diff options
| author | Daniel Berlin <dberlin@dberlin.org> | 2007-07-01 02:20:06 +0000 |
|---|---|---|
| committer | Daniel Berlin <dberlin@gcc.gnu.org> | 2007-07-01 02:20:06 +0000 |
| commit | b941a8ae18d35d1a87f432f8e4fbad71398aa6f8 (patch) | |
| tree | ad027c9a777ced30e1569288d9ec0af1065a1766 | |
| parent | c0333e3dca67c423658cfb3a42c7bc8388826670 (diff) | |
| download | gcc-b941a8ae18d35d1a87f432f8e4fbad71398aa6f8.zip gcc-b941a8ae18d35d1a87f432f8e4fbad71398aa6f8.tar.gz gcc-b941a8ae18d35d1a87f432f8e4fbad71398aa6f8.tar.bz2 | |
tree-ssa-pre.c (is_exception_related): New function
2007-06-30 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-pre.c (is_exception_related): New function
(can_value_number_operation): Use it.
From-SVN: r126162
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-pre.c | 12 |
2 files changed, 16 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c8f71ee..7e576be 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -25,6 +25,11 @@ * pa.c (hppa_can_use_return_insn_p): Delete function. Include "df.h". 2007-06-30 Daniel Berlin <dberlin@dberlin.org> + + * tree-ssa-pre.c (is_exception_related): New function + (can_value_number_operation): Use it. + +2007-06-30 Daniel Berlin <dberlin@dberlin.org> Fix PR tree-optimization/32540 Fix PR tree-optimization/31651 diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 966d881..b971de4 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -2122,13 +2122,23 @@ can_value_number_call (tree stmt) return false; } +/* Return true if OP is an exception handler related operation, such as + FILTER_EXPRor EXC_PTR_EXPR. */ + +static bool +is_exception_related (tree op) +{ + return TREE_CODE (op) == FILTER_EXPR || TREE_CODE (op) == EXC_PTR_EXPR; +} + /* Return true if OP is a tree which we can perform value numbering on. */ static bool can_value_number_operation (tree op) { - return UNARY_CLASS_P (op) + return (UNARY_CLASS_P (op) + && !is_exception_related (TREE_OPERAND (op, 0))) || BINARY_CLASS_P (op) || COMPARISON_CLASS_P (op) || REFERENCE_CLASS_P (op) |