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Author SHA1 Message Date
Daniel Kiss 22b615a965 [libunwind] Support for leaf function unwinding. 
Unwinding leaf function is useful in cases when the backtrace finds a
leaf function for example when it caused a signal.
This patch also add the support for the DW_CFA_undefined because it marks
the end of the frames.

Ryan Prichard provided code for the tests.

Reviewed By: #libunwind, mstorsjo

Differential Revision: https://reviews.llvm.org/D83573

Reland with limit the test to the x86_64-linux target.
 2020-09-18 15:09:42 +02:00
Daniel Kiss 5831adb8c3 Revert "[libunwind] Support for leaf function unwinding." 
This reverts commit 23bef7ee99.
 2020-09-18 11:37:54 +02:00
Daniel Kiss 23bef7ee99 [libunwind] Support for leaf function unwinding. 
Unwinding leaf function is useful in cases when the backtrace finds a
leaf function for example when it caused a signal.
This patch also add the support for the DW_CFA_undefined because it marks
the end of the frames.

Ryan Prichard provided code for the tests.

Reviewed By: #libunwind, mstorsjo

Differential Revision: https://reviews.llvm.org/D83573
 2020-09-16 23:53:36 +02:00