1;Check 5.5 Parameter Passing --> Stage C --> C.5 statement, when NSAA is not
2;equal to SP.
3;
4; Our purpose: make NSAA != SP, and only after start to use GPRs, then pass
5;              byval parameter and check that it goes to stack only.
6;
7;Co-Processor register candidates may be either in VFP or in stack, so after
8;all VFP are allocated, stack is used. We can use stack without GPR allocation
9;in that case, passing 9 f64 params, for example.
10;First eight params goes to d0-d7, ninth one goes to the stack.
11;Now, as 10th parameter, we pass i32, and it must go to R0.
12;
13;For more information,
14;please, read 5.5 Parameter Passing, Stage C, stages C.2.cp, C.4 and C.5
15;
16;
17;RUN: llc -mtriple=thumbv7-linux-gnueabihf -float-abi=hard < %s | FileCheck %s
18
19%struct_t = type { i32, i32, i32, i32 }
20@static_val = constant %struct_t { i32 777, i32 888, i32 999, i32 1000 }
21declare void @fooUseStruct(%struct_t*)
22
23define void @foo2(double %p0, ; --> D0
24                  double %p1, ; --> D1
25		  double %p2, ; --> D2
26		  double %p3, ; --> D3
27		  double %p4, ; --> D4
28		  double %p5, ; --> D5
29		  double %p6, ; --> D6
30		  double %p7, ; --> D7
31		  double %p8, ; --> Stack
32		  i32 %p9,    ; --> R0
33                  %struct_t* byval(%struct_t) %p10) ; --> Stack+8
34{
35entry:
36;CHECK:     push {r7, lr}
37;CHECK-NOT: stm
38;CHECK:     add r0, sp, #16
39;CHECK:     bl fooUseStruct
40  call void @fooUseStruct(%struct_t* %p10)
41
42  ret void
43}
44
45define void @doFoo2() {
46entry:
47;CHECK-NOT: ldm
48  tail call void @foo2(double 23.0, ; --> D0
49                       double 23.1, ; --> D1
50		       double 23.2, ; --> D2
51                       double 23.3, ; --> D3
52                       double 23.4, ; --> D4
53                       double 23.5, ; --> D5
54                       double 23.6, ; --> D6
55                       double 23.7, ; --> D7
56                       double 23.8, ; --> Stack
57                       i32 43,      ; --> R0, not Stack+8
58                       %struct_t* byval(%struct_t) @static_val) ; --> Stack+8, not R1
59  ret void
60}
61
62