diff options
Diffstat (limited to 'gcc/ext-dce.cc')
| -rw-r--r-- | gcc/ext-dce.cc | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/gcc/ext-dce.cc b/gcc/ext-dce.cc index afe7afe..67ec92a 100644 --- a/gcc/ext-dce.cc +++ b/gcc/ext-dce.cc @@ -651,9 +651,8 @@ ext_dce_process_uses (rtx_insn *insn, rtx obj, /* ?!? How much of this should mirror SET handling, potentially being shared? */ - if (SUBREG_P (dst) && SUBREG_BYTE (dst).is_constant ()) + if (SUBREG_P (dst) && subreg_lsb (dst).is_constant (&bit)) { - bit = subreg_lsb (dst).to_constant (); if (bit >= HOST_BITS_PER_WIDE_INT) bit = HOST_BITS_PER_WIDE_INT - 1; dst = SUBREG_REG (dst); @@ -758,7 +757,7 @@ ext_dce_process_uses (rtx_insn *insn, rtx obj, and process the inner object. */ if (paradoxical_subreg_p (y)) y = XEXP (y, 0); - else if (SUBREG_P (y) && SUBREG_BYTE (y).is_constant ()) + else if (SUBREG_P (y) && subreg_lsb (y).is_constant (&bit)) { /* If !TRULY_NOOP_TRUNCATION_MODES_P, the mode change performed by Y would normally need to be a @@ -775,8 +774,6 @@ ext_dce_process_uses (rtx_insn *insn, rtx obj, GET_MODE (SUBREG_REG (y)))))) break; - bit = subreg_lsb (y).to_constant (); - /* If this is a wide object (more bits than we can fit in a HOST_WIDE_INT), then just break from the SET context. That will cause the iterator to walk down |