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8136406: Remove ZapDeadCompiledLocals code

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Dead code elimination.

Reviewed-by: roland, twisti
This commit is contained in:
Vladimir Kozlov 2015-09-15 11:04:11 -07:00
parent 00a6ff7050
commit 44a4201adc
22 changed files with 64 additions and 590 deletions
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12
hotspot/src/share/vm/compiler/oopMap.hpp
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@ -33,7 +33,6 @@
// Interface for generating the frame map for compiled code. A frame map
// describes for a specific pc whether each register and frame stack slot is:
// Oop - A GC root for current frame
// Value - Live non-oop, non-float value: int, either half of double
// Dead - Dead; can be Zapped for debugging
// CalleeXX - Callee saved; also describes which caller register is saved
// DerivedXX - A derived oop; original oop is described.
@ -54,7 +53,7 @@ private:
public:
// Constants
enum { type_bits = 5,
enum { type_bits = 4,
register_bits = BitsPerShort - type_bits };
enum { type_shift = 0,
@ -68,10 +67,9 @@ public:
enum oop_types { // must fit in type_bits
unused_value =0, // powers of 2, for masking OopMapStream
oop_value = 1,
value_value = 2,
narrowoop_value = 4,
callee_saved_value = 8,
derived_oop_value= 16 };
narrowoop_value = 2,
callee_saved_value = 4,
derived_oop_value= 8 };
// Constructors
OopMapValue () { set_value(0); set_content_reg(VMRegImpl::Bad()); }
@ -96,13 +94,11 @@ public:
// Querying
bool is_oop() { return mask_bits(value(), type_mask_in_place) == oop_value; }
bool is_value() { return mask_bits(value(), type_mask_in_place) == value_value; }
bool is_narrowoop() { return mask_bits(value(), type_mask_in_place) == narrowoop_value; }
bool is_callee_saved() { return mask_bits(value(), type_mask_in_place) == callee_saved_value; }
bool is_derived_oop() { return mask_bits(value(), type_mask_in_place) == derived_oop_value; }
void set_oop() { set_value((value() & register_mask_in_place) | oop_value); }
void set_value() { set_value((value() & register_mask_in_place) | value_value); }
void set_narrowoop() { set_value((value() & register_mask_in_place) | narrowoop_value); }
void set_callee_saved() { set_value((value() & register_mask_in_place) | callee_saved_value); }
void set_derived_oop() { set_value((value() & register_mask_in_place) | derived_oop_value); }