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Tag the 11.0.0 version bump.

export.sh: Fetch sources from GitHub instead of SVN

Reviewers: hansw, jdoerfert

Subscribers: sylvestre.ledru, mgorny, hans, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70460

(cherry picked from commit edf6717)

export.sh: Fetch sources from GitHub instead of SVN

Reviewers: hansw, jdoerfert

Subscribers: sylvestre.ledru, mgorny, hans, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70460

(cherry picked from commit edf6717)

[profile] Fix file contention causing dropped counts on Windows under…

… -fprofile-generate

See PR43425:
https://bugs.llvm.org/show_bug.cgi?id=43425

When writing profile data on Windows we were opening profile file with
exclusive read/write access.

In case we are trying to write to the file from multiple processes
simultaneously, subsequent calls to CreateFileA would return
INVALID_HANDLE_VALUE.

To fix this, I changed to open without exclusive access and then take a
lock.

Patch by Michael Holman!

Differential revision: https://reviews.llvm.org/D70330

(cherry picked from commit 900d8a9)