1 ; RUN: llc < %s -mtriple=thumbv7s-apple-ios6.0.0 -verify-machineinstrs
3 ; Check to make sure the tail-call return at the end doesn't use a
4 ; callee-saved register. Register hinting from t2LDRDri was getting this
5 ; wrong. The intervening call will force allocation to try a high register
6 ; first, so the hint will attempt to fire, but must be rejected due to
7 ; not being in the allocation order for the tcGPR register class.
8 ; The machine instruction verifier will make sure that all actually worked
9 ; out the way it's supposed to.
11 %"myclass" = type { %struct.foo }
12 %struct.foo = type { i32, [40 x i8] }
14 define hidden void @func(ptr %Data) nounwind ssp {
15 %1 = getelementptr inbounds i8, ptr %Data, i32 12
16 tail call void @abc(ptr %1) nounwind
17 tail call void @def(ptr %1) nounwind
18 %2 = getelementptr inbounds i8, ptr %Data, i32 8
19 %3 = load ptr, ptr %2, align 4
20 tail call void @ghi(ptr %3) nounwind
21 %4 = load ptr, ptr %Data, align 4
22 %5 = getelementptr inbounds i8, ptr %Data, i32 4
23 %6 = load ptr, ptr %5, align 4
24 %7 = icmp eq ptr %Data, null
25 br i1 %7, label %10, label %8
27 ; <label>:12 ; preds = %0
28 %9 = tail call ptr @jkl(ptr %1) nounwind
29 tail call void @mno(ptr %Data) nounwind
32 ; <label>:14 ; preds = %8, %0
33 tail call void %4(ptr %6) nounwind
37 declare void @mno(ptr)
39 declare void @def(ptr)
41 declare void @abc(ptr)
43 declare void @ghi(ptr)
45 declare ptr @jkl(ptr) nounwind