Remove outdated LLVMRustBuildLandingPad() wrapper

The function was added as a wrapper to handle compatibility with older
LLVM versions that we no longer support, so it can be removed.

Refs #46437

src/librustc_llvm/ffi.rs

@@ -812,13 +812,12 @@ extern "C" {
                                Bundle: OperandBundleDefRef,
                                Name: *const c_char)
                                -> ValueRef;
-    pub fn LLVMRustBuildLandingPad(B: BuilderRef,
-                                   Ty: TypeRef,
-                                   PersFn: ValueRef,
-                                   NumClauses: c_uint,
-                                   Name: *const c_char,
-                                   F: ValueRef)
-                                   -> ValueRef;
+    pub fn LLVMBuildLandingPad(B: BuilderRef,
+                               Ty: TypeRef,
+                               PersFn: ValueRef,
+                               NumClauses: c_uint,
+                               Name: *const c_char)
+                               -> ValueRef;
     pub fn LLVMBuildResume(B: BuilderRef, Exn: ValueRef) -> ValueRef;
     pub fn LLVMBuildUnreachable(B: BuilderRef) -> ValueRef;
 

src/librustc_trans/builder.rs

@@ -1012,12 +1012,11 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
     }
 
     pub fn landing_pad(&self, ty: Type, pers_fn: ValueRef,
-                       num_clauses: usize,
-                       llfn: ValueRef) -> ValueRef {
+                       num_clauses: usize) -> ValueRef {
         self.count_insn("landingpad");
         unsafe {
-            llvm::LLVMRustBuildLandingPad(self.llbuilder, ty.to_ref(), pers_fn,
-                                          num_clauses as c_uint, noname(), llfn)
+            llvm::LLVMBuildLandingPad(self.llbuilder, ty.to_ref(), pers_fn,
+                                      num_clauses as c_uint, noname())
         }
     }
 

src/librustc_trans/intrinsic.rs

@@ -925,7 +925,7 @@ fn trans_gnu_try<'a, 'tcx>(bcx: &Builder<'a, 'tcx>,
         // rust_try ignores the selector.
         let lpad_ty = Type::struct_(ccx, &[Type::i8p(ccx), Type::i32(ccx)],
                                     false);
-        let vals = catch.landing_pad(lpad_ty, bcx.ccx.eh_personality(), 1, catch.llfn());
+        let vals = catch.landing_pad(lpad_ty, bcx.ccx.eh_personality(), 1);
         catch.add_clause(vals, C_null(Type::i8p(ccx)));
         let ptr = catch.extract_value(vals, 0);
         let ptr_align = bcx.tcx().data_layout.pointer_align;

src/librustc_trans/mir/block.rs

@@ -753,7 +753,7 @@ impl<'a, 'tcx> MirContext<'a, 'tcx> {
 
         let llpersonality = self.ccx.eh_personality();
         let llretty = self.landing_pad_type();
-        let lp = bcx.landing_pad(llretty, llpersonality, 1, self.llfn);
+        let lp = bcx.landing_pad(llretty, llpersonality, 1);
         bcx.set_cleanup(lp);
 
         let slot = self.get_personality_slot(&bcx);

src/rustllvm/RustWrapper.cpp

@@ -1144,13 +1144,6 @@ extern "C" void LLVMRustWriteSMDiagnosticToString(LLVMSMDiagnosticRef D,
   unwrap(D)->print("", OS);
 }
 
-extern "C" LLVMValueRef
-LLVMRustBuildLandingPad(LLVMBuilderRef B, LLVMTypeRef Ty,
-                        LLVMValueRef PersFn, unsigned NumClauses,
-                        const char *Name, LLVMValueRef F) {
-  return LLVMBuildLandingPad(B, Ty, PersFn, NumClauses, Name);
-}
-
 extern "C" LLVMValueRef LLVMRustBuildCleanupPad(LLVMBuilderRef B,
                                                 LLVMValueRef ParentPad,
                                                 unsigned ArgCount,