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| author | Roger Sayle <roger@eyesopen.com> | 2004-08-03 21:24:32 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2004-08-03 21:24:32 +0000 |
| commit | a0fac73d2b6a463a96c93d8ea37d1c33e605aa93 (patch) | |
| tree | 0b16b01e23d9aa185acb22cc027765bf8cef2029 /gcc/fold-const.c | |
| parent | 5357b1f9df2a6613d463096a8808f34a4ee6f60e (diff) | |
| download | gcc-a0fac73d2b6a463a96c93d8ea37d1c33e605aa93.zip gcc-a0fac73d2b6a463a96c93d8ea37d1c33e605aa93.tar.gz gcc-a0fac73d2b6a463a96c93d8ea37d1c33e605aa93.tar.bz2 | |
re PR middle-end/16790 (Integer down cast ignored in larger expression)
PR middle-end/16790
* fold-const.c (extract_muldiv_1) <NOP_EXPR>: Disallow local
truncations, not just global truncations.
* gcc.c-torture/execute/pr16790-1.c: New test case.
From-SVN: r85506
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index f4a6fb0..503b6f0 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -5102,9 +5102,9 @@ extract_muldiv_1 (tree t, tree c, enum tree_code code, tree wide_type) && TYPE_IS_SIZETYPE (TREE_TYPE (op0))) && (GET_MODE_SIZE (TYPE_MODE (ctype)) > GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (op0))))) - /* ... or its type is larger than ctype, - then we cannot pass through this truncation. */ - || (GET_MODE_SIZE (TYPE_MODE (ctype)) + /* ... or this is a truncation (t is narrower than op0), + then we cannot pass through this narrowing. */ + || (GET_MODE_SIZE (TYPE_MODE (type)) < GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (op0)))) /* ... or signedness changes for division or modulus, then we cannot pass through this conversion. */ |