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compiler: Avoid unnecessary interface conversions. 

From-SVN: r188545
This commit is contained in:
Ian Lance Taylor 2012-06-14 00:47:38 +00:00
parent f7a70512cb
commit c4675e5e5c
1 changed files with 4 additions and 2 deletions
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6
gcc/go/gofrontend/expressions.cc
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@ -168,7 +168,8 @@ Expression::convert_for_assignment(Translate_context* context, Type* lhs_type,
if (lhs_type_tree == error_mark_node)
return error_mark_node;
if (lhs_type != rhs_type && lhs_type->interface_type() != NULL)
if (lhs_type->forwarded() != rhs_type->forwarded()
&& lhs_type->interface_type() != NULL)
{
if (rhs_type->interface_type() == NULL)
return Expression::convert_type_to_interface(context, lhs_type,
@ -179,7 +180,8 @@ Expression::convert_for_assignment(Translate_context* context, Type* lhs_type,
rhs_type, rhs_tree,
false, location);
}
else if (lhs_type != rhs_type && rhs_type->interface_type() != NULL)
else if (lhs_type->forwarded() != rhs_type->forwarded()
&& rhs_type->interface_type() != NULL)
return Expression::convert_interface_to_type(context, lhs_type, rhs_type,
rhs_tree, location);
else if (lhs_type->is_slice_type() && rhs_type->is_nil_type())