diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-05 10:54:14 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-05 10:54:14 +0000 |
| commit | ce993cc21ae809ff5dc84558fa4c0ee7a4cc108d (patch) | |
| tree | 8f305cd98368d269f8bb3b30639fd03210cf77df /gcc/gimple-fold.c | |
| parent | b3988bd821b6c6b7e11039a5f71627bfd1b71972 (diff) | |
| download | gcc-ce993cc21ae809ff5dc84558fa4c0ee7a4cc108d.tar.gz | |
2011-10-05 Richard Guenther <rguenther@suse.de>
* gimple-fold.c (gimple_fold_stmt_to_constant_1): For
ternary ops with an embedded expression valueize and fold
that as well.
* tree-ssa-sccvn.c (try_to_simplify): Also allow SSA name
results from gimple_fold_stmt_to_constant_1.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@179543 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gimple-fold.c')
| -rw-r--r-- | gcc/gimple-fold.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index 179535ef566..fcfbcc8f5b3 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -2569,6 +2569,19 @@ gimple_fold_stmt_to_constant_1 (gimple stmt, tree (*valueize) (tree)) tree op1 = (*valueize) (gimple_assign_rhs2 (stmt)); tree op2 = (*valueize) (gimple_assign_rhs3 (stmt)); + /* Fold embedded expressions in ternary codes. */ + if ((subcode == COND_EXPR + || subcode == VEC_COND_EXPR) + && COMPARISON_CLASS_P (op0)) + { + tree op00 = (*valueize) (TREE_OPERAND (op0, 0)); + tree op01 = (*valueize) (TREE_OPERAND (op0, 1)); + tree tem = fold_binary_loc (loc, TREE_CODE (op0), + TREE_TYPE (op0), op00, op01); + if (tem) + op0 = tem; + } + return fold_ternary_loc (loc, subcode, gimple_expr_type (stmt), op0, op1, op2); } |