pythongh-115999: Record success in specialize (python#127167)

mpage · ebonnal · commit ddc0e1a6ad09 · 2025-01-10T23:56:32.000+01:00
Record success in `specialize`

This matches the existing behavior where we increment the success
stat for the generic opcode each time we successfully specialize
an instruction.
diff --git a/Python/specialize.c b/Python/specialize.c
@@ -715,6 +715,7 @@ specialize(_Py_CODEUNIT *instr, uint8_t specialized_opcode)
                             SPEC_FAIL_OTHER);
         return;
     }
+    STAT_INC(_PyOpcode_Deopt[specialized_opcode], success);
     set_counter((_Py_BackoffCounter *)instr + 1, adaptive_counter_cooldown());
 }
 

Original file line number	Diff line number	Diff line change
`@@ -715,6 +715,7 @@ specialize(_Py_CODEUNIT *instr, uint8_t specialized_opcode)`
`715`	`715`	`SPEC_FAIL_OTHER);`
`716`	`716`	`return;`
`717`	`717`	`}`
	`718`	`+ STAT_INC(_PyOpcode_Deopt[specialized_opcode], success);`
`718`	`719`	`set_counter((_Py_BackoffCounter *)instr + 1, adaptive_counter_cooldown());`
`719`	`720`	`}`
`720`	`721`