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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-10-16 12:32:01 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-10-16 12:32:01 +0000 |
| commit | c2ffc126d31447d231dce2872700bbb415ec3af9 (patch) | |
| tree | 58f980d63d671515b7f80da62568737229e3d50e | |
| parent | f67192ed80f8f3040c6b0ff957f17d5024f837c5 (diff) | |
| download | ppe42-gcc-c2ffc126d31447d231dce2872700bbb415ec3af9.tar.gz ppe42-gcc-c2ffc126d31447d231dce2872700bbb415ec3af9.zip | |
PR tree-optimization/37664
* fold-const.c (fold_binary): When optimizing comparison with
highest or lowest type's value, don't consider TREE_OVERFLOW.
* gcc.c-torture/compile/pr37664.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@141171 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/fold-const.c | 1 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr37664.c | 14 |
4 files changed, 25 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 13d987a712c..b242191716b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-10-16 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/37664 + * fold-const.c (fold_binary): When optimizing comparison with + highest or lowest type's value, don't consider TREE_OVERFLOW. + 2008-10-16 David Edelsohn <edelsohn@gnu.org> PR target/35483 diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 0ce122a1554..605caa812e0 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -12447,7 +12447,6 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) unsigned int width = TYPE_PRECISION (arg1_type); if (TREE_CODE (arg1) == INTEGER_CST - && !TREE_OVERFLOW (arg1) && width <= 2 * HOST_BITS_PER_WIDE_INT && (INTEGRAL_TYPE_P (arg1_type) || POINTER_TYPE_P (arg1_type))) { diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index dd4544b6155..9148684b63c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-10-16 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/37664 + * gcc.c-torture/compile/pr37664.c: New test. + 2008-10-16 Joseph Myers <joseph@codesourcery.com> PR middle-end/37418 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr37664.c b/gcc/testsuite/gcc.c-torture/compile/pr37664.c new file mode 100644 index 00000000000..cf5c83d7b2d --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr37664.c @@ -0,0 +1,14 @@ +/* PR tree-optimization/37664 */ + +int v; + +int +foo () +{ + int a = 0x8899A862; + int b = 0x8E * a; + int c = (b % b); + if (v > (4294967295U >> c)) + return v; + return 0; +} |
