diff options
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 9026472724c..8da98f5dc79 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1566,6 +1566,55 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, return op0; } + /* First try to check for vector from vector extractions. */ + if (VECTOR_MODE_P (GET_MODE (op0)) + && !MEM_P (op0) + && VECTOR_MODE_P (tmode) + && GET_MODE_SIZE (GET_MODE (op0)) > GET_MODE_SIZE (tmode)) + { + machine_mode new_mode = GET_MODE (op0); + if (GET_MODE_INNER (new_mode) != GET_MODE_INNER (tmode)) + { + new_mode = mode_for_vector (GET_MODE_INNER (tmode), + GET_MODE_BITSIZE (GET_MODE (op0)) + / GET_MODE_UNIT_BITSIZE (tmode)); + if (!VECTOR_MODE_P (new_mode) + || GET_MODE_SIZE (new_mode) != GET_MODE_SIZE (GET_MODE (op0)) + || GET_MODE_INNER (new_mode) != GET_MODE_INNER (tmode) + || !targetm.vector_mode_supported_p (new_mode)) + new_mode = VOIDmode; + } + if (new_mode != VOIDmode + && (convert_optab_handler (vec_extract_optab, new_mode, tmode) + != CODE_FOR_nothing) + && ((bitnum + bitsize - 1) / GET_MODE_BITSIZE (tmode) + == bitnum / GET_MODE_BITSIZE (tmode))) + { + struct expand_operand ops[3]; + machine_mode outermode = new_mode; + machine_mode innermode = tmode; + enum insn_code icode + = convert_optab_handler (vec_extract_optab, outermode, innermode); + unsigned HOST_WIDE_INT pos = bitnum / GET_MODE_BITSIZE (innermode); + + if (new_mode != GET_MODE (op0)) + op0 = gen_lowpart (new_mode, op0); + create_output_operand (&ops[0], target, innermode); + ops[0].target = 1; + create_input_operand (&ops[1], op0, outermode); + create_integer_operand (&ops[2], pos); + if (maybe_expand_insn (icode, 3, ops)) + { + if (alt_rtl && ops[0].target) + *alt_rtl = target; + target = ops[0].value; + if (GET_MODE (target) != mode) + return gen_lowpart (tmode, target); + return target; + } + } + } + /* See if we can get a better vector mode before extracting. */ if (VECTOR_MODE_P (GET_MODE (op0)) && !MEM_P (op0) @@ -1599,14 +1648,17 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, available. */ if (VECTOR_MODE_P (GET_MODE (op0)) && !MEM_P (op0) - && optab_handler (vec_extract_optab, GET_MODE (op0)) != CODE_FOR_nothing + && (convert_optab_handler (vec_extract_optab, GET_MODE (op0), + GET_MODE_INNER (GET_MODE (op0))) + != CODE_FOR_nothing) && ((bitnum + bitsize - 1) / GET_MODE_UNIT_BITSIZE (GET_MODE (op0)) == bitnum / GET_MODE_UNIT_BITSIZE (GET_MODE (op0)))) { struct expand_operand ops[3]; machine_mode outermode = GET_MODE (op0); machine_mode innermode = GET_MODE_INNER (outermode); - enum insn_code icode = optab_handler (vec_extract_optab, outermode); + enum insn_code icode + = convert_optab_handler (vec_extract_optab, outermode, innermode); unsigned HOST_WIDE_INT pos = bitnum / GET_MODE_BITSIZE (innermode); create_output_operand (&ops[0], target, innermode); |