Created attachment 28438 [details]
Use DF_LIVE where possible in IRA

Only in reload1.c should we continue to use DF_LR
Bootstrapped on x86_64-unknown-linux-gnu.

Author: steven
Date: Sun Oct 14 19:30:59 2012
New Revision: 192440

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192440
Log:
	PR rtl-optimization/38711
	* df.h (df_get_live_out, df_get_live_in): Make static inline functions.
	* df-problems.c (df_get_live_out, df_get_live_in): Moved to df.h.
	* ira-lives.c (process_bb_node_lives): Use df_get_live_out instead of
	DF_LR_OUT.
	* ira-build.c (create_bb_allocnos): Likewise.
	(create_loop_allocnos): Likewise, and use df_get_live_in instead of
	DF_LR_IN.
	* ira-emit.c (generate_edge_moves): Likewise.
	(add_ranges_and_copies): Likewise.
	* ira-color.c (ira_loop_edge_freq): Use df_get_live_out instead of
	DF_LR_OUT, and df_get_live_in instead of DF_LR_IN.
	* ira.c (mark_elimination): Update DF_LR and DF_LIVE.
	(build_insn_chain): Use df_get_live_out instead of DF_LR_OUT.
	(do_reload): Remove the DF_LIVE problem for -O1.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/df-problems.c
    trunk/gcc/df.h
    trunk/gcc/ira-build.c
    trunk/gcc/ira-color.c
    trunk/gcc/ira-emit.c
    trunk/gcc/ira-lives.c
    trunk/gcc/ira.c

Fixed as of trunk r192440, for GCC 4.8.

Author: steven
Date: Sun Oct 28 11:52:11 2012
New Revision: 192890

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192890
Log:
	PR rtl-optimization/38711
	* ira.c (ira): Remove DF_LIVE if the problem is in the stack.
	(do_reload): Add it back at the end for -O2 and higher.

	* function.c (thread_prologue_and_epilogue_insns): Use
	REG_SET_TO_HARD_REG_SET instead of CLEAR_HARD_REG_SET and
	reg_set_to_hard_reg_set.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/function.c
    trunk/gcc/ira.c

Much of GCC is still not ready for this.

GCC 4.8.0 is being released, adjusting target milestone.

GCC 4.8.1 has been released.

GCC 4.8.2 has been released.

(In reply to Steven Bosscher from comment #5)
> Much of GCC is still not ready for this.

What about now?

(In reply to Eric Gallager from comment #9)

Not much has changed. There's LRA now, so for targets using LRA
things may now work. Worth a try if someone's interested.

Not working on this => unassigned...

(In reply to Steven Bosscher from comment #10)
> (In reply to Eric Gallager from comment #9)
> 
> Not much has changed. There's LRA now, so for targets using LRA
> things may now work. 

That's most targets...