Auto merge of #133883 - saethlin:remove-polymorphization, r=compiler-errors

Remove polymorphization

This PR removes the flag `-Zpolymorphize` and all the infrastructure in the compiler that exists only to support it, per https://github.com/rust-lang/compiler-team/issues/810.

2 files changed, 3 insertions, 26 deletions

diff --git a/compiler/rustc_codegen_llvm/src/common.rs b/compiler/rustc_codegen_llvm/src/common.rs
index 8852dec7d9f..adfe8aeb5c5 100644
--- a/compiler/rustc_codegen_llvm/src/common.rs
+++ b/compiler/rustc_codegen_llvm/src/common.rs
@@ -302,10 +302,9 @@ impl<'ll, 'tcx> ConstCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                             (value, AddressSpace::DATA)
                         }
                     }
-                    GlobalAlloc::Function { instance, .. } => (
-                        self.get_fn_addr(instance.polymorphize(self.tcx)),
-                        self.data_layout().instruction_address_space,
-                    ),
+                    GlobalAlloc::Function { instance, .. } => {
+                        (self.get_fn_addr(instance), self.data_layout().instruction_address_space)
+                    }
                     GlobalAlloc::VTable(ty, dyn_ty) => {
                         let alloc = self
                             .tcx
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index dee67baaee9..59275254022 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -471,8 +471,6 @@ pub(crate) fn type_di_node<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>) ->
             AdtKind::Enum => enums::build_enum_type_di_node(cx, unique_type_id),
         },
         ty::Tuple(_) => build_tuple_type_di_node(cx, unique_type_id),
-        // Type parameters from polymorphized functions.
-        ty::Param(_) => build_param_type_di_node(cx, t),
         _ => bug!("debuginfo: unexpected type in type_di_node(): {:?}", t),
     };
 
@@ -871,26 +869,6 @@ fn build_foreign_type_di_node<'ll, 'tcx>(
     )
 }
 
-fn build_param_type_di_node<'ll, 'tcx>(
-    cx: &CodegenCx<'ll, 'tcx>,
-    t: Ty<'tcx>,
-) -> DINodeCreationResult<'ll> {
-    debug!("build_param_type_di_node: {:?}", t);
-    let name = format!("{t:?}");
-    DINodeCreationResult {
-        di_node: unsafe {
-            llvm::LLVMRustDIBuilderCreateBasicType(
-                DIB(cx),
-                name.as_c_char_ptr(),
-                name.len(),
-                Size::ZERO.bits(),
-                DW_ATE_unsigned,
-            )
-        },
-        already_stored_in_typemap: false,
-    }
-}
-
 pub(crate) fn build_compile_unit_di_node<'ll, 'tcx>(
     tcx: TyCtxt<'tcx>,
     codegen_unit_name: &str,