Rollup merge of rust-lang#74239 - AdrianCX:master, r=cuviper

Manishearth · web-flow · commit 2a3637555254 · 2020-07-13T14:10:44.000-07:00
Update llvm-project to latest origin/rustc/10.0-2020-05-05 commit which includes LVI segfault fix when building fortanix/rust-sgx#267 And a few earlier commits.
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit d134a53927fa033ae7e0f3e8ee872ff2dc71468d
+Subproject commit 86b120e6f302d39cd6973b6391fb299d7bc22122
