diff options
| author | J"orn Rennecke <joern.rennecke@superh.com> | 2002-07-16 10:59:15 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 2002-07-16 11:59:15 +0100 |
| commit | cffa218913174469e453f61c76e85b7c6f9ed74f (patch) | |
| tree | 0b00a805101ffc0866f51c0f8db081dde5a27ea9 /gcc/regrename.c | |
| parent | 052c96b1b05f5b170c38a927cf92c38e07d29791 (diff) | |
| download | gcc-cffa218913174469e453f61c76e85b7c6f9ed74f.zip gcc-cffa218913174469e453f61c76e85b7c6f9ed74f.tar.gz gcc-cffa218913174469e453f61c76e85b7c6f9ed74f.tar.bz2 | |
expr.c (emit_move_insn_1): Handle arbitrary moves that are the same size as a word.
* expr.c (emit_move_insn_1): Handle arbitrary moves that are
the same size as a word.
* regrename.c (find_oldest_value_reg): Take WORDS_BIG_ENDIAN /
BYTES_BIG_ENDIAN into account.
From-SVN: r55482
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index ffe170e..532d575 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -1335,14 +1335,26 @@ find_oldest_value_reg (class, reg, vd) } for (i = vd->e[regno].oldest_regno; i != regno; i = vd->e[i].next_regno) + { + enum machine_mode oldmode = vd->e[i].mode; + if (TEST_HARD_REG_BIT (reg_class_contents[class], i) - && (vd->e[i].mode == mode - || mode_change_ok (vd->e[i].mode, mode, i))) + && (oldmode == mode + || mode_change_ok (oldmode, mode, i))) { - rtx new = gen_rtx_raw_REG (mode, i); + int offset = GET_MODE_SIZE (oldmode) - GET_MODE_SIZE (mode); + int byteoffset = offset % UNITS_PER_WORD; + int wordoffset = offset - byteoffset; + rtx new; + + offset = ((WORDS_BIG_ENDIAN ? wordoffset : 0) + + (BYTES_BIG_ENDIAN ? byteoffset : 0)); + new = (gen_rtx_raw_REG + (mode, i + subreg_regno_offset (i, oldmode, offset, mode))); ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg); return new; } + } return NULL_RTX; } |