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Re: [patch] Update loops in cfg manipulation functions


Hello,

> I think your patch may have introduced several regressions in mainline.
> With revision @118934, I'm getting many instances of:
> 
> FAIL: gcc.c-torture/execute/20031204-1.c compilation,  -O3 
> -fomit-frame-pointer -funroll-loops  (internal compiler error)

what target?

Zdenek

> All the failures trigger the CFG verifier in:
> 
> 121               error ("verify_flow_info: Block %i has loop_father, but 
> there are no loops",
> (gdb) list 121
> 116           edge e;
> 117           edge_iterator ei;
> 118
> 119           if (bb->loop_father != NULL && current_loops == NULL)
> 120             {
> 121               error ("verify_flow_info: Block %i has loop_father, but 
> there are no loops",
> 122                      bb->index);
> 123               err = 1;
> 124             }
> 125           if (bb->loop_father == NULL && current_loops != NULL)
> (gdb) ptbb bb
> ;; basic block 2, loop depth 0, count 0
> ;; prev block 0, next block 1
> ;; pred:       ENTRY [100.0%]  (fallthru)
> ;; succ:
> ;; Registers live at start:  (nil)
> (note 10 8 12 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
> (insn 12 10 13 2 (set (reg:SI 5 di)
>        (const_int 0 [0x0])) 40 {*movsi_1} (nil)
>    (nil))
> (call_insn 13 12 14 2 (call (mem:QI (symbol_ref:DI ("exit") [flags 0x41] 
> <function_decl 0x2aaaaab73000 exit>) [0 S1 A8])
>        (const_int 0 [0x0])) 553 {*call_0} (nil)
>    (expr_list:REG_NORETURN (const_int 0 [0x0])
>        (expr_list:REG_EH_REGION (const_int 0 [0x0])
>            (nil)))
>    (expr_list:REG_DEP_TRUE (use (reg:SI 5 di))
>        (nil)))
> ;; Registers live at end:  (nil)
> 


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