rtl.h (struct rtx_def): Document unchanging and in_struct flags more accurately.

2002-05-09  David S. Miller  <davem@redhat.com>

	* rtl.h (struct rtx_def): Document unchanging and in_struct flags
	more accurately.
	(INSN_ANNULLED_BRANCH_P): Only valid for JUMP_INSN and CALL_INSN, fix
	comment.
	(INSN_FROM_TARGET_P): Valid also for CALL_INSN.
	* doc/rtl.texi: Document these macros more accurately.
	* recog.c (whole file): Only mess with INSN_ANNULLED_BRANCH_P for
	JUMP_INSNs and CALL_INSNs.
	* resource.c (whole file): Only mess with INSN_ANNULLED_BRANCH_P
	or INSN_FROM_TARGET_P if the code is appropriate.

From-SVN: r53360