bpf: create modifier for mem operand for xchg and cmpxchgHEADtrunkmaster

Both xchg and cmpxchg instructions, in the pseudo-C dialect, do not
expect their memory address operand to be surrounded by parentheses.
For example, it should be output as "w0 =cmpxchg32_32(r8+8,w0,w2)"
instead of "w0 =cmpxchg32_32((r8+8),w0,w2)".

This patch implements an operand modifier 'M' which marks the
instruction templates that do not expect the parentheses, and adds it do
xchg and cmpxchg templates.

gcc/ChangeLog:
	* config/bpf/atomic.md (atomic_compare_and_swap,
	atomic_exchange): Add operand modifier %M to the first
	operand.
	* config/bpf/bpf.cc (no_parentheses_mem_operand): Create
	variable.
	(bpf_print_operand): Set no_parentheses_mem_operand variable if
	%M operand is used.
	(bpf_print_operand_address): Conditionally output parentheses.

gcc/testsuite/ChangeLog:
	* gcc.target/bpf/pseudoc-atomic-memaddr-op.c: Add test.

0 files changed, 0 insertions, 0 deletions