diff options
Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index ae120a8..5d5386e 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -231,13 +231,12 @@ debug_lattice_value (ccp_prop_value_t val) fprintf (stderr, "\n"); } -/* Extend NONZERO_BITS to a full mask, with the upper bits being set. */ +/* Extend NONZERO_BITS to a full mask, based on sgn. */ static widest_int -extend_mask (const wide_int &nonzero_bits) +extend_mask (const wide_int &nonzero_bits, signop sgn) { - return (wi::mask <widest_int> (wi::get_precision (nonzero_bits), true) - | widest_int::from (nonzero_bits, UNSIGNED)); + return widest_int::from (nonzero_bits, sgn); } /* Compute a default value for variable VAR and store it in the @@ -287,7 +286,7 @@ get_default_value (tree var) { val.lattice_val = CONSTANT; val.value = build_zero_cst (TREE_TYPE (var)); - val.mask = extend_mask (nonzero_bits); + val.mask = extend_mask (nonzero_bits, TYPE_SIGN (TREE_TYPE (var))); } } } @@ -1937,7 +1936,7 @@ evaluate_stmt (gimple *stmt) { val.lattice_val = CONSTANT; val.value = build_zero_cst (TREE_TYPE (lhs)); - val.mask = extend_mask (nonzero_bits); + val.mask = extend_mask (nonzero_bits, TYPE_SIGN (TREE_TYPE (lhs))); is_constant = true; } else @@ -1948,7 +1947,8 @@ evaluate_stmt (gimple *stmt) if (nonzero_bits == 0) val.mask = 0; else - val.mask = val.mask & extend_mask (nonzero_bits); + val.mask = val.mask & extend_mask (nonzero_bits, + TYPE_SIGN (TREE_TYPE (lhs))); } } } |