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bpo-40222: "Zero cost" exception handling (GH-25729)

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"Zero cost" exception handling.

* Uses a lookup table to determine how to handle exceptions.
* Removes SETUP_FINALLY and POP_TOP block instructions, eliminating (most of) the runtime overhead of try statements.
* Reduces the size of the frame object by about 60%.
This commit is contained in:
Mark Shannon 2021-05-07 15:19:19 +01:00 • committed by GitHub
parent b32c8e9795
commit adcd220556
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30 changed files with 6614 additions and 5687 deletions
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2
Python/frozen_hello.h
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@ -8,5 +8,5 @@ const unsigned char _Py_M__hello[] = {
5,112,114,105,110,116,169,0,114,1,0,0,0,114,1,0,
0,0,122,14,60,102,114,111,122,101,110,32,104,101,108,108,
111,62,218,8,60,109,111,100,117,108,101,62,1,0,0,0,
115,4,0,0,0,4,0,12,1,
115,4,0,0,0,4,0,12,1,243,0,0,0,0,
};