Re: [patch] Fix tree-optimization/22236 wrong code for casts and scev

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Aug 13, 2005, at 1:31 PM, Sebastian Pop wrote:

> I've committed the following patch after having bootstrapped/tested it
> on amd64-linux, all languages c,c++,f95,java,objc,ada.

This breaks bootstrap on both powerpc-darwin and i686-pc-linux-gnu.
The backtrace for i686 failure:
#0  bitmap_and_compl_into (a=0xb6000270, b=0x9c364cc) at 
/home/peshtigo/pinskia/src/gnu/gcc/src/gcc/bitmap.c:780
#1  0x080f6353 in insert_phi_nodes_for (var=0xb7bbb058, 
phi_insertion_points=0x9c365dc, update_p=1 '\001')
    at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/tree-into-ssa.c:806
#2  0x080f69fc in insert_updated_phi_nodes_for (var=0xb7bbb058, 
dfs=Variable "dfs" is not available.
) at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/tree-into-ssa.c:2476
#3  0x080f9810 in update_ssa (update_flags=128) at 
/home/peshtigo/pinskia/src/gnu/gcc/src/gcc/tree-into-ssa.c:2771
#4  0x083ed05b in execute_todo (pass=0x85adf40, flags=151, 
use_required=Variable "use_required" is not available.
) at /home/peshtigo/pinskia/src/gnu/gcc/src/gcc/passes.c:701
#5  0x083ed469 in execute_one_pass (pass=0x85adf40) at 
/home/peshtigo/pinskia/src/gnu/gcc/src/gcc/passes.c:807


The backtrace for the ppc failure:
#0  0x001267b4 in bitmap_and_into (a=0x4281bb80, b=0x4281f3bc) at 
/Users/pinskia/src/local3/gcc/gcc/bitmap.c:664
#1  0x00334d64 in global_alloc (file=0x0) at 
/Users/pinskia/src/local3/gcc/gcc/global.c:2350
#2  0x003363dc in rest_of_handle_global_alloc () at 
/Users/pinskia/src/local3/gcc/gcc/global.c:2490
#3  0x00161a74 in execute_one_pass (pass=0x589cb0) at 
/Users/pinskia/src/local3/gcc/gcc/passes.c:797
#4  0x00161b64 in execute_pass_list (pass=0x4f0cf8) at 
/Users/pinskia/src/local3/gcc/gcc/passes.c:829
#5  0x00161b7c in execute_pass_list (pass=0x4eeed4) at 
/Users/pinskia/src/local3/gcc/gcc/passes.c:830
#6  0x00162eb8 in tree_rest_of_compilation (fndecl=0x580900) at 
/Users/pinskia/src/local3/gcc/gcc/tree-optimize.c:419


I am starting to think bitmap is miscompiled but I don't know for.

-- Pinski