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bpo-45340: Don't create object dictionaries unless actually needed (GH-28802)

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* Never change types' cached keys. It could invalidate inline attribute objects.

* Lazily create object dictionaries.

* Update specialization of LOAD/STORE_ATTR.

* Don't update shared keys version for deletion of value.

* Update gdb support to handle instance values.

* Rename SPLIT_KEYS opcodes to INSTANCE_VALUE.
This commit is contained in:
Mark Shannon 2021-10-13 14:19:34 +01:00 • committed by GitHub
parent 97308dfcdc
commit a8b9350964
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18 changed files with 721 additions and 400 deletions
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21
Include/opcode.h generated
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@ -147,7 +147,7 @@ extern "C" {
#define BINARY_SUBSCR_DICT 39
#define JUMP_ABSOLUTE_QUICK 40
#define LOAD_ATTR_ADAPTIVE 41
#define LOAD_ATTR_SPLIT_KEYS 42
#define LOAD_ATTR_INSTANCE_VALUE 42
#define LOAD_ATTR_WITH_HINT 43
#define LOAD_ATTR_SLOT 44
#define LOAD_ATTR_MODULE 45
@ -158,15 +158,16 @@ extern "C" {
#define LOAD_METHOD_CACHED 80
#define LOAD_METHOD_CLASS 81
#define LOAD_METHOD_MODULE 87
#define STORE_ATTR_ADAPTIVE 88
#define STORE_ATTR_SPLIT_KEYS 120
#define STORE_ATTR_SLOT 122
#define STORE_ATTR_WITH_HINT 123
#define LOAD_FAST__LOAD_FAST 127
#define STORE_FAST__LOAD_FAST 128
#define LOAD_FAST__LOAD_CONST 134
#define LOAD_CONST__LOAD_FAST 140
#define STORE_FAST__STORE_FAST 143
#define LOAD_METHOD_NO_DICT 88
#define STORE_ATTR_ADAPTIVE 120
#define STORE_ATTR_INSTANCE_VALUE 122
#define STORE_ATTR_SLOT 123
#define STORE_ATTR_WITH_HINT 127
#define LOAD_FAST__LOAD_FAST 128
#define STORE_FAST__LOAD_FAST 134
#define LOAD_FAST__LOAD_CONST 140
#define LOAD_CONST__LOAD_FAST 143
#define STORE_FAST__STORE_FAST 149
#define DO_TRACING 255
#ifdef NEED_OPCODE_JUMP_TABLES
static uint32_t _PyOpcode_RelativeJump[8] = {