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comparison src/share/vm/oops/methodData.hpp @ 8616:d343737786fe

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changed profiling of exceptions so that the ExceptionSeen flag also works without GRAALVM
author Christian Haeubl <haeubl@ssw.jku.at>
date Thu, 28 Mar 2013 17:11:06 +0100
parents 6c4db417385a
children 89e4d67fdd2a
comparison
equal deleted inserted replaced
8615:91c79e13b9cf 8616:d343737786fe
459 class BitData : public ProfileData { 459 class BitData : public ProfileData {
460 protected: 460 protected:
461 enum { 461 enum {
462 // null_seen: 462 // null_seen:
463 // saw a null operand (cast/aastore/instanceof) 463 // saw a null operand (cast/aastore/instanceof)
464 null_seen_flag = DataLayout::first_flag + 0 464 null_seen_flag = DataLayout::first_flag + 0
465 #ifdef GRAAL
466 // bytecode threw any exception
467 , exception_seen_flag = null_seen_flag + 1
468 #endif
465 }; 469 };
466 enum { bit_cell_count = 0 }; // no additional data fields needed. 470 enum { bit_cell_count = 0 }; // no additional data fields needed.
467 public: 471 public:
468 BitData(DataLayout* layout) : ProfileData(layout) { 472 BitData(DataLayout* layout) : ProfileData(layout) {
469 } 473 }
482 486
483 // The null_seen flag bit is specially known to the interpreter. 487 // The null_seen flag bit is specially known to the interpreter.
484 // Consulting it allows the compiler to avoid setting up null_check traps. 488 // Consulting it allows the compiler to avoid setting up null_check traps.
485 bool null_seen() { return flag_at(null_seen_flag); } 489 bool null_seen() { return flag_at(null_seen_flag); }
486 void set_null_seen() { set_flag_at(null_seen_flag); } 490 void set_null_seen() { set_flag_at(null_seen_flag); }
487 491 #ifdef GRAAL
492 // true if an exception was thrown at the specific BCI
493 bool exception_seen() { return flag_at(exception_seen_flag); }
494 void set_exception_seen() { set_flag_at(exception_seen_flag); }
495 #endif
488 496
489 // Code generation support 497 // Code generation support
490 static int null_seen_byte_constant() { 498 static int null_seen_byte_constant() {
491 return flag_number_to_byte_constant(null_seen_flag); 499 return flag_number_to_byte_constant(null_seen_flag);
492 } 500 }