diff options
| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-10-13 09:32:29 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-10-13 09:32:29 +0000 |
| commit | 90f2b7e220df8ce298b2cd8f853a02aaecdbff0b (patch) | |
| tree | e6e6b7a6cd37b119b1118babd9d53aa30d191bde /gcc/rtlhooks.c | |
| parent | 610c45fcbfff43176beefefcea74c6137a432220 (diff) | |
| download | gcc-90f2b7e220df8ce298b2cd8f853a02aaecdbff0b.zip gcc-90f2b7e220df8ce298b2cd8f853a02aaecdbff0b.tar.gz gcc-90f2b7e220df8ce298b2cd8f853a02aaecdbff0b.tar.bz2 | |
Make more use of byte_lowpart_offset
This patch uses byte_lowpart_offset in places that open-coded the
calculation.
2017-10-13 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* caller-save.c (replace_reg_with_saved_mem): Use byte_lowpart_offset.
* combine.c (gen_lowpart_for_combine): Likewise.
* dwarf2out.c (rtl_for_decl_location): Likewise.
* final.c (alter_subreg): Likewise.
* rtlhooks.c (gen_lowpart_general): Likewise.
(gen_lowpart_if_possible): Likewise.
Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r253714
Diffstat (limited to 'gcc/rtlhooks.c')
| -rw-r--r-- | gcc/rtlhooks.c | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/gcc/rtlhooks.c b/gcc/rtlhooks.c index 4d04ebd..d20815e 100644 --- a/gcc/rtlhooks.c +++ b/gcc/rtlhooks.c @@ -59,8 +59,6 @@ gen_lowpart_general (machine_mode mode, rtx x) } else { - int offset = 0; - /* The only additional case we can do is MEM. */ gcc_assert (MEM_P (x)); @@ -72,16 +70,7 @@ gen_lowpart_general (machine_mode mode, rtx x) && !reload_completed) return gen_lowpart_general (mode, force_reg (xmode, 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)))); - + HOST_WIDE_INT offset = byte_lowpart_offset (mode, GET_MODE (x)); return adjust_address (x, mode, offset); } } @@ -126,19 +115,8 @@ gen_lowpart_if_possible (machine_mode mode, rtx x) else if (MEM_P (x)) { /* This is the only other case we handle. */ - int offset = 0; - rtx new_rtx; - - 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)))); - - new_rtx = adjust_address_nv (x, mode, offset); + HOST_WIDE_INT offset = byte_lowpart_offset (mode, GET_MODE (x)); + rtx new_rtx = adjust_address_nv (x, mode, offset); if (! memory_address_addr_space_p (mode, XEXP (new_rtx, 0), MEM_ADDR_SPACE (x))) return 0; |