r216154 - in /trunk/gcc: ChangeLog config/i386/...

[kyukhin@gcc.gnu.org]

Author: kyukhin
Date: Mon Oct 13 17:26:49 2014
New Revision: 216154

URL: https://gcc.gnu.org/viewcvs?rev=216154&root=gcc&view=rev
Log:

gcc/
	PR target/8340
	PR middle-end/47602
	PR rtl-optimization/55458
	* 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 PIC register initialization
	now performed in ix86_init_pic_reg.
	(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.
	* config/i386/i386.h (PIC_OFFSET_TABLE_REGNUM): Return INVALID_REGNUM
	if pic_offset_table_rtx exists.
	* doc/tm.texi.in (TARGET_USE_PSEUDO_PIC_REG, TARGET_INIT_PIC_REG):
	Document.
	* doc/tm.texi: Regenerate.
	* function.c (assign_parms): Generate pseudo register for PIC.
	* init-regs.c (initialize_uninitialized_regs): Ignor pseudo PIC
	register.
	* ira-color.c (color_pass): Add check on pseudo register.
	* ira-emit.c (change_loop): Don't create copies for PIC pseudo
	register.
	* ira.c (split_live_ranges_for_shrink_wrap): Add check on pseudo
	register.
	(ira): Add target specific PIC register initialization.
	(do_reload): Keep PIC pseudo register.
	* lra-assigns.c (spill_for): Add checks on pseudo register.
	* lra-constraints.c (contains_symbol_ref_p): New.
	(lra_constraints): Enable lra risky transformations when PIC is pseudo
	register.
	* shrink-wrap.c (try_shrink_wrapping): Add check on pseudo register.
	* target.def (use_pseudo_pic_reg): New.
	(init_pic_reg): New.

gcc/testsuite/
	PR target/8340
	PR middle-end/47602
	PR rtl-optimization/55458
	* gcc.target/i386/pic-1.c: Remove dg-error as test should pass now.
	* gcc.target/i386/pr55458.c: Likewise.
	* gcc.target/i386/pr47602.c: New.
	* gcc.target/i386/pr23098.c: Move to XFAIL.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/i386/i386.h
    trunk/gcc/doc/tm.texi
    trunk/gcc/doc/tm.texi.in
    trunk/gcc/function.c
    trunk/gcc/init-regs.c
    trunk/gcc/ira-color.c
    trunk/gcc/ira-emit.c
    trunk/gcc/ira.c
    trunk/gcc/lra-assigns.c
    trunk/gcc/lra-constraints.c
    trunk/gcc/shrink-wrap.c
    trunk/gcc/target.def
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/pic-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr23098.c
    trunk/gcc/testsuite/gcc.target/i386/pr55458.c