https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100799
--- Comment #33 from Ajit Kumar Agarwal <aagarwa at gcc dot gnu.org> ---
Sent the patch for review.
Here is the patch:
PATCH] rs6000: Stackoverflow in optimized code on PPC (PR100799)
When using FlexiBLAS with OpenBLAS we noticed corruption of
the parameters passed to OpenBLAS functions. FlexiBLAS
basically provides a BLAS interface where each function
is a stub that forwards the arguments to a real BLAS lib,
like OpenBLAS.
Fixes the corruption of caller frame checking number of
arguments is less than equal to GP_ARG_NUM_REG (8)
excluding hidden unused DECLS.
2024-03-22 Ajit Kumar Agarwal <aagar...@linux.ibm.com>
gcc/ChangeLog:
PR rtk-optimization/100799
* config/rs600/rs600-calls.cc (rs6000_function_arg): Don't
generate parameter save area if number of arguments passed
less than equal to GP_ARG_NUM_REG (8) excluding hidden
paramter.
* function.cc (assign_parms_initialize_all): Check for hidden
parameter in fortran code and set the flag hidden_string_length
and actual paramter passed excluding hidden unused DECLS.
* function.h: Add new field hidden_string_length and
actual_parm_length in function structure.
