Update LLVM to fix crash on Emscripten targets

Adds a small Rust regression test for #66308.

r? @alexcrichton

diff --git a/src/test/ui/issues/issue-66308.rs b/src/test/ui/issues/issue-66308.rs
new file mode 100644 (file)
index 0000000..5dc9378
--- /dev/null
+++ b/src/test/ui/issues/issue-66308.rs
@@ -0,0 +1,8 @@
+// build-pass
+// compile-flags: --crate-type lib
+
+// Regression test for LLVM crash affecting Emscripten targets
+
+pub fn foo() {
+    (0..0).rev().next();
+}