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-rw-r--r--gcc/tree-ssa-sccvn.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index 832328d328a..2391632364d 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -2194,6 +2194,9 @@ vn_nary_length_from_stmt (gimple stmt)
case VIEW_CONVERT_EXPR:
return 1;
+ case BIT_FIELD_REF:
+ return 3;
+
case CONSTRUCTOR:
return CONSTRUCTOR_NELTS (gimple_assign_rhs1 (stmt));
@@ -2220,6 +2223,13 @@ init_vn_nary_op_from_stmt (vn_nary_op_t vno, gimple stmt)
vno->op[0] = TREE_OPERAND (gimple_assign_rhs1 (stmt), 0);
break;
+ case BIT_FIELD_REF:
+ vno->length = 3;
+ vno->op[0] = TREE_OPERAND (gimple_assign_rhs1 (stmt), 0);
+ vno->op[1] = TREE_OPERAND (gimple_assign_rhs1 (stmt), 1);
+ vno->op[2] = TREE_OPERAND (gimple_assign_rhs1 (stmt), 2);
+ break;
+
case CONSTRUCTOR:
vno->length = CONSTRUCTOR_NELTS (gimple_assign_rhs1 (stmt));
for (i = 0; i < vno->length; ++i)
@@ -2227,6 +2237,7 @@ init_vn_nary_op_from_stmt (vn_nary_op_t vno, gimple stmt)
break;
default:
+ gcc_checking_assert (!gimple_assign_single_p (stmt));
vno->length = gimple_num_ops (stmt) - 1;
for (i = 0; i < vno->length; ++i)
vno->op[i] = gimple_op (stmt, i + 1);