1 files changed, 38 insertions, 0 deletions
diff --git a/test/Transforms/RewriteStatepointsForGC/base-pointers-8.ll b/test/Transforms/RewriteStatepointsForGC/base-pointers-8.ll
new file mode 100644
index 0000000..488b61e
--- /dev/null
+++ b/test/Transforms/RewriteStatepointsForGC/base-pointers-8.ll
@@ -0,0 +1,38 @@
+; RUN: opt %s -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:
+  %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:
+  %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:
+  %next_element_ptr = getelementptr i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr, i32 1
+  %next_index = add i32 %index, 1
+  %safepoint_token = call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @do_safepoint, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
+  br label %loop_check
+
+not_found:
+  ret i32 -1
+
+found:
+  ret i32 %index
+}
+
+declare void @do_safepoint()
+declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()*, i32, i32, ...)