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| author | Alexandre Oliva <aoliva@redhat.com> | 2002-04-26 19:35:33 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2002-04-26 19:35:33 +0000 |
| commit | b13ab42c86156992f0ee15fcf70dfb8cd05fca88 (patch) | |
| tree | 1db5ca96a007933eeb8608cdeefdc679084e4829 /gcc | |
| parent | 5e56f90934bee3ddf51271c4246e0f3d331b203e (diff) | |
| download | gcc-b13ab42c86156992f0ee15fcf70dfb8cd05fca88.zip gcc-b13ab42c86156992f0ee15fcf70dfb8cd05fca88.tar.gz gcc-b13ab42c86156992f0ee15fcf70dfb8cd05fca88.tar.bz2 | |
tree.c (tree_int_cst_lt): Compare constants whose types differ in unsigned-ness correctly.
* tree.c (tree_int_cst_lt): Compare constants whose types differ
in unsigned-ness correctly.
From-SVN: r52802
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree.c | 15 |
2 files changed, 19 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c87842e..f23a4a4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-04-26 Alexandre Oliva <aoliva@redhat.com> + + * tree.c (tree_int_cst_lt): Compare constants whose types differ + in unsigned-ness correctly. + 2002-04-26 John David Anglin <dave@hiauly1.hia.nrc.ca> * pa.h (FUNCTION_OK_FOR_SIBCALL): Don't do sibcalls when using the @@ -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); |