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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-13 08:40:00 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-13 08:40:00 -0400 |
| commit | 8f03b1af617f1f9e1a2a37c31f89b8ce3d66e9e8 (patch) | |
| tree | 43b22d5aeb73fbdb43ced74575f1082a7403db9e /gcc | |
| parent | 4c7bdca61729c4ae0a2393564fe24689094abc40 (diff) | |
| download | gcc-8f03b1af617f1f9e1a2a37c31f89b8ce3d66e9e8.zip gcc-8f03b1af617f1f9e1a2a37c31f89b8ce3d66e9e8.tar.gz gcc-8f03b1af617f1f9e1a2a37c31f89b8ce3d66e9e8.tar.bz2 | |
Remove last change.
From-SVN: r7764
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/fold-const.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 15509a3..fc61190 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -3751,24 +3751,6 @@ fold (expr) && operand_equal_p (TREE_OPERAND (arg0, 1), arg1, 0)) return TREE_OPERAND (arg0, 0); - /* If we have ((A / C1) * C2) with C1 and C2 constant, - C2 >= C1, and the division an unsigned CEIL_DIV_EXPR, - we know that the addition that's part of the CEIL_DIV_EXPR - cannot overflow while the generic CEIL_DIV_EXPR does not. - So convert it into a TRUNC_DIV_EXPR of an add. */ - if (TREE_CODE (arg0) == CEIL_DIV_EXPR && TREE_UNSIGNED (type) - && TREE_CODE (arg1) == INTEGER_CST - && TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST - && ! tree_int_cst_lt (arg1, TREE_OPERAND (arg0, 1))) - return - build (MULT_EXPR, type, - build (TRUNC_DIV_EXPR, type, - build (PLUS_EXPR, type, - TREE_OPERAND (TREE_OPERAND (arg0, 0), 0)), - const_binop (MINUS_EXPR, TREE_OPERAND (arg0, 1), - integer_one_node, 0)), - arg1); - /* (a * (1 << b)) is (a << b) */ if (TREE_CODE (arg1) == LSHIFT_EXPR && integer_onep (TREE_OPERAND (arg1, 0))) |