diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr31710.c | 6 | ||||
| -rw-r--r-- | gcc/tree.c | 9 |
4 files changed, 26 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b50c1aa..9e1510b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2007-04-27 Ian Lance Taylor <iant@google.com> + + PR middle-end/31710 + * tree.c (build_distinct_type_copy): If TYPE_MIN_VALUE or + TYPE_MAX_VALUE exist, convert them to the new type. + 2007-04-27 Zdenek Dvorak <dvorakz@suse.cz> * tree-cfgcleanup.c (cleanup_tree_cfg): Verify dominance info diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 49ed2ba..2272600 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2007-04-27 Ian Lance Taylor <iant@google.com> + + PR middle-end/31710 + * gcc.c-torture/compile/pr31710.c: New test. + 2007-04-27 Richard Guenther <rguenther@suse.de> PR tree-optimization/30965 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr31710.c b/gcc/testsuite/gcc.c-torture/compile/pr31710.c new file mode 100644 index 0000000..0c8562d --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr31710.c @@ -0,0 +1,6 @@ +typedef short SHORT; +struct v { SHORT i; }; +void f(struct v *pin, struct v *pout) { + if (pin->i == (-0x7fff)-1) + pout->i = -pin->i; +} @@ -4174,6 +4174,15 @@ build_distinct_type_copy (tree type) TYPE_MAIN_VARIANT (t) = t; TYPE_NEXT_VARIANT (t) = 0; + /* VRP assumes that TREE_TYPE (TYPE_MIN_VALUE (type)) == type. */ + if (INTEGRAL_TYPE_P (t) || SCALAR_FLOAT_TYPE_P (t)) + { + if (TYPE_MIN_VALUE (t) != NULL_TREE) + TYPE_MIN_VALUE (t) = fold_convert (t, TYPE_MIN_VALUE (t)); + if (TYPE_MAX_VALUE (t) != NULL_TREE) + TYPE_MAX_VALUE (t) = fold_convert (t, TYPE_MAX_VALUE (t)); + } + return t; } |