1 files changed, 13 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0664.md b/compiler/rustc_error_codes/src/error_codes/E0664.md
new file mode 100644
index 000000000..34135d5db
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0664.md
@@ -0,0 +1,13 @@
+#### Note: this error code is no longer emitted by the compiler.
+
+A clobber was surrounded by braces in the `llvm_asm` macro.
+
+Erroneous code example:
+
+```ignore (no longer emitted)
+llvm_asm!("mov $$0x200, %eax"
+          :
+          :
+          : "{eax}"
+         );
+```