On Thu, Feb 10, 2011 at 6:23 AM, Mohamed Shafi <shafi...@gmail.com> wrote:
> Hi all,
>
> I am trying to port a private target in GCC 4.5.1. Following are the
> properties of the target
>
> #define BITS_PER_UNIT 32
> #define BITS_PER_WORD 32
> #define UNITS_PER_WORD 1
>
>
> #define CHAR_TYPE_SIZE 32
> #define SHORT_TYPE_SIZE 32
> #define INT_TYPE_SIZE 32
> #define LONG_TYPE_SIZE 32
> #define LONG_LONG_TYPE_SIZE 32
>
>
>
> I am getting an ICE
> internal compiler error: in get_constraint_for_component_ref, at
> tree-ssa-structalias.c:3031
>
> For the following testcase:
>
> struct fb_cmap {
> int start;
> int len;
> int *green;
> };
>
> extern struct fb_cmap fb_cmap;
>
> void directcolor_update_cmap(void)
> {
> fb_cmap.green[0] = 34;
> }
>
> The following is the output of debug_tree of the argument thats given
> for the function get_constraint_for_component_ref
>
> <component_ref 0x2b6a45618080
> type <pointer_type 0x2b6a45559930
> type <integer_type 0x2b6a4554a498 int public QI
> size <integer_cst 0x2b6a4553c460 constant 32>
> unit size <integer_cst 0x2b6a4553c488 constant 1>
> align 32 symtab 0 alias set -1 canonical type
> 0x2b6a4554a498 precision 32 min <integer_cst 0x2b6a4553c5c8
> -2147483648> max <integer_cst 0x2b6a4553c5f0 2147483647>
> pointer_to_this <pointer_type 0x2b6a45559930>>
> unsigned PQI size <integer_cst 0x2b6a4553c460 32> unit size
> <integer_cst 0x2b6a4553c488 1>
> align 32 symtab 0 alias set -1 canonical type 0x2b6a45559930>
>
> arg 0 <var_decl 0x2b6a45614000 fb_cmap
> type <record_type 0x2b6a45602888 fb_cmap type_0 BLK
> size <integer_cst 0x2b6a455fc4d8 constant 96>
> unit size <integer_cst 0x2b6a455fc488 constant 3>
> align 32 symtab 0 alias set -1 canonical type
> 0x2b6a45602888 fields <field_decl 0x2b6a45613000 start> context
> <translation_unit_decl 0x2b6a4555f7e8 D.1201>
> chain <type_decl 0x2b6a4555f730 D.1193>>
> used public external common BLK file pr28675.c line 7 col 23
> size <integer_cst 0x2b6a455fc4d8 96> unit size <integer_cst
> 0x2b6a455fc488 3>
> align 32
> chain <function_decl 0x2b6a45616000 directcolor_update_cmap
> type <function_type 0x2b6a45560888>
> public static QI file pr28675.c line 9 col 6 align 32
> initial <block 0x2b6a45619000> result <result_decl 0x2b6a45617000
> D.1200>
> (mem:QI (symbol_ref:PQI ("directcolor_update_cmap") [flags
> 0x3] <function_decl 0x2b6a45616000 directcolor_update_cmap>) [0 S1
> A32])
> struct-function 0x2b6a455453f0>>
> arg 1 <field_decl 0x2b6a45613130 green type <pointer_type 0x2b6a45559930>
> unsigned PQI file pr28675.c line 4 col 7 size <integer_cst
> 0x2b6a4553c460 32> unit size <integer_cst 0x2b6a4553c488 1>
> align 32 offset_align 32
> offset <integer_cst 0x2b6a4553c8c0 constant 2>
> bit offset <integer_cst 0x2b6a4553cc80 constant 0> context
> <record_type 0x2b6a45602888 fb_cmap>>
> pr28675.c:11:10>
>
> I was wondering if this ICE is due to the fact that this is a 32bit
> char target ? Can somebody help me with pointers to debug this issue?
Try fixing the * 8 in bitpos_of_field to use BITS_PER_UNIT.
> Regards,
> Shafi
>
