[BUG middle-end] Optimizations are deleting my adds
miloutch
augustin.serraz@gmail.com
Mon Jun 18 07:40:00 GMT 2012
Nobody have the answer ?
I'm desperate ... :(
miloutch wrote:
>
> Hi,
>
> I have a small problem. I am making a new pass for my gcc, and some of my
> adds are deleted by optimization passes.
> here is the code i add :
>
> t = builtin_decl_explicit (BUILT_IN_ACC_SETUPARGUMENT);
> g = gimple_build_call(t,
> 3,
> build1(ADDR_EXPR, integer_ptr_type_node, length),
> build_int_cst(integer_type_node,TREE_INT_CST_LOW(TYPE_SIZE_UNIT
> (TREE_TYPE (tmp_result)))),
> offset
> );
> gsi_insert_before (&gsi, g, GSI_SAME_STMT);
>
> you see, the variable length wich is actually "length.0" ->
> gimple_omp_for_final() is renamed by ssa pass in length_1(D)
> But, here is an ADDR_EXPR of length, and the optimization don't rename it,
> so it points to the wrong variable because length.0 is not used anymore
> after the optimizations.
>
> I want to know if there is a way to prevent the compiler from optimizing
> this code with a flag in my code for example ?
> Thanks in advance !
>
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