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| author | Jim Wilson <wilson@gcc.gnu.org> | 1993-08-09 12:37:23 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1993-08-09 12:37:23 -0700 |
| commit | 211b330fd8f17c6be56de8048edb5ab0a1633220 (patch) | |
| tree | c70cbdc01f8eabb3eda2a4c0ee930416052b278e /gcc/sched.c | |
| parent | 256f27acc15d3048f82c0479b7df03f68d736cf1 (diff) | |
| download | gcc-211b330fd8f17c6be56de8048edb5ab0a1633220.zip gcc-211b330fd8f17c6be56de8048edb5ab0a1633220.tar.gz gcc-211b330fd8f17c6be56de8048edb5ab0a1633220.tar.bz2 | |
(schedule_insns): Don't emit a NOTE at the end of the last basic block if...
(schedule_insns): Don't emit a NOTE at the end of the last
basic block if that would put it between a JUMP_INSN and a BARRIER.
From-SVN: r5121
Diffstat (limited to 'gcc/sched.c')
| -rw-r--r-- | gcc/sched.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/sched.c b/gcc/sched.c index 9da35d0..48b13ff 100644 --- a/gcc/sched.c +++ b/gcc/sched.c @@ -4497,9 +4497,17 @@ schedule_insns (dump_file) /* Schedule each basic block, block by block. */ - if (NEXT_INSN (basic_block_end[n_basic_blocks-1]) == 0 - || (GET_CODE (basic_block_end[n_basic_blocks-1]) != NOTE - && GET_CODE (basic_block_end[n_basic_blocks-1]) != CODE_LABEL)) + /* ??? Add a NOTE after the last insn of the last basic block. It is not + known why this is done. */ + + insn = basic_block_end[n_basic_blocks-1]; + if (NEXT_INSN (insn) == 0 + || (GET_CODE (insn) != NOTE + && GET_CODE (insn) != CODE_LABEL + /* Don't emit a NOTE if it would end up between an unconditional + jump and a BARRIER. */ + && ! (GET_CODE (insn) == JUMP_INSN + && GET_CODE (NEXT_INSN (insn)) == BARRIER))) emit_note_after (NOTE_INSN_DELETED, basic_block_end[n_basic_blocks-1]); for (b = 0; b < n_basic_blocks; b++) |