xref: /llvm-project/llvm/test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll (revision 944110353b970fc99de3f012292b4c29d4d91999) 
1; RUN: llc -mtriple=hexagon  -O2 -spill-func-threshold=2 < %s | FileCheck %s
2
3declare i32 @f0(i32, i32, i32, i32, i32, i32)
4
5; CHECK-LABEL: f1:
6; CHECK: save_r16_through_r23
7define i32 @f1(i32 %a0, i32 %a11, i32 %a22, i32 %a33, i32 %a4, i32 %a5) #0 {
8b0:
9  %v0 = call i32 @f0(i32 0, i32 1, i32 2, i32 3, i32 4, i32 5)
10  %v1 = call i32 @f0(i32 %a0, i32 %a11, i32 %a22, i32 %a33, i32 %a4, i32 %a5)
11  %v2 = add i32 %v0, %v1
12  ret i32 %v2
13}
14
15declare i32 @f2(i32, i32, i32, i32)
16
17; CHECK-LABEL: f3:
18; CHECK: save_r16_through_r21
19define i32 @f3(i32 %a0, i32 %a11, i32 %a22, i32 %a33, i32 %a44, i32 %a5) #0 {
20b0:
21  %v0 = call i32 @f2(i32 0, i32 1, i32 2, i32 3)
22  %v1 = call i32 @f2(i32 %a0, i32 %a11, i32 %a22, i32 %a33)
23  %v2 = add i32 %v0, %v1
24  %v3 = add i32 %v2, %a44
25  ret i32 %v3
26}
27
28declare i32 @f4(i32, i32)
29
30; CHECK-LABEL: f5:
31; CHECK-NOT: save_r16_through_r19
32define i32 @f5(i32 %a0, i32 %a11, i32 %a22, i32 %a33, i32 %a4, i32 %a5) #0 {
33b0:
34  %v0 = call i32 @f4(i32 0, i32 1)
35  %v1 = call i32 @f4(i32 %a0, i32 %a11)
36  %v2 = add i32 %v0, %v1
37  ret i32 %v2
38}
39
40declare i32 @f6(i32)
41
42; CHECK-LABEL: f7:
43; CHECK-NOT: save_r16_through_r17
44define i32 @f7(i32 %a0, i32 %a11, i32 %a22, i32 %a3, i32 %a4, i32 %a5) #0 {
45b0:
46  %v0 = call i32 @f6(i32 0)
47  %v1 = call i32 @f6(i32 %a0)
48  ret i32 %v0
49}
50
51attributes #0 = { nounwind }
52