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| author | Richard Henderson <rth@redhat.com> | 2002-01-23 23:36:18 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-01-23 23:36:18 -0800 |
| commit | f3077311c4fbead462e28f646910039165076cc3 (patch) | |
| tree | 11e6c50d2f8635688147c231a54bb4d34f8163e8 /gcc/fold-const.c | |
| parent | ddd69607433a8cd05cf50c524746bea197205b6d (diff) | |
| download | gcc-f3077311c4fbead462e28f646910039165076cc3.zip gcc-f3077311c4fbead462e28f646910039165076cc3.tar.gz gcc-f3077311c4fbead462e28f646910039165076cc3.tar.bz2 | |
fold-const.c (fold): Change UINT_MAX test to check vs precision rather than TYPE_MAX_VALUE.
* fold-const.c (fold): Change UINT_MAX test to check vs precision
rather than TYPE_MAX_VALUE. Fix indentation and a bogus negation.
From-SVN: r49174
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index dec382d..2f0d4ac 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -6703,7 +6703,7 @@ fold (expr) } else if (TREE_INT_CST_HIGH (arg1) == -1 - && (- TREE_INT_CST_LOW (arg1) + && (TREE_INT_CST_LOW (arg1) == ((unsigned HOST_WIDE_INT) 1 << (width - 1))) && ! TREE_UNSIGNED (TREE_TYPE (arg1))) switch (TREE_CODE (t)) @@ -6729,12 +6729,11 @@ fold (expr) } else if (TREE_INT_CST_HIGH (arg1) == 0 - && (TREE_INT_CST_LOW (arg1) - == ((unsigned HOST_WIDE_INT) 1 << (width - 1)) - 1) - && TREE_UNSIGNED (TREE_TYPE (arg1)) - /* signed_type does not work on pointer types. */ - && INTEGRAL_TYPE_P (TREE_TYPE (arg1))) - + && (TREE_INT_CST_LOW (arg1) + == ((unsigned HOST_WIDE_INT) 1 << (width - 1)) - 1) + && TREE_UNSIGNED (TREE_TYPE (arg1)) + /* signed_type does not work on pointer types. */ + && INTEGRAL_TYPE_P (TREE_TYPE (arg1))) switch (TREE_CODE (t)) { case LE_EXPR: @@ -6754,9 +6753,10 @@ fold (expr) break; } - else if (TREE_UNSIGNED (TREE_TYPE (arg1)) - && tree_int_cst_equal (TYPE_MAX_VALUE (TREE_TYPE (arg1)), - arg1)) + else if (TREE_INT_CST_HIGH (arg1) == 0 + && (TREE_INT_CST_LOW (arg1) + == ((unsigned HOST_WIDE_INT) 2 << (width - 1)) - 1) + && TREE_UNSIGNED (TREE_TYPE (arg1))) switch (TREE_CODE (t)) { case GT_EXPR: |