diff --git a/compiler/rustc_codegen_llvm/src/consts.rs b/compiler/rustc_codegen_llvm/src/consts.rs
index 73821b1685df4..307c1264dc1be 100644
--- a/compiler/rustc_codegen_llvm/src/consts.rs
+++ b/compiler/rustc_codegen_llvm/src/consts.rs
@@ -374,15 +374,7 @@ impl<'ll> StaticMethods for CodegenCx<'ll, '_> {
 
             let g = self.get_static(def_id);
 
-            // boolean SSA values are i1, but they have to be stored in i8 slots,
-            // otherwise some LLVM optimization passes don't work as expected
-            let mut val_llty = self.val_ty(v);
-            let v = if val_llty == self.type_i1() {
-                val_llty = self.type_i8();
-                llvm::LLVMConstZExt(v, val_llty)
-            } else {
-                v
-            };
+            let val_llty = self.val_ty(v);
 
             let instance = Instance::mono(self.tcx, def_id);
             let ty = instance.ty(self.tcx, ty::ParamEnv::reveal_all());
diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index a038b3af03dd6..7fc02a95be0a9 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -969,7 +969,6 @@ extern "C" {
         ConstantIndices: *const &'a Value,
         NumIndices: c_uint,
     ) -> &'a Value;
-    pub fn LLVMConstZExt<'a>(ConstantVal: &'a Value, ToType: &'a Type) -> &'a Value;
     pub fn LLVMConstPtrToInt<'a>(ConstantVal: &'a Value, ToType: &'a Type) -> &'a Value;
     pub fn LLVMConstIntToPtr<'a>(ConstantVal: &'a Value, ToType: &'a Type) -> &'a Value;
     pub fn LLVMConstBitCast<'a>(ConstantVal: &'a Value, ToType: &'a Type) -> &'a Value;