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8013942: JSR 292: assert(type() == T_OBJECT) failed: type check

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A dead scope  of the local needs to be identified

Reviewed-by: coleenp, vlivanov, mgronlun
This commit is contained in:
Serguei Spitsyn 2014-07-10 17:46:35 -07:00 • committed by Serguei Spitsyn
parent 4c156aa18c
commit 36d6bfea4e
3 changed files with 10 additions and 13 deletions
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11
hotspot/src/share/vm/interpreter/oopMapCache.hpp
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@ -66,19 +66,15 @@ class InterpreterOopMap: ResourceObj {
public:
enum {
N = 2, // the number of words reserved
N = 4, // the number of words reserved
// for inlined mask storage
small_mask_limit = N * BitsPerWord, // the maximum number of bits
// available for small masks,
// small_mask_limit can be set to 0
// for testing bit_mask allocation
#ifdef ENABLE_ZAP_DEAD_LOCALS
bits_per_entry = 2,
dead_bit_number = 1,
#else
bits_per_entry = 1,
#endif
oop_bit_number = 0
};
@ -119,10 +115,6 @@ class InterpreterOopMap: ResourceObj {
void set_expression_stack_size(int sz) { _expression_stack_size = sz; }
#ifdef ENABLE_ZAP_DEAD_LOCALS
bool is_dead(int offset) const { return (entry_at(offset) & (1 << dead_bit_number)) != 0; }
#endif
// Lookup
bool match(methodHandle method, int bci) const { return _method == method() && _bci == bci; }
bool is_empty() const;
@ -144,6 +136,7 @@ class InterpreterOopMap: ResourceObj {
void print() const;
int number_of_entries() const { return mask_size() / bits_per_entry; }
bool is_dead(int offset) const { return (entry_at(offset) & (1 << dead_bit_number)) != 0; }
bool is_oop (int offset) const { return (entry_at(offset) & (1 << oop_bit_number )) != 0; }
int expression_stack_size() const { return _expression_stack_size; }