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(i8* %Data) nounwind ssp {
15 %1 = getelementptr inbounds i8, i8* %Data, i32 12
16 %2 = bitcast i8* %1 to %"myclass"*
17 tail call void @abc(%"myclass"* %2) nounwind
18 tail call void @def(%"myclass"* %2) nounwind
19 %3 = getelementptr inbounds i8, i8* %Data, i32 8
20 %4 = bitcast i8* %3 to i8**
21 %5 = load i8*, i8** %4, align 4
22 tail call void @ghi(i8* %5) nounwind
23 %6 = bitcast i8* %Data to void (i8*)**
24 %7 = load void (i8*)*, void (i8*)** %6, align 4
25 %8 = getelementptr inbounds i8, i8* %Data, i32 4
26 %9 = bitcast i8* %8 to i8**
27 %10 = load i8*, i8** %9, align 4
28 %11 = icmp eq i8* %Data, null
29 br i1 %11, label %14, label %12
31 ; <label>:12 ; preds = %0
32 %13 = tail call %"myclass"* @jkl(%"myclass"* %2) nounwind
33 tail call void @mno(i8* %Data) nounwind
36 ; <label>:14 ; preds = %12, %0
37 tail call void %7(i8* %10) nounwind
41 declare void @mno(i8*)
43 declare void @def(%"myclass"*)
45 declare void @abc(%"myclass"*)
47 declare void @ghi(i8*)
49 declare %"myclass"* @jkl(%"myclass"*) nounwind