[sched-deps] Remove needless check for modified_in_p when trying to fuse two non...

[sched-deps] Remove needless check for modified_in_p when trying to fuse two non-conditional jump insns

	* sched-deps.c (sched_macro_fuse_insns): Do not check modified_in_p
	in the not conditional jump case.
	* doc/tm.texi (TARGET_SCHED_MACRO_FUSION_PAIR_P): Update description.
	* target.def (TARGET_SCHED_MACRO_FUSION_PAIR_P): Update description.

	* gcc.target/aarch64/fuse_adrp_add_1.c: New test.

Change-Id: Iabca4d52f98a2eccc388be2398e441cb33bd4997
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218012 138bc75d-0d04-0410-961f-82ee72b054a4