xref: /llvm-project/llvm/test/CodeGen/AMDGPU/call-alias-register-usage2.ll (revision 82944595fa5509fdbd574318e9041f2edab32e5f)
1; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck %s
2
3; CallGraphAnalysis, which CodeGenSCC order depends on, does not look
4; through aliases. If GlobalOpt is never run, we do not see direct
5; calls,
6
7@alias2 = hidden alias void (), ptr @aliasee_vgpr64_sgpr102
8
9; CHECK-LABEL: {{^}}kernel2:
10; CHECK:      .amdhsa_next_free_vgpr max(totalnumvgprs(kernel2.num_agpr, kernel2.num_vgpr), 1, 0)
11; CHECK-NEXT: .amdhsa_next_free_sgpr (max(kernel2.numbered_sgpr+(extrasgprs(kernel2.uses_vcc, kernel2.uses_flat_scratch, 1)), 1, 0))-(extrasgprs(kernel2.uses_vcc, kernel2.uses_flat_scratch, 1))
12
13; CHECK:      .set kernel2.num_vgpr, max(41, .Laliasee_vgpr64_sgpr102.num_vgpr)
14; CHECK-NEXT: .set kernel2.num_agpr, max(0, .Laliasee_vgpr64_sgpr102.num_agpr)
15; CHECK-NEXT: .set kernel2.numbered_sgpr, max(33, .Laliasee_vgpr64_sgpr102.numbered_sgpr)
16define amdgpu_kernel void @kernel2() #0 {
17bb:
18  call void @alias2() #2
19  ret void
20}
21
22; CHECK:      .set .Laliasee_vgpr64_sgpr102.num_vgpr, 53
23; CHECK-NEXT: .set .Laliasee_vgpr64_sgpr102.num_agpr, 0
24; CHECK-NEXT: .set .Laliasee_vgpr64_sgpr102.numbered_sgpr, 32
25define internal void @aliasee_vgpr64_sgpr102() #1 {
26bb:
27  call void asm sideeffect "; clobber v52 ", "~{v52}"()
28  ret void
29}
30
31attributes #0 = { noinline norecurse nounwind optnone }
32attributes #1 = { noinline norecurse nounwind readnone willreturn "amdgpu-waves-per-eu"="4,10" }
33attributes #2 = { nounwind readnone willreturn }
34
35!llvm.module.flags = !{!0}
36!0 = !{i32 1, !"amdhsa_code_object_version", i32 500}
37