diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 597aa80..5c763b4 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -13684,6 +13684,11 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2, || rtx_equal_p (XEXP (note, 0), elim_i0)) break; tem_insn = i3; + /* If the new I2 sets the same register that is marked dead + in the note, the note now should not be put on I2, as the + note refers to a previous incarnation of the reg. */ + if (i2 != 0 && reg_set_p (XEXP (note, 0), PATTERN (i2))) + tem_insn = i2; } if (place == 0) |