1.1 --- a/src/share/vm/opto/compile.cpp Mon Oct 22 02:50:45 2018 -0400
1.2 +++ b/src/share/vm/opto/compile.cpp Mon Oct 22 05:26:38 2018 -0400
1.3 @@ -1680,16 +1680,23 @@
1.4 const TypePtr* flat = flatten_alias_type(adr_type);
1.5
1.6 #ifdef ASSERT
1.7 - assert(flat == flatten_alias_type(flat), "idempotent");
1.8 - assert(flat != TypePtr::BOTTOM, "cannot alias-analyze an untyped ptr");
1.9 - if (flat->isa_oopptr() && !flat->isa_klassptr()) {
1.10 - const TypeOopPtr* foop = flat->is_oopptr();
1.11 - // Scalarizable allocations have exact klass always.
1.12 - bool exact = !foop->klass_is_exact() || foop->is_known_instance();
1.13 - const TypePtr* xoop = foop->cast_to_exactness(exact)->is_ptr();
1.14 - assert(foop == flatten_alias_type(xoop), "exactness must not affect alias type");
1.15 + {
1.16 + ResourceMark rm;
1.17 + assert(flat == flatten_alias_type(flat),
1.18 + err_msg("not idempotent: adr_type = %s; flat = %s => %s", Type::str(adr_type),
1.19 + Type::str(flat), Type::str(flatten_alias_type(flat))));
1.20 + assert(flat != TypePtr::BOTTOM,
1.21 + err_msg("cannot alias-analyze an untyped ptr: adr_type = %s", Type::str(adr_type)));
1.22 + if (flat->isa_oopptr() && !flat->isa_klassptr()) {
1.23 + const TypeOopPtr* foop = flat->is_oopptr();
1.24 + // Scalarizable allocations have exact klass always.
1.25 + bool exact = !foop->klass_is_exact() || foop->is_known_instance();
1.26 + const TypePtr* xoop = foop->cast_to_exactness(exact)->is_ptr();
1.27 + assert(foop == flatten_alias_type(xoop),
1.28 + err_msg("exactness must not affect alias type: foop = %s; xoop = %s",
1.29 + Type::str(foop), Type::str(xoop)));
1.30 + }
1.31 }
1.32 - assert(flat == flatten_alias_type(flat), "exact bit doesn't matter");
1.33 #endif
1.34
1.35 int idx = AliasIdxTop;
