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5 Commits

Author SHA1 Message Date
Roman Lebedev f3c2094d8c
[clang] `aligned_alloc` allocation function specifies alignment in first arg, manifest that knowledge 
Mainly, if a constant value was passed as an alignment,
then we correctly annotate the alignment of the returned value
of @aligned_alloc. And if it wasn't constant,
then we also don't loose that, but emit an assumption.
 2021-09-10 20:49:29 +03:00
Roman Lebedev 50d7ecc560
[NFC][clang] Improve test coverage for alignment manifestation on aligned allocation functions 2021-09-10 20:49:28 +03:00
Dávid Bolvanský 2cae7025c1 Reland "[Clang] Propagate guaranteed alignment for malloc and others" 
This relands commit 6914a0ed2b. Crash in InstCombine was fixed.
 2021-04-23 14:05:57 +02:00
Dávid Bolvanský 6914a0ed2b Revert "[Clang] Propagate guaranteed alignment for malloc and others" 
This reverts commit c2297544c0. Some buildbots are broken.
 2021-04-23 11:33:33 +02:00
Dávid Bolvanský c2297544c0 [Clang] Propagate guaranteed alignment for malloc and others 
LLVM should be smarter about *known* malloc's alignment and this knowledge may enable other optimizations.

Originally started as LLVM patch - https://reviews.llvm.org/D100862 but this logic should be really in Clang.

Reviewed By: rjmccall

Differential Revision: https://reviews.llvm.org/D100879
 2021-04-23 11:07:14 +02:00