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| author | Marc Glisse <marc.glisse@inria.fr> | 2016-04-26 16:02:09 +0200 |
|---|---|---|
| committer | Marc Glisse <glisse@gcc.gnu.org> | 2016-04-26 14:02:09 +0000 |
| commit | 6b6aa8d388ce3a330fb65db4e9d5120fbe3c1fe7 (patch) | |
| tree | c9d8cd56bc07eff23e7a6bbb4f64796773adab46 /gcc/fold-const.c | |
| parent | a84454dc451034e76d05f0b23ad2bffceb8cac05 (diff) | |
| download | gcc-6b6aa8d388ce3a330fb65db4e9d5120fbe3c1fe7.zip gcc-6b6aa8d388ce3a330fb65db4e9d5120fbe3c1fe7.tar.gz gcc-6b6aa8d388ce3a330fb65db4e9d5120fbe3c1fe7.tar.bz2 | |
match.pd: X + X --> X * 2 for integers
2016-04-26 Marc Glisse <marc.glisse@inria.fr>
gcc/
* genmatch.c (write_predicate): Add ATTRIBUTE_UNUSED.
* fold-const.c (fold_binary_loc): Remove 2 transformations
superseded by match.pd.
* match.pd (x+x -> x*2): Generalize to integers.
gcc/testsuite/
* gcc.dg/fold-plusmult.c: Adjust.
* gcc.dg/no-strict-overflow-6.c: Adjust.
* gcc.dg/gomp/loop-1.c: Xfail some tests.
From-SVN: r235444
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 9514c71..1ce66e7 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -9956,25 +9956,6 @@ fold_binary_loc (location_t loc, fold_convert_loc (loc, type, negate_expr (op0)), tem); - /* (A + A) * C -> A * 2 * C */ - if (TREE_CODE (arg0) == PLUS_EXPR - && TREE_CODE (arg1) == INTEGER_CST - && operand_equal_p (TREE_OPERAND (arg0, 0), - TREE_OPERAND (arg0, 1), 0)) - return fold_build2_loc (loc, MULT_EXPR, type, - omit_one_operand_loc (loc, type, - TREE_OPERAND (arg0, 0), - TREE_OPERAND (arg0, 1)), - fold_build2_loc (loc, MULT_EXPR, type, - build_int_cst (type, 2) , arg1)); - - /* ((T) (X /[ex] C)) * C cancels out if the conversion is - sign-changing only. */ - if (TREE_CODE (arg1) == INTEGER_CST - && TREE_CODE (arg0) == EXACT_DIV_EXPR - && operand_equal_p (arg1, TREE_OPERAND (arg0, 1), 0)) - return fold_convert_loc (loc, type, TREE_OPERAND (arg0, 0)); - strict_overflow_p = false; if (TREE_CODE (arg1) == INTEGER_CST && 0 != (tem = extract_muldiv (op0, arg1, code, NULL_TREE, |