diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 11 |
2 files changed, 11 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2932e8c..505c799 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Dec 6 15:12:14 1999 Jim Wilson <wilson@cygnus.com> + + * combine.c (force_to_mode, case LSHIFTRT): New local inner_mask. Set + inner_mask instead of mask. + 1999-12-06 Brendan Kehoe <brendan@cygnus.com> * dwarf2out.c (field_byte_offset): As with dwarfout.c, size can be diff --git a/gcc/combine.c b/gcc/combine.c index 825d8a7..c3864e0 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6815,18 +6815,19 @@ force_to_mode (x, mode, mask, reg, just_select) && GET_MODE_BITSIZE (op_mode) <= HOST_BITS_PER_WIDE_INT) { rtx inner = XEXP (x, 0); + unsigned HOST_WIDE_INT inner_mask; /* Select the mask of the bits we need for the shift operand. */ - mask <<= INTVAL (XEXP (x, 1)); + inner_mask = mask << INTVAL (XEXP (x, 1)); /* We can only change the mode of the shift if we can do arithmetic - in the mode of the shift and MASK is no wider than the width of - OP_MODE. */ + in the mode of the shift and INNER_MASK is no wider than the + width of OP_MODE. */ if (GET_MODE_BITSIZE (op_mode) > HOST_BITS_PER_WIDE_INT - || (mask & ~ GET_MODE_MASK (op_mode)) != 0) + || (inner_mask & ~ GET_MODE_MASK (op_mode)) != 0) op_mode = GET_MODE (x); - inner = force_to_mode (inner, op_mode, mask, reg, next_select); + inner = force_to_mode (inner, op_mode, inner_mask, reg, next_select); if (GET_MODE (x) != op_mode || inner != XEXP (x, 0)) x = gen_binary (LSHIFTRT, op_mode, inner, XEXP (x, 1)); |