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* [CodeGen][ObjC] Annotate calls to objc_retainAutoreleasedReturnValueAkira Hatanaka2019-03-211-2/+2
| | | | | | | | | | | | | with notail on x86-64. On x86-64, the epilogue code inserted before the tail jump blocks the autoreleased return optimization. rdar://problem/38675807 Differential Revision: https://reviews.llvm.org/D59656 llvm-svn: 356705
* Generate objc intrinsics instead of runtime calls as the ARC optimizer now ↵Pete Cooper2018-12-181-4/+4
| | | | | | | | | works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
* [CodeGen] Avoid destructing a callee-destructued struct type in aAkira Hatanaka2018-04-271-0/+20
| | | | | | | | | | | | | | | | | | | | | | | function if a function delegates to another function. Fix a bug introduced in r328731, which caused a struct with ObjC __weak fields that was passed to a function to be destructed twice, once in the callee function and once in another function the callee function delegates to. To prevent this, keep track of the callee-destructed structs passed to a function and disable their cleanups at the point of the call to the delegated function. This reapplies r331016, which was reverted in r331019 because it caused an assertion to fail in EmitDelegateCallArg on a windows bot. I made changes to EmitDelegateCallArg so that it doesn't try to deactivate cleanups for structs that have trivial destructors (cleanups for those structs are never pushed to the cleanup stack in EmitParmDecl). rdar://problem/39194693 Differential Revision: https://reviews.llvm.org/D45382 llvm-svn: 331020
* Revert "[CodeGen] Avoid destructing a callee-destructued struct type in a"Akira Hatanaka2018-04-271-20/+0
| | | | | | | | This reverts commit r331016, which broke a windows bot. http://lab.llvm.org:8011/builders/clang-x86-windows-msvc2015/builds/11727 llvm-svn: 331019
* [CodeGen] Avoid destructing a callee-destructued struct type in aAkira Hatanaka2018-04-271-0/+20
| | | | | | | | | | | | | | | | | function if a function delegates to another function. Fix a bug introduced in r328731, which caused a struct with ObjC __weak fields that was passed to a function to be destructed twice, once in the callee function and once in another function the callee function delegates to. To prevent this, keep track of the callee-destructed structs passed to a function and disable their cleanups at the point of the call to the delegated function. rdar://problem/39194693 Differential Revision: https://reviews.llvm.org/D45382 llvm-svn: 331016
* In an ARC lambda-to-block conversion thunk, reclaim the return value ofJohn McCall2017-12-141-0/+23
the lambda so that we don't over-release it. Patch by Dan Zimmerman! llvm-svn: 320721
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