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| author | Roger Sayle <roger@eyesopen.com> | 2003-01-15 17:32:38 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-01-15 17:32:38 +0000 |
| commit | 9ee0a4426da5d2664a2bf75b4fb7e36dded7f230 (patch) | |
| tree | c62a976a42c04eee74b528e74a2cf9263b1298d3 /gcc/optabs.c | |
| parent | e3981aabf2789a22086f81899a1bf8e8d090b020 (diff) | |
| download | gcc-9ee0a4426da5d2664a2bf75b4fb7e36dded7f230.zip gcc-9ee0a4426da5d2664a2bf75b4fb7e36dded7f230.tar.gz gcc-9ee0a4426da5d2664a2bf75b4fb7e36dded7f230.tar.bz2 | |
re PR middle-end/9009 (floating-point negate and abs optimizations incorrect for ARM)
PR middle-end/9009
* optabs.c (expand_unop): When manipulating the FP sign bit
using integer operations, account for targets with different
integer and FP word orders.
(expand_abs): Likewise.
From-SVN: r61335
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index d8c058e..38cc7e7 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -1,6 +1,6 @@ /* Expand the basic unary and binary arithmetic operations, for GNU compiler. Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2003 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GCC. @@ -2530,6 +2530,14 @@ expand_unop (mode, unoptab, op0, target, unsignedp) HOST_WIDE_INT hi, lo; rtx last = get_last_insn (); + /* Handle targets with different FP word orders. */ + if (FLOAT_WORDS_BIG_ENDIAN != WORDS_BIG_ENDIAN) + { + int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD; + int word = nwords - (bitpos / BITS_PER_WORD) - 1; + bitpos = word * BITS_PER_WORD + bitpos % BITS_PER_WORD; + } + if (bitpos < HOST_BITS_PER_WIDE_INT) { hi = 0; @@ -2675,6 +2683,14 @@ expand_abs (mode, op0, target, result_unsignedp, safe) HOST_WIDE_INT hi, lo; rtx last = get_last_insn (); + /* Handle targets with different FP word orders. */ + if (FLOAT_WORDS_BIG_ENDIAN != WORDS_BIG_ENDIAN) + { + int nwords = GET_MODE_BITSIZE (mode) / BITS_PER_WORD; + int word = nwords - (bitpos / BITS_PER_WORD) - 1; + bitpos = word * BITS_PER_WORD + bitpos % BITS_PER_WORD; + } + if (bitpos < HOST_BITS_PER_WIDE_INT) { hi = 0; |