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Revert "GH-128914: Remove conditional stack effects from bytecodes.c and the code generators (GH-128918)" (GH-129202)

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The commit introduced a ~2.5-3% regression in the free threading build.

This reverts commit ab61d3f430.
This commit is contained in:
Sam Gross 2025-01-23 04:26:25 -05:00 • committed by GitHub
parent d7d066c3ab
commit a10f99375e
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GPG key ID: B5690EEEBB952194
44 changed files with 1679 additions and 1460 deletions
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27
Python/codegen.c
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@ -348,6 +348,8 @@ codegen_addop_o(compiler *c, location loc,
RETURN_IF_ERROR_IN_SCOPE((C), ret); \
} while (0)
#define LOAD_METHOD -1
#define LOAD_SUPER_METHOD -2
#define LOAD_ZERO_SUPER_ATTR -3
#define LOAD_ZERO_SUPER_METHOD -4
@ -364,11 +366,20 @@ codegen_addop_name(compiler *c, location loc,
if (arg < 0) {
return ERROR;
}
if (opcode == LOAD_ATTR) {
arg <<= 1;
}
if (opcode == LOAD_METHOD) {
opcode = LOAD_ATTR;
arg <<= 1;
arg |= 1;
}
if (opcode == LOAD_SUPER_ATTR) {
arg <<= 2;
arg |= 2;
}
if (opcode == LOAD_SUPER_METHOD) {
opcode = LOAD_SUPER_ATTR;
arg <<= 2;
arg |= 3;
}
@ -377,7 +388,7 @@ codegen_addop_name(compiler *c, location loc,
arg <<= 2;
}
if (opcode == LOAD_ZERO_SUPER_METHOD) {
opcode = LOAD_SUPER_METHOD;
opcode = LOAD_SUPER_ATTR;
arg <<= 2;
arg |= 1;
}
@ -3154,6 +3165,9 @@ codegen_nameop(compiler *c, location loc,
assert(op);
Py_DECREF(mangled);
if (op == LOAD_GLOBAL) {
arg <<= 1;
}
ADDOP_I(c, loc, op, arg);
return SUCCESS;
@ -4094,10 +4108,7 @@ ex_call:
}
assert(have_dict);
}
if (nkwelts == 0) {
ADDOP(c, loc, PUSH_NULL);
}
ADDOP(c, loc, CALL_FUNCTION_EX);
ADDOP_I(c, loc, CALL_FUNCTION_EX, nkwelts > 0);
return SUCCESS;
}
@ -4830,10 +4841,8 @@ codegen_async_with(compiler *c, stmt_ty s, int pos)
SETUP_WITH E
<code to store to VAR> or POP_TOP
<code for BLOCK>
LOAD_CONST None
LOAD_CONST None
LOAD_CONST None
CALL 3
LOAD_CONST (None, None, None)
CALL_FUNCTION_EX 0
JUMP EXIT
E: WITH_EXCEPT_START (calls EXPR.__exit__)
POP_JUMP_IF_TRUE T: