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Rollup merge of #77710 - fortanix:raoul/bugfix-lvi, r=nikic

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Update submodule llvm to get LVI bugfix

The LLVM LVI mitigations used register %rcs as a clobber register. This is problematic when rust uses this register to return (part of) function values. The problem was fixed upstream in:

    https://reviews.llvm.org/D88924
    https://reviews.llvm.org/D88925

PR https://github.com/rust-lang/llvm-project/pull/79 merged it in the llvm_project. This PR updates the submodule

Bug report: https://bugs.llvm.org/show_bug.cgi?id=47740
Fixes #77607

cc: @jethrogb
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Jonas Schievink 2020-10-08 23:23:19 +02:00 committed by GitHub
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