diff options
| author | Jeffrey A Law <law@cygnus.com> | 1999-04-07 13:22:29 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-04-07 07:22:29 -0600 |
| commit | 94d5c4563ffc5fdb44851687b3531d5fd4a0d2cc (patch) | |
| tree | 842879527821198c1034c16f3cb5adf0d4483640 | |
| parent | 6ed173d03b97ef5657f2d316235674ae0f61f812 (diff) | |
| download | gcc-94d5c4563ffc5fdb44851687b3531d5fd4a0d2cc.zip gcc-94d5c4563ffc5fdb44851687b3531d5fd4a0d2cc.tar.gz gcc-94d5c4563ffc5fdb44851687b3531d5fd4a0d2cc.tar.bz2 | |
unroll.c (copy_loop_body): Always ensure at least two insns are in the copied loop.
* unroll.c (copy_loop_body): Always ensure at least two insns
are in the copied loop.
From-SVN: r26261
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/unroll.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index da8276f..d33bd4b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Wed Apr 7 14:07:34 1999 Jeffrey A Law (law@cygnus.com) + + * unroll.c (copy_loop_body): Always ensure at least two insns + are in the copied loop. + Wed Apr 7 14:52:18 1999 Catherine Moore <clm@cygnus.com> * config/mips/elf.h (MAKE_DECL_ONE_ONLY): Define. diff --git a/gcc/unroll.c b/gcc/unroll.c index e119352..9c0109d 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -1671,6 +1671,12 @@ copy_loop_body (copy_start, copy_end, map, exit_label, last_iteration, start_sequence (); + /* Emit a NOTE_INSN_DELETED to force at least two insns onto the sequence. + Else gen_sequence could return a raw pattern for a jump which we pass + off to emit_insn_before (instead of emit_jump_insn_before) which causes + a variety of losing behaviors later. */ + emit_note (0, NOTE_INSN_DELETED); + insn = copy_start; do { |