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| author | John Wehle <john@feith.com> | 2000-09-14 04:47:48 +0000 |
|---|---|---|
| committer | John Wehle <wehle@gcc.gnu.org> | 2000-09-14 04:47:48 +0000 |
| commit | b24ea0776687310b2f3d767146eb6568f788a198 (patch) | |
| tree | 4d020ff04ceae8759a7474b147b19582163fdd06 | |
| parent | fd5d5b07b743014af3b70d4b0f9ca9bdfacf3656 (diff) | |
| download | gcc-b24ea0776687310b2f3d767146eb6568f788a198.zip gcc-b24ea0776687310b2f3d767146eb6568f788a198.tar.gz gcc-b24ea0776687310b2f3d767146eb6568f788a198.tar.bz2 | |
alias.c (memrefs_conflict_p): An ADDRESSOF doesn't conflict with frame_pointer_rtx.
* alias.c (memrefs_conflict_p): An ADDRESSOF doesn't
conflict with frame_pointer_rtx.
From-SVN: r36401
| -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)) { |