+Mon Apr 6 07:17:52 1998 Catherine Moore <clm@cygnus.com>
+
+ * combine.c (can_combine_p): Include successor in volatile test.
+
Mon Apr 6 14:16:33 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* sh.h (CASE_VECTOR_SHORTEN_MODE): Fix logic when to set
return 0;
/* If INSN contains anything volatile, or is an `asm' (whether volatile
- or not), reject, unless nothing volatile comes between it and I3,
- with the exception of SUCC. */
+ or not), reject, unless nothing volatile comes between it and I3 */
if (GET_CODE (src) == ASM_OPERANDS || volatile_refs_p (src))
- for (p = NEXT_INSN (insn); p != i3; p = NEXT_INSN (p))
- if (GET_RTX_CLASS (GET_CODE (p)) == 'i'
- && p != succ && volatile_refs_p (PATTERN (p)))
- return 0;
+ {
+ /* Make sure succ doesn't contain a volatile reference. */
+ if (succ != 0 && volatile_refs_p (PATTERN (succ)))
+ return 0;
+
+ for (p = NEXT_INSN (insn); p != i3; p = NEXT_INSN (p))
+ if (GET_RTX_CLASS (GET_CODE (p)) == 'i'
+ && p != succ && volatile_refs_p (PATTERN (p)))
+ return 0;
+ }
/* If INSN is an asm, and DEST is a hard register, reject, since it has
to be an explicit register variable, and was chosen for a reason. */