xref: /llvm-project/llvm/test/CodeGen/AMDGPU/call-alias-register-usage-agpr.ll (revision 82944595fa5509fdbd574318e9041f2edab32e5f)
1; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 < %s | FileCheck -check-prefix=ALL %s
2; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a < %s | FileCheck -check-prefixes=ALL,GFX90A %s
3
4; CallGraphAnalysis, which CodeGenSCC order depends on, does not look
5; through aliases. If GlobalOpt is never run, we do not see direct
6; calls,
7
8@alias = hidden alias void (), ptr @aliasee_default
9
10; ALL-LABEL: {{^}}kernel:
11; ALL:          .amdhsa_next_free_vgpr max(totalnumvgprs(kernel.num_agpr, kernel.num_vgpr), 1, 0)
12; ALL-NEXT:     .amdhsa_next_free_sgpr (max(kernel.numbered_sgpr+(extrasgprs(kernel.uses_vcc, kernel.uses_flat_scratch, 1)), 1, 0))-(extrasgprs(kernel.uses_vcc, kernel.uses_flat_scratch, 1))
13; GFX90A-NEXT:  .amdhsa_accum_offset ((((((alignto(max(1, kernel.num_vgpr), 4))/4)-1)&(~65536))&63)+1)*4
14
15; ALL:       .set kernel.num_vgpr, max(41, .Laliasee_default.num_vgpr)
16; ALL-NEXT:  .set kernel.num_agpr, max(0, .Laliasee_default.num_agpr)
17; ALL-NEXT:  .set kernel.numbered_sgpr, max(33, .Laliasee_default.numbered_sgpr)
18define amdgpu_kernel void @kernel() #0 {
19bb:
20  call void @alias() #2
21  ret void
22}
23
24define internal void @aliasee_default() #1 {
25bb:
26  call void asm sideeffect "; clobber a26 ", "~{a26}"()
27  ret void
28}
29; ALL:      .set .Laliasee_default.num_vgpr, 0
30; ALL-NEXT: .set .Laliasee_default.num_agpr, 27
31; ALL-NEXT: .set .Laliasee_default.numbered_sgpr, 32
32
33attributes #0 = { noinline norecurse nounwind optnone }
34attributes #1 = { noinline norecurse nounwind readnone willreturn }
35attributes #2 = { nounwind readnone willreturn }
36
37!llvm.module.flags = !{!0}
38!0 = !{i32 1, !"amdhsa_code_object_version", i32 500}
39