r262738 - in /branches/gcc-8-branch/gcc: Change...

[claziss@gcc.gnu.org]

Author: claziss
Date: Mon Jul 16 16:17:02 2018
New Revision: 262738

URL: https://gcc.gnu.org/viewcvs?rev=262738&root=gcc&view=rev
Log:
[ARC] Reimplement return padding

2018-06-16  Claudiu Zissulescu  <claziss@synopsys.com>

	Backport from mainline
	2018-06-12  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (arc_pad_return): Remove.
	* config/arc/arc.c (machine_function): Remove force_short_suffix
	and size_reason.
	(arc_print_operand): Adjust printing of '&'.
	(arc_verify_short): Remove conditional printing of short suffix.
	(arc_final_prescan_insn): Remove reference to size_reason.
	(pad_return): New function.
	(arc_reorg): Call pad_return.
	(arc_pad_return): Remove.
	(arc_init_machine_status): Remove reference to force_short_suffix.
	* config/arc/arc.md (vunspec): Add VUNSPEC_ARC_BLOCKAGE.
	(attr length): When attribute iscompact is true force to 2
	regardless; in the case of maybe check if we want to force the
	instruction to have 4 bytes length.
	(nopv): Change it to generate 4 byte long nop as well.
	(blockage): New pattern.
	(simple_return): Remove call to arc_pad_return.
	(p_return_i): Likewise.


Added:
    branches/gcc-8-branch/gcc/testsuite/gcc.target/arc/pr9001107555.c
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/config/arc/arc-protos.h
    branches/gcc-8-branch/gcc/config/arc/arc.c
    branches/gcc-8-branch/gcc/config/arc/arc.md
    branches/gcc-8-branch/gcc/config/arc/t-multilib
    branches/gcc-8-branch/gcc/testsuite/ChangeLog