[Bug bootstrap/13709] [tree-ssa] compiler fails to bootstrap on ia64

["hubicka at ucw dot cz" <gcc-bugzilla@gcc.gnu.org>]

------- Additional Comments From hubicka at ucw dot cz  2004-01-17 16:38 -------
Subject: Re:  [tree-ssa] compiler fails to bootstrap on ia64

> 
> ------- Additional Comments From dnovillo at gcc dot gnu dot org  2004-01-17 16:19 -------
> 
> Jan,
> 
> We die in flow.c:init_propagate_block_info because even though the basic block
> is a conditional jump, it seemingly has no successors.  Something is either
> messing up or not building the RTL CFG properly.
> 
> Program received signal SIGSEGV, Segmentation fault.
> init_propagate_block_info (bb=0x2000000002892a00, live=0x60000000000edac0,
>     local_set=0x0, cond_local_set=0x0, flags=0)
>     at /home/cygnus/dnovillo/tree-ssa-01/src.ia64/gcc/flow.c:1848
> 1848          bb_true = bb->succ->dest;
> (gdb) ptbb bb
> ;; basic block 16, loop depth 0, count 0
> ;; prev block 8, next block 9
> ;; pred:
> ;; succ:
> ;; Registers live at start:  1 [r1] 8 [r8] 9 [r9] 12 [r12] 32 [r36] 33 [r37]
> (note 147 55 56 16 [bb 16] NOTE_INSN_BASIC_BLOCK)
> (jump_insn 56 147 62 16
> /home/cygnus/dnovillo/tree-ssa-01/src.ia64/gcc/libgcc2.c:93 (set (pc)
>         (if_then_else (ne (reg:BI 262 p6 [360])
>                 (const_int 0 [0x0]))
>             (label_ref 66)
>             (pc))) 218 {*br_true} (insn_list 55 (nil))
>     (expr_list:REG_DEAD (reg:BI 262 p6 [360])
>         (expr_list:REG_BR_PROB (const_int 5000 [0x1388])
>             (nil))))
> ;; Registers live at end:  1 [r1] 8 [r8] 9 [r9] 12 [r12] 32 [r36] 33 [r37]
> (gdb) p bb->succ
> $1 = 0x0
> 
> 
> 
> There were a couple of changes from you that affected the CFG.  Could you take a
> look?

Hmm, i did no changes in this area, as you didn't approved my CFG
transparent expansion patch yet :)

I will look into it.  If you do have ia64 build, can you pass me
preprocessed source so I don't need to get binutils for the
crosscompiler?

Honza
> 
> 
> Thanks.  Diego.
> 
> -- 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |dnovillo at gcc dot gnu dot
>                    |                            |org
>          AssignedTo|dnovillo at gcc dot gnu dot |hubicka at gcc dot gnu dot
>                    |org                         |org
> 
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13709
> 
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13709