diff options
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 91fb489..1390ad9 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -4508,6 +4508,7 @@ canonicalize_condition (rtx insn, rtx cond, int reverse, rtx *earliest, rtx op0, op1; int reverse_code = 0; enum machine_mode mode; + basic_block bb = BLOCK_FOR_INSN (insn); code = GET_CODE (cond); mode = GET_MODE (cond); @@ -4569,7 +4570,11 @@ canonicalize_condition (rtx insn, rtx cond, int reverse, rtx *earliest, if ((prev = prev_nonnote_insn (prev)) == 0 || !NONJUMP_INSN_P (prev) - || FIND_REG_INC_NOTE (prev, NULL_RTX)) + || FIND_REG_INC_NOTE (prev, NULL_RTX) + /* In cfglayout mode, there do not have to be labels at the + beginning of a block, or jumps at the end, so the previous + conditions would not stop us when we reach bb boundary. */ + || BLOCK_FOR_INSN (prev) != bb) break; set = set_of (op0, prev); |