delta/cpython-git.git/Python/peephole.c, branch revert-10341-patch-7 github.com: python/cpython.git bpo-9566: Fix compiler warnings in peephole.c (GH-10652) 2018-12-07T16:54:18+00:00 Victor Stinner vstinner@redhat.com 2018-12-07T16:54:18+00:00 028f0ef4f3111d2b3fc5b971642e337ba7990873 






bpo-35193: Fix an off by one error in the RETURN_VALUE case. (GH-10418)
2018-11-09T01:55:07+00:00

Gregory P. Smith
greg@krypto.org

2018-11-09T01:55:07+00:00

49fa4a9f1ef387e16596f271414c855339eadf09

Fix an off by one error in the peephole optimizer when checking for unreachable code beyond a return.

Do a bounds check within find_op so it can return before going past the end as a safety measure.

https://github.com/python/cpython/commit/7db3c488335168993689ddae5914a28e16188447#diff-a33329ae6ae0bb295d742f0caf93c137
introduced this off by one error while fixing another one nearby.

This bug was shipped in all Python 3.6 and 3.7 releases.

The included unittest won't fail unless you do a clang msan build.




Fix an off by one error in the peephole optimizer when checking for unreachable code beyond a return.

Do a bounds check within find_op so it can return before going past the end as a safety measure.

https://github.com/python/cpython/commit/7db3c488335168993689ddae5914a28e16188447#diff-a33329ae6ae0bb295d742f0caf93c137
introduced this off by one error while fixing another one nearby.

This bug was shipped in all Python 3.6 and 3.7 releases.

The included unittest won't fail unless you do a clang msan build.






bpo-17611. Move unwinding of stack for "pseudo exceptions" from interpreter to compiler. (GH-5006)
2018-02-22T21:33:30+00:00

Serhiy Storchaka
storchaka@gmail.com

2018-02-22T21:33:30+00:00

520b7ae27e39d1c77ea74ccd1b184d7cb43f9dcb



Co-authored-by: Mark Shannon <mark@hotpy.org>
Co-authored-by: Antoine Pitrou <antoine@python.org>







Co-authored-by: Mark Shannon <mark@hotpy.org>
Co-authored-by: Antoine Pitrou <antoine@python.org>







bpo-29469: peephole: Remove const_stack (GH-4879)
2017-12-18T06:52:54+00:00

INADA Naoki
methane@users.noreply.github.com

2017-12-18T06:52:54+00:00

87010e85cb37192d63b1a30e5fabba307ad5a3f5

Constant folding was moved to AST optimizer.
But compiler may emit LOAD_CONSTs + BUILD_TUPLE.
For example, default arguments can be constant tuple
if all arguments are constant.

This commit makes peephole's tuple folding simple.
It doesn't support nested tuples because nested
tuples are folded by AST optimizer already.




Constant folding was moved to AST optimizer.
But compiler may emit LOAD_CONSTs + BUILD_TUPLE.
For example, default arguments can be constant tuple
if all arguments are constant.

This commit makes peephole's tuple folding simple.
It doesn't support nested tuples because nested
tuples are folded by AST optimizer already.






bpo-29469: Optimize literal lists and sets iterating on the AST level. (#4866)
2017-12-14T18:24:31+00:00

Serhiy Storchaka
storchaka@gmail.com

2017-12-14T18:24:31+00:00

15a8728415e765f57e37f431f09e5c5821a04063












bpo-29469: Remove unnecessary peephole optimizer (GH-4863)
2017-12-14T13:18:26+00:00

INADA Naoki
methane@users.noreply.github.com

2017-12-14T13:18:26+00:00

eadad1b97f64619bfd246b9d3b60d25f456e0592

Conversions like `not a is b -> a is not b` are implemented
in AST optimizer in previous commit (7ea143a).
So this commit removes them from peephole optimizer.




Conversions like `not a is b -> a is not b` are implemented
in AST optimizer in previous commit (7ea143a).
So this commit removes them from peephole optimizer.






bpo-29469: Move constant folding to AST optimizer (GH-2858)
2017-12-14T07:47:20+00:00

INADA Naoki
methane@users.noreply.github.com

2017-12-14T07:47:20+00:00

7ea143ae795a9fd57eaccf490d316bdc13ee9065












bpo-30501: Make the compiler producing optimized code for condition expressions. (#1851)
2017-06-11T11:50:22+00:00

Serhiy Storchaka
storchaka@gmail.com

2017-06-11T11:50:22+00:00

36ff451ebae41f09560bff582c95946474d898f8












Issue #28517: Fixed of-by-one error in the peephole optimizer that caused
2016-10-25T06:30:43+00:00

Serhiy Storchaka
storchaka@gmail.com

2016-10-25T06:30:43+00:00

7db3c488335168993689ddae5914a28e16188447

keeping unreachable code.





keeping unreachable code.







Fixed refactoring bug in dd046963bd42 (issue27129).
2016-09-11T12:19:12+00:00

Serhiy Storchaka
storchaka@gmail.com

2016-09-11T12:19:12+00:00

a1e9ab34a9cfe335af1b34287cdda6743c53487d