1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=rewrite-statepoints-for-gc -S 2>&1 | FileCheck %s 3 4; derived %next_element_ptr base %array_obj 5define i32 @null_in_array(ptr addrspace(1) %array_obj) gc "statepoint-example" { 6; CHECK-LABEL: @null_in_array( 7; CHECK-NEXT: entry: 8; CHECK-NEXT: [[ARRAY_LEN_POINTER_I64:%.*]] = getelementptr i64, ptr addrspace(1) [[ARRAY_OBJ:%.*]], i32 1 9; CHECK-NEXT: [[ARRAY_LEN:%.*]] = load i32, ptr addrspace(1) [[ARRAY_LEN_POINTER_I64]], align 4 10; CHECK-NEXT: br label [[LOOP_CHECK:%.*]] 11; CHECK: loop_check: 12; CHECK-NEXT: [[DOT0:%.*]] = phi ptr addrspace(1) [ [[ARRAY_OBJ]], [[ENTRY:%.*]] ], [ [[ARRAY_OBJ_RELOCATED_CASTED:%.*]], [[LOOP_BACK:%.*]] ] 13; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[NEXT_INDEX:%.*]], [[LOOP_BACK]] ] 14; CHECK-NEXT: [[CURRENT_ELEMENT_PTR:%.*]] = phi ptr addrspace(1) [ [[ARRAY_LEN_POINTER_I64]], [[ENTRY]] ], [ [[NEXT_ELEMENT_PTR_RELOCATED_CASTED:%.*]], [[LOOP_BACK]] ] 15; CHECK-NEXT: [[INDEX_LT:%.*]] = icmp ult i32 [[INDEX]], [[ARRAY_LEN]] 16; CHECK-NEXT: br i1 [[INDEX_LT]], label [[CHECK_FOR_NULL:%.*]], label [[NOT_FOUND:%.*]] 17; CHECK: check_for_null: 18; CHECK-NEXT: [[CURRENT_ELEMENT:%.*]] = load ptr addrspace(1), ptr addrspace(1) [[CURRENT_ELEMENT_PTR]], align 8 19; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq ptr addrspace(1) [[CURRENT_ELEMENT]], null 20; CHECK-NEXT: br i1 [[IS_NULL]], label [[FOUND:%.*]], label [[LOOP_BACK]] 21; CHECK: loop_back: 22; CHECK-NEXT: [[NEXT_ELEMENT_PTR:%.*]] = getelementptr ptr addrspace(1), ptr addrspace(1) [[CURRENT_ELEMENT_PTR]], i32 1 23; CHECK-NEXT: [[NEXT_INDEX]] = add i32 [[INDEX]], 1 24; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0), "gc-live"(ptr addrspace(1) [[NEXT_ELEMENT_PTR]], ptr addrspace(1) [[DOT0]]) ] 25; CHECK-NEXT: [[NEXT_ELEMENT_PTR_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 1, i32 0) 26; CHECK-NEXT: [[ARRAY_OBJ_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 1, i32 1) 27; CHECK-NEXT: br label [[LOOP_CHECK]] 28; CHECK: not_found: 29; CHECK-NEXT: ret i32 -1 30; CHECK: found: 31; CHECK-NEXT: ret i32 [[INDEX]] 32; 33entry: 34 %array_len_pointer.i64 = getelementptr i64, ptr addrspace(1) %array_obj, i32 1 35 %array_len = load i32, ptr addrspace(1) %array_len_pointer.i64 36 br label %loop_check 37 38loop_check: ; preds = %loop_back, %entry 39 %index = phi i32 [ 0, %entry ], [ %next_index, %loop_back ] 40 %current_element_ptr = phi ptr addrspace(1) [ %array_len_pointer.i64, %entry ], [ %next_element_ptr, %loop_back ] 41 %index_lt = icmp ult i32 %index, %array_len 42 br i1 %index_lt, label %check_for_null, label %not_found 43 44check_for_null: ; preds = %loop_check 45 %current_element = load ptr addrspace(1), ptr addrspace(1) %current_element_ptr 46 %is_null = icmp eq ptr addrspace(1) %current_element, null 47 br i1 %is_null, label %found, label %loop_back 48 49loop_back: ; preds = %check_for_null 50 %next_element_ptr = getelementptr ptr addrspace(1), ptr addrspace(1) %current_element_ptr, i32 1 51 %next_index = add i32 %index, 1 52 call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] 53 br label %loop_check 54 55not_found: ; preds = %loop_check 56 ret i32 -1 57 58found: ; preds = %check_for_null 59 ret i32 %index 60} 61 62declare void @do_safepoint() 63