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| author | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-04-26 19:35:33 +0000 |
|---|---|---|
| committer | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-04-26 19:35:33 +0000 |
| commit | 1453bbdecd828fb05317fc05ac6a3ac1dc5d9c10 (patch) | |
| tree | 1db5ca96a007933eeb8608cdeefdc679084e4829 /gcc/tree.c | |
| parent | 18a5bd9103cd54671ccafddd841d2af24f57af31 (diff) | |
| download | gcc-1453bbdecd828fb05317fc05ac6a3ac1dc5d9c10.tar.gz | |
* tree.c (tree_int_cst_lt): Compare constants whose types differ
in unsigned-ness correctly.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@52802 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/tree.c b/gcc/tree.c index 450dd19cc04..4ec4bd04e86 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -3230,7 +3230,20 @@ tree_int_cst_lt (t1, t2) if (t1 == t2) return 0; - if (! TREE_UNSIGNED (TREE_TYPE (t1))) + if (TREE_UNSIGNED (TREE_TYPE (t1)) != TREE_UNSIGNED (TREE_TYPE (t2))) + { + int t1_sgn = tree_int_cst_sgn (t1); + int t2_sgn = tree_int_cst_sgn (t2); + + if (t1_sgn < t2_sgn) + return 1; + else if (t1_sgn > t2_sgn) + return 0; + /* Otherwise, both are non-negative, so we compare them as + unsigned just in case one of them would overflow a signed + type. */ + } + else if (! TREE_UNSIGNED (TREE_TYPE (t1))) return INT_CST_LT (t1, t2); return INT_CST_LT_UNSIGNED (t1, t2); |