diff options
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index ba8a3d6cf24..9211c087537 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -97,8 +97,6 @@ rtx global_rtl[GR_MAX]; at the beginning of each function. */ static GTY(()) rtx static_regno_reg_rtx[FIRST_PSEUDO_REGISTER]; -rtx (*gen_lowpart) (enum machine_mode mode, rtx x) = gen_lowpart_general; - /* We record floating-point CONST_DOUBLEs in each floating-point mode for the values of 0, 1, and 2. For the integer entries and VOIDmode, we record a copy of const[012]_rtx. */ @@ -1124,62 +1122,6 @@ gen_imagpart (enum machine_mode mode, rtx x) return gen_highpart (mode, x); } -/* Assuming that X is an rtx (e.g., MEM, REG or SUBREG) for a value, - return an rtx (MEM, SUBREG, or CONST_INT) that refers to the - least-significant part of X. - MODE specifies how big a part of X to return; - it usually should not be larger than a word. - If X is a MEM whose address is a QUEUED, the value may be so also. */ - -rtx -gen_lowpart_general (enum machine_mode mode, rtx x) -{ - rtx result = gen_lowpart_common (mode, x); - - if (result) - return result; - else if (GET_CODE (x) == REG) - { - /* Must be a hard reg that's not valid in MODE. */ - result = gen_lowpart_common (mode, copy_to_reg (x)); - if (result == 0) - abort (); - return result; - } - else if (GET_CODE (x) == MEM) - { - /* The only additional case we can do is MEM. */ - int offset = 0; - - /* The following exposes the use of "x" to CSE. */ - if (GET_MODE_SIZE (GET_MODE (x)) <= UNITS_PER_WORD - && SCALAR_INT_MODE_P (GET_MODE (x)) - && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode), - GET_MODE_BITSIZE (GET_MODE (x))) - && ! no_new_pseudos) - return gen_lowpart (mode, force_reg (GET_MODE (x), x)); - - if (WORDS_BIG_ENDIAN) - offset = (MAX (GET_MODE_SIZE (GET_MODE (x)), UNITS_PER_WORD) - - MAX (GET_MODE_SIZE (mode), UNITS_PER_WORD)); - - if (BYTES_BIG_ENDIAN) - /* Adjust the address so that the address-after-the-data - is unchanged. */ - offset -= (MIN (UNITS_PER_WORD, GET_MODE_SIZE (mode)) - - MIN (UNITS_PER_WORD, GET_MODE_SIZE (GET_MODE (x)))); - - return adjust_address (x, mode, offset); - } - else if (GET_CODE (x) == ADDRESSOF) - return gen_lowpart (mode, force_reg (GET_MODE (x), x)); - else - abort (); -} - -/* Like `gen_lowpart', but refer to the most significant part. - This is used to access the imaginary part of a complex number. */ - rtx gen_highpart (enum machine_mode mode, rtx x) { |