gh-115859: Disable the tier 2 redundancy eliminator by default #115860
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gvanrossum
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Feb 23, 2024
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LG, but let's revert to always running it after we've fixed the bug in gh-115859.
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I'm heading to sleep. I will enable auto merge. Please feel free to push to the PR if neccessary. |
gvanrossum
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Feb 28, 2024
This undoes the *temporary* default disabling of the T2 optimizer pass in gh-115860. - Add a new test that reproduces Brandt's example from gh-115859; it indeed crashes before gh-116028 with PYTHONUOPSOPTIMIZE=1 - Re-enable the optimizer pass in T2, stop checking PYTHONUOPSOPTIMIZE - Rename the env var to disable T2 entirely to PYTHON_UOPS_OPTIMIZE (must be explicitly set to 0 to disable) - Fix skipIf conditions on tests in test_opt.py accordingly - Export sym_is_bottom() (for debugging) - Fix various things in the `_BINARY_OP_` specializations in the abstract interpreter: - DECREF(temp) - out-of-space check after sym_new_const() - add sym_matches_type() checks, so even if we somehow reach a binary op with symbolic constants of the wrong type on the stack we won't trigger the type assert
woodruffw
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Mar 4, 2024
woodruffw
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Mar 4, 2024
This undoes the *temporary* default disabling of the T2 optimizer pass in pythongh-115860. - Add a new test that reproduces Brandt's example from pythongh-115859; it indeed crashes before pythongh-116028 with PYTHONUOPSOPTIMIZE=1 - Re-enable the optimizer pass in T2, stop checking PYTHONUOPSOPTIMIZE - Rename the env var to disable T2 entirely to PYTHON_UOPS_OPTIMIZE (must be explicitly set to 0 to disable) - Fix skipIf conditions on tests in test_opt.py accordingly - Export sym_is_bottom() (for debugging) - Fix various things in the `_BINARY_OP_` specializations in the abstract interpreter: - DECREF(temp) - out-of-space check after sym_new_const() - add sym_matches_type() checks, so even if we somehow reach a binary op with symbolic constants of the wrong type on the stack we won't trigger the type assert
adorilson
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Mar 25, 2024
This undoes the *temporary* default disabling of the T2 optimizer pass in pythongh-115860. - Add a new test that reproduces Brandt's example from pythongh-115859; it indeed crashes before pythongh-116028 with PYTHONUOPSOPTIMIZE=1 - Re-enable the optimizer pass in T2, stop checking PYTHONUOPSOPTIMIZE - Rename the env var to disable T2 entirely to PYTHON_UOPS_OPTIMIZE (must be explicitly set to 0 to disable) - Fix skipIf conditions on tests in test_opt.py accordingly - Export sym_is_bottom() (for debugging) - Fix various things in the `_BINARY_OP_` specializations in the abstract interpreter: - DECREF(temp) - out-of-space check after sym_new_const() - add sym_matches_type() checks, so even if we somehow reach a binary op with symbolic constants of the wrong type on the stack we won't trigger the type assert
diegorusso
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Apr 17, 2024
diegorusso
pushed a commit
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Apr 17, 2024
This undoes the *temporary* default disabling of the T2 optimizer pass in pythongh-115860. - Add a new test that reproduces Brandt's example from pythongh-115859; it indeed crashes before pythongh-116028 with PYTHONUOPSOPTIMIZE=1 - Re-enable the optimizer pass in T2, stop checking PYTHONUOPSOPTIMIZE - Rename the env var to disable T2 entirely to PYTHON_UOPS_OPTIMIZE (must be explicitly set to 0 to disable) - Fix skipIf conditions on tests in test_opt.py accordingly - Export sym_is_bottom() (for debugging) - Fix various things in the `_BINARY_OP_` specializations in the abstract interpreter: - DECREF(temp) - out-of-space check after sym_new_const() - add sym_matches_type() checks, so even if we somehow reach a binary op with symbolic constants of the wrong type on the stack we won't trigger the type assert
LukasWoodtli
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Jan 22, 2025
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Fixes #115859.