4c in rewrite_uses (data=0xbfde891c) at
../../gcc/gcc/tree-ssa-loop-ivopts.c:5286
#5  0x085c8659 in tree_ssa_iv_optimize_loop (data=0xbfde891c, loop=<value
optimized out>) at ../../gcc/gcc/tree-ssa-loop-ivopts.c:5485
#6  0x085c8c75 in tree_ssa_iv_optimize () at
../../gcc/gcc/tree-ssa-loop-ivopts.c:5518
#7  0x085d7295 in tree_ssa_loop_ivopts () at
../../gcc/gcc/tree-ssa-loop.c:580
#8  0x084276ef in execute_one_pass (pass=0x8ae7680) at
../../gcc/gcc/passes.c:1127
#9  0x084278f7 in execute_pass_list (pass=0x8ae7680) at
../../gcc/gcc/passes.c:1180
#10 0x0842790a in execute_pass_list (pass=0x8ae72c0) at
../../gcc/gcc/passes.c:1181
#11 0x0842790a in execute_pass_list (pass=0x8ae6b00) at
../../gcc/gcc/passes.c:1181
#12 0x08523dec in tree_rest_of_compilation (fndecl=0xb749e7e0) at
../../gcc/gcc/tree-optimize.c:420
#13 0x08715b98 in cgraph_expand_function (node=0xb6d17410) at
../../gcc/gcc/cgraphunit.c:1157
#14 0x0871817e in cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:1220
#15 0x0810c285 in cp_write_global_declarations () at
../../gcc/gcc/cp/decl2.c:3471
#16 0x084b192c in toplev_main (argc=13, argv=0xbfde8bf4) at
../../gcc/gcc/toplev.c:971
#17 0x08225792 in main (argc=1634296879, argv=0x736f6e67) at
../../gcc/gcc/main.c:35



I will upload the preprocessed source.


-- 
           Summary: ICE without -fno-tree-ch
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: nightstrike at gmail dot com
  GCC host triplet: i686-pc-linux
GCC target triplet: x86_64-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35842