forked from OSchip/llvm-project
39 lines
1.8 KiB
LLVM
39 lines
1.8 KiB
LLVM
|
; 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()
|