Rollup merge of #128820 - LYF1999:yf/dev, r=nikic

fix: get llvm type of global val
using `LLVMTypeOf` on a global var always return ptr. so create a new function to access the value type of a global

Author: matthiaskrgr

compiler/rustc_codegen_llvm/src/consts.rs

@@ -390,7 +390,7 @@ impl<'ll> CodegenCx<'ll, '_> {
 let val_llty = self.val_ty(v);
 
 let g = self.get_static_inner(def_id, val_llty);
-let llty = self.val_ty(g);
+let llty = llvm::LLVMGlobalGetValueType(g);
 
 let g = if val_llty == llty {
  g

compiler/rustc_codegen_llvm/src/llvm/ffi.rs

@@ -974,6 +974,7 @@ unsafe extern "C" {
 pubfnLLVMGetAlignment(Global:&Value) -> c_uint;
 pubfnLLVMSetAlignment(Global:&Value,Bytes:c_uint);
 pubfnLLVMSetDLLStorageClass(V:&Value,C:DLLStorageClass);
+pubfnLLVMGlobalGetValueType(Global:&Value) -> &Type;
 
 // Operations on global variables
 pubfnLLVMIsAGlobalVariable(GlobalVar:&Value) -> Option<&Value>;