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| author | Roger Sayle <roger@eyesopen.com> | 2006-03-29 22:40:17 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-03-29 22:40:17 +0000 |
| commit | a6a12bb9de5452dcd08dfe62432ebf4ab8c3e04f (patch) | |
| tree | ca10d5eb72bc1f5de3fd9b33542544396b8a4e5b | |
| parent | 68441323e2cc02348391d8108fbe22c34aab56f4 (diff) | |
| download | gcc-a6a12bb9de5452dcd08dfe62432ebf4ab8c3e04f.zip gcc-a6a12bb9de5452dcd08dfe62432ebf4ab8c3e04f.tar.gz gcc-a6a12bb9de5452dcd08dfe62432ebf4ab8c3e04f.tar.bz2 | |
stor-layout.c (mode_for_size_tree): Remove restiction on type sizes by correctly testing whether the size fits a...
* stor-layout.c (mode_for_size_tree): Remove restiction on type
sizes by correctly testing whether the size fits a host integer.
(initialize_sizetypes): Use set_min_and_max_values_for_integral_type
to correctly set TYPE_MIN_VALUE and TYPE_MAX_VALUE to the full
SImode range for the default sizetype and bitsizetype.
From-SVN: r112513
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/stor-layout.c | 28 |
2 files changed, 22 insertions, 14 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b028b30..3448d7b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,13 @@ 2006-03-29 Roger Sayle <roger@eyesopen.com> + * stor-layout.c (mode_for_size_tree): Remove restiction on type + sizes by correctly testing whether the size fits a host integer. + (initialize_sizetypes): Use set_min_and_max_values_for_integral_type + to correctly set TYPE_MIN_VALUE and TYPE_MAX_VALUE to the full + SImode range for the default sizetype and bitsizetype. + +2006-03-29 Roger Sayle <roger@eyesopen.com> + * convert.c (convert_to_pointer): Preserve the TREE_OVERFLOW and TREE_CONSTANT_OVERFLOW bits of the argument. Return quickly if the argument is already of the correct type. diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 5617d27..723e0689 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -190,15 +190,16 @@ mode_for_size (unsigned int size, enum mode_class class, int limit) enum machine_mode mode_for_size_tree (tree size, enum mode_class class, int limit) { - if (TREE_CODE (size) != INTEGER_CST - || TREE_OVERFLOW (size) - /* What we really want to say here is that the size can fit in a - host integer, but we know there's no way we'd find a mode for - this many bits, so there's no point in doing the precise test. */ - || compare_tree_int (size, 1000) > 0) + unsigned HOST_WIDE_INT uhwi; + unsigned int ui; + + if (!host_integerp (size, 1)) return BLKmode; - else - return mode_for_size (tree_low_cst (size, 1), class, limit); + uhwi = tree_low_cst (size, 1); + ui = uhwi; + if (uhwi != ui) + return BLKmode; + return mode_for_size (ui, class, limit); } /* Similar, but never return BLKmode; return the narrowest mode that @@ -1938,20 +1939,19 @@ void initialize_sizetypes (bool signed_p) { tree t = make_node (INTEGER_TYPE); + int precision = GET_MODE_BITSIZE (SImode); TYPE_MODE (t) = SImode; TYPE_ALIGN (t) = GET_MODE_ALIGNMENT (SImode); TYPE_USER_ALIGN (t) = 0; TYPE_IS_SIZETYPE (t) = 1; TYPE_UNSIGNED (t) = !signed_p; - TYPE_SIZE (t) = build_int_cst (t, GET_MODE_BITSIZE (SImode)); + TYPE_SIZE (t) = build_int_cst (t, precision); TYPE_SIZE_UNIT (t) = build_int_cst (t, GET_MODE_SIZE (SImode)); - TYPE_PRECISION (t) = GET_MODE_BITSIZE (SImode); - TYPE_MIN_VALUE (t) = build_int_cst (t, 0); + TYPE_PRECISION (t) = precision; - /* 1000 avoids problems with possible overflow and is certainly - larger than any size value we'd want to be storing. */ - TYPE_MAX_VALUE (t) = build_int_cst (t, 1000); + /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE. */ + set_min_and_max_values_for_integral_type (t, precision, !signed_p); sizetype = t; bitsizetype = build_distinct_type_copy (t); |