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-rw-r--r--compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs
index 12b6ffa3c0b..9dd84ad9a4d 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/enzyme_ffi.rs
@@ -25,6 +25,7 @@ pub(crate) enum CConcreteType {
     DT_Half = 3,
     DT_Float = 4,
     DT_Double = 5,
+    // FIXME(KMJ-007): handle f128 using long double here(https://github.com/EnzymeAD/Enzyme/issues/1600)
     DT_Unknown = 6,
 }