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| author | Jakub Jelinek <jakub@redhat.com> | 2005-11-30 09:30:48 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2005-11-30 09:30:48 +0100 |
| commit | dca1376799471fb6005a43f3a8836f45db5b78c9 (patch) | |
| tree | 2ff459897fcf3a55dff290861694d525f3e7f9cf | |
| parent | 1941069a58da0f4d4c8a126c0374387dc50a02d6 (diff) | |
| download | gcc-dca1376799471fb6005a43f3a8836f45db5b78c9.zip gcc-dca1376799471fb6005a43f3a8836f45db5b78c9.tar.gz gcc-dca1376799471fb6005a43f3a8836f45db5b78c9.tar.bz2 | |
ia64.c (ia64_expand_atomic_op): Only use fetchadd{4,8}.acq instruction if CODE is PLUS or MINUS...
* config/ia64/ia64.c (ia64_expand_atomic_op): Only use
fetchadd{4,8}.acq instruction if CODE is PLUS or MINUS, for MINUS
negate VAL.
From-SVN: r107703
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/ia64/ia64.c | 7 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1dee38e..b7067e9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-11-30 Jakub Jelinek <jakub@redhat.com> + + * config/ia64/ia64.c (ia64_expand_atomic_op): Only use + fetchadd{4,8}.acq instruction if CODE is PLUS or MINUS, for MINUS + negate VAL. + 2005-11-30 Paolo Bonzini <bonzini@gnu.org> * simplify-rtx.c (simplify_plus_minus): Remove final parameter. diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 7267625..a07cc6e 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -2039,8 +2039,13 @@ ia64_expand_atomic_op (enum rtx_code code, rtx mem, rtx val, enum insn_code icode; /* Special case for using fetchadd. */ - if ((mode == SImode || mode == DImode) && fetchadd_operand (val, mode)) + if ((mode == SImode || mode == DImode) + && (code == PLUS || code == MINUS) + && fetchadd_operand (val, mode)) { + if (code == MINUS) + val = GEN_INT (-INTVAL (val)); + if (!old_dst) old_dst = gen_reg_rtx (mode); |