Hi

This patch is part of a series of patches to add support for Armv8.1-M 
Mainline instructions to binutils.

This patch adds the BFL instruction.

Testing: Added new test for the valid and invalid instruction operands. 
Testsuite shows no regression when run for arm-none-eabi targets.

Thanks
Sudi


ChangeLog entries are as follows :

*** gas/ChangeLog ***

2019-04-04  Sudakshina Das  <sudi.das@arm.com>

	* config/tc-arm.c (T16_32_TAB): New entrie for bfl.
	(do_t_v8_1_branch): New switch case for bfl.
	(insns): New instruction for bfl.
	* testsuite/gas/arm/armv8_1-m-bfl.d: New.
	* testsuite/gas/arm/armv8_1-m-bfl.s: New.
	* testsuite/gas/arm/armv8_1-m-bfl-bad.s: New.
	* testsuite/gas/arm/armv8_1-m-bfl-bad.d: New.
	* testsuite/gas/arm/armv8_1-m-bfl-bad.l: New.

*** ld/ChangeLog ***

2019-04-04  Sudakshina Das  <sudi.das@arm.com>

	* testsuite/ld-arm/bfl.s: New.
	* testsuite/ld-arm/bfl.d: New.
	* testsuite/ld-arm/arm-elf.exp: Add above test.

*** opcodes/ChangeLog ***

2019-04-04  Sudakshina Das  <sudi.das@arm.com>

	* arm-dis.c (thumb32_opcodes): New instruction bfl.