Auto merge of rust-lang#68525 - tlively:emcc-codegen-sigsegv-66308, r=alexcrichton

Update LLVM to fix crash on Emscripten targets

Fixes rust-lang#66308 (for real this time). r? @alexcrichton

Author: bors

src/llvm-project

@@ -0,0 +1,8 @@
+// build-pass
+// compile-flags: --crate-type lib -C opt-level=0
+
+// Regression test for LLVM crash affecting Emscripten targets
+
+pub fn foo() {
+    (0..0).rev().next();
+}