From 2bd1333d629dababe7b7d18c46d59c0489929e8b Mon Sep 17 00:00:00 2001 From: Anatoly Sokolov Date: Thu, 15 Apr 2010 02:05:32 +0400 Subject: double-int.h (HOST_BITS_PER_DOUBLE_INT): Define. * double-int.h (HOST_BITS_PER_DOUBLE_INT): Define. (double_int_not, double_int_lshift, double_int_rshift): Declare. (double_int_negative_p): Convert to static inline function. * double-int.c (double_int_lshift, double_int_lshift): Add new function. (double_int_negative_p): Remove. * tree.h (lshift_double, rshift_double): * tree.c (build_low_bits_mask): Clean up, use double_int_* functions. * fold-const.c (fold_convert_const_int_from_real, fold_convert_const_int_from_fixed, div_if_zero_remainder): (Ditto.). (lshift_double): Change type of arith argument to bool. (rshift_double): Change type of arith argument to bool. Correct comment. * expmed.c (mask_rtx, lshift_value): (Ditto.). From-SVN: r158360 --- gcc/tree.c | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) (limited to 'gcc/tree.c') diff --git a/gcc/tree.c b/gcc/tree.c index 5da8206..83f1237 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -1221,32 +1221,18 @@ build_int_cst_wide (tree type, unsigned HOST_WIDE_INT low, HOST_WIDE_INT hi) tree build_low_bits_mask (tree type, unsigned bits) { - unsigned HOST_WIDE_INT low; - HOST_WIDE_INT high; - unsigned HOST_WIDE_INT all_ones = ~(unsigned HOST_WIDE_INT) 0; + double_int mask; gcc_assert (bits <= TYPE_PRECISION (type)); if (bits == TYPE_PRECISION (type) && !TYPE_UNSIGNED (type)) - { - /* Sign extended all-ones mask. */ - low = all_ones; - high = -1; - } - else if (bits <= HOST_BITS_PER_WIDE_INT) - { - low = all_ones >> (HOST_BITS_PER_WIDE_INT - bits); - high = 0; - } + /* Sign extended all-ones mask. */ + mask = double_int_minus_one; else - { - bits -= HOST_BITS_PER_WIDE_INT; - low = all_ones; - high = all_ones >> (HOST_BITS_PER_WIDE_INT - bits); - } + mask = double_int_mask (bits); - return build_int_cst_wide (type, low, high); + return build_int_cst_wide (type, mask.low, mask.high); } /* Checks that X is integer constant that can be expressed in (unsigned) -- cgit v1.1