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6813212: factor duplicated assembly code for general subclass check (for 6655638)

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Code in interp_masm, stubGenerator, c1_LIRAssembler, and AD files moved into MacroAssembler.

Reviewed-by: kvn
This commit is contained in:
John R Rose 2009-03-13 18:39:22 -07:00
parent de67e52949
commit b8dbe8d8f6
17 changed files with 734 additions and 617 deletions
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40
hotspot/src/cpu/sparc/vm/assembler_sparc.hpp
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@ -2327,6 +2327,46 @@ class MacroAssembler: public Assembler {
Register temp_reg, Register temp2_reg,
Label& no_such_interface);
// Test sub_klass against super_klass, with fast and slow paths.
// The fast path produces a tri-state answer: yes / no / maybe-slow.
// One of the three labels can be NULL, meaning take the fall-through.
// If super_check_offset is -1, the value is loaded up from super_klass.
// No registers are killed, except temp_reg and temp2_reg.
// If super_check_offset is not -1, temp2_reg is not used and can be noreg.
void check_klass_subtype_fast_path(Register sub_klass,
Register super_klass,
Register temp_reg,
Register temp2_reg,
Label* L_success,
Label* L_failure,
Label* L_slow_path,
RegisterConstant super_check_offset = RegisterConstant(-1),
Register instanceof_hack = noreg);
// The rest of the type check; must be wired to a corresponding fast path.
// It does not repeat the fast path logic, so don't use it standalone.
// The temp_reg can be noreg, if no temps are available.
// It can also be sub_klass or super_klass, meaning it's OK to kill that one.
// Updates the sub's secondary super cache as necessary.
void check_klass_subtype_slow_path(Register sub_klass,
Register super_klass,
Register temp_reg,
Register temp2_reg,
Register temp3_reg,
Register temp4_reg,
Label* L_success,
Label* L_failure);
// Simplified, combined version, good for typical uses.
// Falls through on failure.
void check_klass_subtype(Register sub_klass,
Register super_klass,
Register temp_reg,
Register temp2_reg,
Label& L_success);
// Stack overflow checking
// Note: this clobbers G3_scratch