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| author | Richard Henderson <rth@redhat.com> | 2001-12-12 10:10:56 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-12-12 10:10:56 -0800 |
| commit | d14419e437a6ae85159ffc6c5b04d092c7b1b63a (patch) | |
| tree | 76a876c09c311488ac096f74c793c85b5a88894a | |
| parent | 8cdfa312b4d4d0abdca7e9b9ecd4333568d40b83 (diff) | |
| download | gcc-d14419e437a6ae85159ffc6c5b04d092c7b1b63a.zip gcc-d14419e437a6ae85159ffc6c5b04d092c7b1b63a.tar.gz gcc-d14419e437a6ae85159ffc6c5b04d092c7b1b63a.tar.bz2 | |
emit-rtl.c (adjust_address_1): Always copy address to avoid shared rtl.
* emit-rtl.c (adjust_address_1): Always copy address to avoid
shared rtl.
From-SVN: r47942
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/emit-rtl.c | 16 |
2 files changed, 14 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 319e07e..ed8c11b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-12-12 Richard Henderson <rth@redhat.com> + + * emit-rtl.c (adjust_address_1): Always copy address to avoid + shared rtl. + Wed Dec 12 07:37:52 2001 Olivier Hainque <hainque@act-europe.fr> * stmt.c (expand_end_case): Do subtraction of lower bound as trees diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 7c7dfd3..72886d1 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1966,15 +1966,17 @@ adjust_address_1 (memref, mode, offset, validate, adjust) rtx size = 0; unsigned int memalign = MEM_ALIGN (memref); - if (adjust == 0 || offset == 0) - /* ??? Prefer to create garbage instead of creating shared rtl. */ - addr = copy_rtx (addr); + /* ??? Prefer to create garbage instead of creating shared rtl. + This may happen even if adjust is non-zero -- consider + (plus (plus reg reg) const_int) -- so do this always. */ + addr = copy_rtx (addr); + /* If MEMREF is a LO_SUM and the offset is within the alignment of the object, we can merge it into the LO_SUM. */ - else if (GET_MODE (memref) != BLKmode && GET_CODE (addr) == LO_SUM - && offset >= 0 - && (unsigned HOST_WIDE_INT) offset - < GET_MODE_ALIGNMENT (GET_MODE (memref)) / BITS_PER_UNIT) + if (GET_MODE (memref) != BLKmode && GET_CODE (addr) == LO_SUM + && offset >= 0 + && (unsigned HOST_WIDE_INT) offset + < GET_MODE_ALIGNMENT (GET_MODE (memref)) / BITS_PER_UNIT) addr = gen_rtx_LO_SUM (Pmode, XEXP (addr, 0), plus_constant (XEXP (addr, 1), offset)); else |