1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
; 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()
|
