diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/alias.c | 13 |
2 files changed, 16 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c02cf97..6355ac1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Thu Sep 14 00:51:57 EDT 2000 John Wehle (john@feith.com) + + * alias.c (memrefs_conflict_p): An ADDRESSOF doesn't + conflict with frame_pointer_rtx. + 2000-09-13 Kazu Hirata <kazu@hxi.com> * loop.c: Fix formatting. diff --git a/gcc/alias.c b/gcc/alias.c index 32d63b2..be46281 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -1457,8 +1457,17 @@ memrefs_conflict_p (xsize, x, ysize, y, c) return memrefs_conflict_p (xsize, x, ysize, XEXP (y, 0), c); } - if (GET_CODE (x) == ADDRESSOF && GET_CODE (y) == ADDRESSOF) - return xsize < 0 || ysize < 0; + if (GET_CODE (x) == ADDRESSOF) + { + if (y == frame_pointer_rtx + || GET_CODE (y) == ADDRESSOF) + return xsize <= 0 || ysize <= 0; + } + if (GET_CODE (y) == ADDRESSOF) + { + if (x == frame_pointer_rtx) + return xsize <= 0 || ysize <= 0; + } if (CONSTANT_P (x)) { |