diff options
Diffstat (limited to 'gcc/jump.c')
| -rw-r--r-- | gcc/jump.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/jump.c b/gcc/jump.c index 50a69c59fc0..389a6ff1e64 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -2403,10 +2403,18 @@ duplicate_loop_exit_test (loop_start) This can be avoided by checking here for NOTE_INSN_LOOP_CONT. */ if (NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_BEG - || NOTE_LINE_NUMBER (insn) == NOTE_INSN_BLOCK_BEG - || NOTE_LINE_NUMBER (insn) == NOTE_INSN_BLOCK_END || NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_CONT) return 0; + + if (optimize < 2 + && (NOTE_LINE_NUMBER (insn) == NOTE_INSN_BLOCK_BEG + || NOTE_LINE_NUMBER (insn) == NOTE_INSN_BLOCK_END)) + /* If we were to duplicate this code, we would not move + the BLOCK notes, and so debugging the moved code would + be difficult. Thus, we only move the code with -O2 or + higher. */ + return 0; + break; case JUMP_INSN: case INSN: |