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; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=unreachable-basic-blocks,basic-blocks --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
; RUN: FileCheck %s < %t
; CHECK-INTERESTINGNESS: @func(
; CHECK-INTERESTINGNESS: store
; CHECK-INTERESTINGNESS: store
; CHECK-INTERESTINGNESS: store
; CHECK: bb:
; CHECK-NEXT: br i1 %arg1, label %bb3, label %bb7
; CHECK: bb3: ; preds = %bb
; CHECK-NEXT: br i1 %arg2, label %bb4, label %bb7
; CHECK: bb4: ; preds = %bb3
; CHECK-NEXT: store i32 0, ptr addrspace(1) null, align 4
; CHECK-NEXT: ret void
; CHECK: bb7: ; preds = %bb3, %bb
; CHECK-NEXT: %i = phi i1 [ false, %bb ], [ true, %bb3 ]
; CHECK-NEXT: store i32 1, ptr addrspace(1) null, align 4
; CHECK-NEXT: br label %bb10
; CHECK: bb10: ; preds = %bb7
; CHECK-NEXT: store i32 2, ptr addrspace(1) null, align 4
; CHECK-NEXT: unreachable
define amdgpu_kernel void @func(i1 %arg, i1 %arg1, i1 %arg2) {
bb:
br i1 %arg1, label %bb3, label %bb7
bb3: ; preds = %bb
br i1 %arg2, label %bb4, label %bb7
bb4: ; preds = %bb3
store i32 0, ptr addrspace(1) null
br label %bb5
bb5: ; preds = %bb4
unreachable
bb6: ; No predecessors!
unreachable
bb7: ; preds = %bb3, %bb
%i = phi i1 [ false, %bb ], [ true, %bb3 ]
store i32 1, ptr addrspace(1) null
br i1 %arg, label %bb10, label %bb8
bb8: ; preds = %bb7
br i1 %i, label %bb9, label %bb9
bb9: ; preds = %bb8, %bb8
unreachable
bb10: ; preds = %bb7
store i32 2, ptr addrspace(1) null
unreachable
}
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