[AVR][No Upstream] Use forked LLVM with non-upstreamed fixes

TimNN · dylanmckay · commit 25ddeb2bfe14 · 2018-12-19T21:57:18.000+13:00
diff --git a/.gitmodules b/.gitmodules
@@ -1,7 +1,7 @@
 [submodule "src/llvm"]
 	path = src/llvm
-	url = https://github.com/rust-lang/llvm.git
-	branch = master
+	url = https://github.com/avr-rust/llvm.git
+	branch = avr-rust-2018-12-18
 [submodule "src/rust-installer"]
 	path = src/tools/rust-installer
 	url = https://github.com/rust-lang/rust-installer.git
diff --git a/src/llvm b/src/llvm
@@ -1 +1 @@
-Subproject commit 95185c8c801c765ac1072392d081d265af9fb310
+Subproject commit 256a0879cabb5460b2da3a69235cb5571588da81
