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| author | Richard Henderson <rth@redhat.com> | 2005-01-02 00:35:34 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2005-01-02 00:35:34 -0800 |
| commit | 155a821372f0f6533eb7e6f711bb221ce5bc136b (patch) | |
| tree | 7ac40de5ff75592ffe8a5c47e0137e8c80274d06 /gcc/tree-vectorizer.c | |
| parent | bedb9fc04bb56b56d8af671bdfe28cc9052622ec (diff) | |
| download | gcc-155a821372f0f6533eb7e6f711bb221ce5bc136b.zip gcc-155a821372f0f6533eb7e6f711bb221ce5bc136b.tar.gz gcc-155a821372f0f6533eb7e6f711bb221ce5bc136b.tar.bz2 | |
tree-vectorizer.c (vect_analyze_offset_expr): Strip conversions that don't narrow the value.
* tree-vectorizer.c (vect_analyze_offset_expr): Strip conversions
that don't narrow the value. Fail for other conversions.
From-SVN: r92804
Diffstat (limited to 'gcc/tree-vectorizer.c')
| -rw-r--r-- | gcc/tree-vectorizer.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c index 5df56df..bd826d0 100644 --- a/gcc/tree-vectorizer.c +++ b/gcc/tree-vectorizer.c @@ -1390,7 +1390,22 @@ vect_analyze_offset_expr (tree expr, enum tree_code code; tree init, evolution, def_stmt; - STRIP_NOPS (expr); + /* Strip conversions that don't narrow the mode. */ + while (TREE_CODE (expr) == NOP_EXPR || TREE_CODE (expr) == CONVERT_EXPR) + { + tree to, ti; + + to = TREE_TYPE (expr); + oprnd0 = TREE_OPERAND (expr, 0); + ti = TREE_TYPE (oprnd0); + + if (!INTEGRAL_TYPE_P (to) || !INTEGRAL_TYPE_P (ti)) + return false; + if (GET_MODE_SIZE (TYPE_MODE (to)) < GET_MODE_SIZE (TYPE_MODE (ti))) + return false; + + expr = oprnd0; + } *step = NULL_TREE; *misalign = NULL_TREE; |