arm.h (CONDITIONAL_REGISTER_USAGE): If flag_pic, never use PIC_OFFSET_TABLE_REGNUM...

arm.h (CONDITIONAL_REGISTER_USAGE): If flag_pic, never use PIC_OFFSET_TABLE_REGNUM for general alloaction.

* arm.h (CONDITIONAL_REGISTER_USAGE): If flag_pic, never use
PIC_OFFSET_TABLE_REGNUM for general alloaction.
(INITIAL_ELIMINATION_OFFSET): Count the fact that the PIC register
must be stacked if it is used for PIC accesses.
* arm.c (use_return_insn): Handle PIC register specially.
(output_return_instruction): Likewise.
(output_func_{prologue,epilogue}): Likewise.
(output_expand_prologue): Likewise.

From-SVN: r27605