r236173 - in /branches/gcc-6-branch/gcc: Change...

[ktkachov@gcc.gnu.org]

Author: ktkachov
Date: Thu May 12 12:47:03 2016
New Revision: 236173

URL: https://gcc.gnu.org/viewcvs?rev=236173&root=gcc&view=rev
Log:
[ARM] PR target/70830: Avoid POP-{reglist}^ when returning from interrupt handlers

	Backport from mainline
	2016-05-12  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	PR target/70830
	* config/arm/arm.c (arm_output_multireg_pop): Avoid POP instruction
	when popping the PC and within an interrupt handler routine.
	Add missing tab to output of "ldmfd".
	(output_return_instruction): Output LDMFD with SP update rather
	than POP when returning from interrupt handler.

	* gcc.target/arm/interrupt-1.c: Change dg-compile to dg-assemble.
	Add -save-temps to dg-options.
	Scan for ldmfd rather than pop instruction.
	* gcc.target/arm/interrupt-2.c: Likewise.
	* gcc.target/arm/pr70830.c: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/pr70830.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/arm/arm.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/interrupt-1.c
    branches/gcc-6-branch/gcc/testsuite/gcc.target/arm/interrupt-2.c