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| author | Richard Henderson <rth@cygnus.com> | 2000-05-06 14:50:03 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-05-06 14:50:03 -0700 |
| commit | 02a749ecc36f4c119b02ebb54377db90d09c0774 (patch) | |
| tree | 23f0f6da1acf59fb1fd9a7d3436a260396f6eb83 | |
| parent | 65189757c0fa149737e2401358372b3f43c64633 (diff) | |
| download | gcc-02a749ecc36f4c119b02ebb54377db90d09c0774.zip gcc-02a749ecc36f4c119b02ebb54377db90d09c0774.tar.gz gcc-02a749ecc36f4c119b02ebb54377db90d09c0774.tar.bz2 | |
ifcvt.c (noce_process_if_block): Don't use an insn_b from test_bb if a or b uses x.
* ifcvt.c (noce_process_if_block): Don't use an insn_b from
test_bb if a or b uses x.
From-SVN: r33738
| -rw-r--r-- | gcc/ChangeLog | 2 | ||||
| -rw-r--r-- | gcc/ifcvt.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index af787c6..5a589bb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -6,7 +6,7 @@ * flow.c (mark_set_1): Respect not_dead when updating reg_live. * ifcvt.c (noce_process_if_block): Don't use an insn_b from - test_bb if insn_a uses x. + test_bb if a or b uses x. 2000-05-06 Zack Weinberg <zack@wolery.cumb.org> diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index 25558f3..9b66d59 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -1079,7 +1079,8 @@ noce_process_if_block (test_bb, then_bb, else_bb, join_bb) || (set_b = single_set (insn_b)) == NULL_RTX || ! rtx_equal_p (x, SET_DEST (set_b)) || reg_mentioned_p (x, cond) - || reg_mentioned_p (x, a)) + || reg_mentioned_p (x, a) + || reg_mentioned_p (x, SET_SRC (set_b))) insn_b = set_b = NULL_RTX; } b = (set_b ? SET_SRC (set_b) : x); |