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(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
This commit is contained in:
Jim Wilson 1993-08-09 12:37:23 -07:00
parent 256f27acc1
commit 211b330fd8
1 changed files with 11 additions and 3 deletions
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14
gcc/sched.c
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@ -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++)