38 lines
1.7 KiB
LLVM
38 lines
1.7 KiB
LLVM
; RUN: opt %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s
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; CHECK: derived %next_element_ptr base %array_obj
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define i32 @null_in_array(i64 addrspace(1)* %array_obj) gc "statepoint-example" {
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entry:
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%array_len_pointer.i64 = getelementptr i64, i64 addrspace(1)* %array_obj, i32 1
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%array_len_pointer.i32 = bitcast i64 addrspace(1)* %array_len_pointer.i64 to i32 addrspace(1)*
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%array_len = load i32, i32 addrspace(1)* %array_len_pointer.i32
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%array_elems = bitcast i32 addrspace(1)* %array_len_pointer.i32 to i64 addrspace(1)* addrspace(1)*
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br label %loop_check
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loop_check:
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%index = phi i32 [ 0, %entry ], [ %next_index, %loop_back ]
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%current_element_ptr = phi i64 addrspace(1)* addrspace(1)* [ %array_elems, %entry ], [ %next_element_ptr, %loop_back ]
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%index_lt = icmp ult i32 %index, %array_len
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br i1 %index_lt, label %check_for_null, label %not_found
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check_for_null:
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%current_element = load i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr
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%is_null = icmp eq i64 addrspace(1)* %current_element, null
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br i1 %is_null, label %found, label %loop_back
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loop_back:
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%next_element_ptr = getelementptr i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr, i32 1
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%next_index = add i32 %index, 1
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%safepoint_token = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @do_safepoint, i32 0, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0)
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br label %loop_check
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not_found:
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ret i32 -1
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found:
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ret i32 %index
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}
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declare void @do_safepoint()
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declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...) |