| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 2 | |
| 3 | ; CHECK: derived %next_element_ptr base %array_obj |
| 4 | |
| 5 | define i32 @null_in_array(i64 addrspace(1)* %array_obj) gc "statepoint-example" { |
| 6 | entry: |
| 7 | %array_len_pointer.i64 = getelementptr i64, i64 addrspace(1)* %array_obj, i32 1 |
| 8 | %array_len_pointer.i32 = bitcast i64 addrspace(1)* %array_len_pointer.i64 to i32 addrspace(1)* |
| 9 | %array_len = load i32, i32 addrspace(1)* %array_len_pointer.i32 |
| 10 | %array_elems = bitcast i32 addrspace(1)* %array_len_pointer.i32 to i64 addrspace(1)* addrspace(1)* |
| 11 | br label %loop_check |
| 12 | |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 13 | loop_check: ; preds = %loop_back, %entry |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 14 | %index = phi i32 [ 0, %entry ], [ %next_index, %loop_back ] |
| 15 | %current_element_ptr = phi i64 addrspace(1)* addrspace(1)* [ %array_elems, %entry ], [ %next_element_ptr, %loop_back ] |
| 16 | %index_lt = icmp ult i32 %index, %array_len |
| 17 | br i1 %index_lt, label %check_for_null, label %not_found |
| 18 | |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 19 | check_for_null: ; preds = %loop_check |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 20 | %current_element = load i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr |
| 21 | %is_null = icmp eq i64 addrspace(1)* %current_element, null |
| 22 | br i1 %is_null, label %found, label %loop_back |
| 23 | |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 24 | loop_back: ; preds = %check_for_null |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 25 | %next_element_ptr = getelementptr i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr, i32 1 |
| 26 | %next_index = add i32 %index, 1 |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 27 | call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 28 | br label %loop_check |
| 29 | |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 30 | not_found: ; preds = %loop_check |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 31 | ret i32 -1 |
| 32 | |
| Sanjoy Das | 0407108 | 2016-01-29 00:28:57 +0000 | [diff] [blame] | 33 | found: ; preds = %check_for_null |
| Philip Reames | a5aeaf4 | 2015-02-28 00:20:48 +0000 | [diff] [blame] | 34 | ret i32 %index |
| 35 | } |
| 36 | |
| 37 | declare void @do_safepoint() |