i386 specific part of the patch:
2014-10-08 Ilya Enkovich <ilya.enkov...@intel.com>
Vladimir Makarov <vmaka...@redhat.com>
* gcc/config/i386/i386.c (ix86_use_pseudo_pic_reg): New.
(ix86_init_pic_reg): New.
(ix86_select_alt_pic_regnum): Add check on pseudo register.
(ix86_save_reg): Likewise.
(ix86_expand_prologue): Remove irrelevant code.
(ix86_output_function_epilogue): Add check on pseudo register.
(set_pic_reg_ever_alive): New.
(legitimize_pic_address): Replace df_set_regs_ever_live with new
set_pic_reg_ever_alive.
(legitimize_tls_address): Likewise.
(ix86_pic_register_p): New check.
(ix86_delegitimize_address): Add check on pseudo register.
(ix86_expand_call): Insert move from pseudo PIC register to ABI
defined REAL_PIC_OFFSET_TABLE_REGNUM.
(TARGET_INIT_PIC_REG): New.
(TARGET_USE_PSEUDO_PIC_REG): New.
(PIC_OFFSET_TABLE_REGNUM): New check.
enabling_ebx_i386.patch
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