1; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=R600-CHECK
2; RUN: llc < %s -march=r600 -mcpu=SI | FileCheck %s --check-prefix=SI-CHECK
3
4; This test checks that uses and defs of the AR register happen in the same
5; instruction clause.
6
7; R600-CHECK-LABEL: @mova_same_clause
8; R600-CHECK: MOVA_INT
9; R600-CHECK-NOT: ALU clause
10; R600-CHECK: 0 + AR.x
11; R600-CHECK: MOVA_INT
12; R600-CHECK-NOT: ALU clause
13; R600-CHECK: 0 + AR.x
14
15; SI-CHECK-LABEL: @mova_same_clause
16; SI-CHECK: V_READFIRSTLANE
17; SI-CHECK: V_MOVRELD
18; SI-CHECK: S_CBRANCH
19; SI-CHECK: V_READFIRSTLANE
20; SI-CHECK: V_MOVRELD
21; SI-CHECK: S_CBRANCH
22define void @mova_same_clause(i32 addrspace(1)* nocapture %out, i32 addrspace(1)* nocapture %in) {
23entry:
24  %stack = alloca [5 x i32], align 4
25  %0 = load i32 addrspace(1)* %in, align 4
26  %arrayidx1 = getelementptr inbounds [5 x i32]* %stack, i32 0, i32 %0
27  store i32 4, i32* %arrayidx1, align 4
28  %arrayidx2 = getelementptr inbounds i32 addrspace(1)* %in, i32 1
29  %1 = load i32 addrspace(1)* %arrayidx2, align 4
30  %arrayidx3 = getelementptr inbounds [5 x i32]* %stack, i32 0, i32 %1
31  store i32 5, i32* %arrayidx3, align 4
32  %arrayidx10 = getelementptr inbounds [5 x i32]* %stack, i32 0, i32 0
33  %2 = load i32* %arrayidx10, align 4
34  store i32 %2, i32 addrspace(1)* %out, align 4
35  %arrayidx12 = getelementptr inbounds [5 x i32]* %stack, i32 0, i32 1
36  %3 = load i32* %arrayidx12
37  %arrayidx13 = getelementptr inbounds i32 addrspace(1)* %out, i32 1
38  store i32 %3, i32 addrspace(1)* %arrayidx13
39  ret void
40}
41
42; This test checks that the stack offset is calculated correctly for structs.
43; All register loads/stores should be optimized away, so there shouldn't be
44; any MOVA instructions.
45;
46; XXX: This generated code has unnecessary MOVs, we should be able to optimize
47; this.
48
49; R600-CHECK-LABEL: @multiple_structs
50; R600-CHECK-NOT: MOVA_INT
51; SI-CHECK-LABEL: @multiple_structs
52; SI-CHECK-NOT: V_MOVREL
53%struct.point = type { i32, i32 }
54
55define void @multiple_structs(i32 addrspace(1)* %out) {
56entry:
57  %a = alloca %struct.point
58  %b = alloca %struct.point
59  %a.x.ptr = getelementptr %struct.point* %a, i32 0, i32 0
60  %a.y.ptr = getelementptr %struct.point* %a, i32 0, i32 1
61  %b.x.ptr = getelementptr %struct.point* %b, i32 0, i32 0
62  %b.y.ptr = getelementptr %struct.point* %b, i32 0, i32 1
63  store i32 0, i32* %a.x.ptr
64  store i32 1, i32* %a.y.ptr
65  store i32 2, i32* %b.x.ptr
66  store i32 3, i32* %b.y.ptr
67  %a.indirect.ptr = getelementptr %struct.point* %a, i32 0, i32 0
68  %b.indirect.ptr = getelementptr %struct.point* %b, i32 0, i32 0
69  %a.indirect = load i32* %a.indirect.ptr
70  %b.indirect = load i32* %b.indirect.ptr
71  %0 = add i32 %a.indirect, %b.indirect
72  store i32 %0, i32 addrspace(1)* %out
73  ret void
74}
75
76; Test direct access of a private array inside a loop.  The private array
77; loads and stores should be lowered to copies, so there shouldn't be any
78; MOVA instructions.
79
80; R600-CHECK-LABLE: @direct_loop
81; R600-CHECK-NOT: MOVA_INT
82; SI-CHECK-LABEL: @direct_loop
83; SI-CHECK-NOT: V_MOVREL
84
85define void @direct_loop(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
86entry:
87  %prv_array_const = alloca [2 x i32]
88  %prv_array = alloca [2 x i32]
89  %a = load i32 addrspace(1)* %in
90  %b_src_ptr = getelementptr i32 addrspace(1)* %in, i32 1
91  %b = load i32 addrspace(1)* %b_src_ptr
92  %a_dst_ptr = getelementptr [2 x i32]* %prv_array_const, i32 0, i32 0
93  store i32 %a, i32* %a_dst_ptr
94  %b_dst_ptr = getelementptr [2 x i32]* %prv_array_const, i32 0, i32 1
95  store i32 %b, i32* %b_dst_ptr
96  br label %for.body
97
98for.body:
99  %inc = phi i32 [0, %entry], [%count, %for.body]
100  %x_ptr = getelementptr [2 x i32]* %prv_array_const, i32 0, i32 0
101  %x = load i32* %x_ptr
102  %y_ptr = getelementptr [2 x i32]* %prv_array, i32 0, i32 0
103  %y = load i32* %y_ptr
104  %xy = add i32 %x, %y
105  store i32 %xy, i32* %y_ptr
106  %count = add i32 %inc, 1
107  %done = icmp eq i32 %count, 4095
108  br i1 %done, label %for.end, label %for.body
109
110for.end:
111  %value_ptr = getelementptr [2 x i32]* %prv_array, i32 0, i32 0
112  %value = load i32* %value_ptr
113  store i32 %value, i32 addrspace(1)* %out
114  ret void
115}
116