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6716441: error in meet with +DoEscapeAnalysis

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Set instance_id to InstanceBot for InstPtr->meet(AryPtr) when types are not related.

Reviewed-by: jrose, never
This commit is contained in:
Vladimir Kozlov 2008-06-26 13:34:00 -07:00
parent 873da1efe8
commit 4213e62fb7
11 changed files with 1088 additions and 139 deletions
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6
hotspot/src/share/vm/opto/compile.cpp
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@ -1069,7 +1069,7 @@ const TypePtr *Compile::flatten_alias_type( const TypePtr *tj ) const {
// No constant oop pointers (such as Strings); they alias with
// unknown strings.
tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset);
} else if( to->is_instance_field() ) {
} else if( to->is_known_instance_field() ) {
tj = to; // Keep NotNull and klass_is_exact for instance type
} else if( ptr == TypePtr::NotNull || to->klass_is_exact() ) {
// During the 2nd round of IterGVN, NotNull castings are removed.
@ -1190,8 +1190,8 @@ void Compile::AliasType::Init(int i, const TypePtr* at) {
_field = NULL;
_is_rewritable = true; // default
const TypeOopPtr *atoop = (at != NULL) ? at->isa_oopptr() : NULL;
if (atoop != NULL && atoop->is_instance()) {
const TypeOopPtr *gt = atoop->cast_to_instance(TypeOopPtr::UNKNOWN_INSTANCE);
if (atoop != NULL && atoop->is_known_instance()) {
const TypeOopPtr *gt = atoop->cast_to_instance_id(TypeOopPtr::InstanceBot);
_general_index = Compile::current()->get_alias_index(gt);
} else {
_general_index = 0;