llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-8.ll

; RUN: opt < %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s
; RUN: opt < %s -passes=rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s

; CHECK: derived %next_element_ptr base %array_obj

define i32 @null_in_array(i64 addrspace(1)* %array_obj) gc "statepoint-example" {
entry:
  %array_len_pointer.i64 = getelementptr i64, i64 addrspace(1)* %array_obj, i32 1
  %array_len_pointer.i32 = bitcast i64 addrspace(1)* %array_len_pointer.i64 to i32 addrspace(1)*
  %array_len = load i32, i32 addrspace(1)* %array_len_pointer.i32
  %array_elems = bitcast i32 addrspace(1)* %array_len_pointer.i32 to i64 addrspace(1)* addrspace(1)*
  br label %loop_check

loop_check:                                       ; preds = %loop_back, %entry
  %index = phi i32 [ 0, %entry ], [ %next_index, %loop_back ]
  %current_element_ptr = phi i64 addrspace(1)* addrspace(1)* [ %array_elems, %entry ], [ %next_element_ptr, %loop_back ]
  %index_lt = icmp ult i32 %index, %array_len
  br i1 %index_lt, label %check_for_null, label %not_found

check_for_null:                                   ; preds = %loop_check
  %current_element = load i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr
  %is_null = icmp eq i64 addrspace(1)* %current_element, null
  br i1 %is_null, label %found, label %loop_back

loop_back:                                        ; preds = %check_for_null
  %next_element_ptr = getelementptr i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr, i32 1
  %next_index = add i32 %index, 1
  call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ]
  br label %loop_check

not_found:                                        ; preds = %loop_check
  ret i32 -1

found:                                            ; preds = %check_for_null
  ret i32 %index
}

declare void @do_safepoint()