1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
2 ; RUN: llc -mtriple amdgcn-amdhsa -mcpu=fiji -amdgpu-scalarize-global-loads -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
4 declare i32 @llvm.amdgcn.workitem.id.x()
5 declare i32 @llvm.amdgcn.readfirstlane(i32)
7 define amdgpu_kernel void @readfirstlane_uniform(ptr addrspace(1) noalias nocapture readonly, ptr addrspace(1) noalias nocapture readonly) {
8 ; GCN-LABEL: readfirstlane_uniform:
10 ; GCN-NEXT: s_load_dwordx4 s[0:3], s[4:5], 0x0
11 ; GCN-NEXT: v_readfirstlane_b32 s4, v0
12 ; GCN-NEXT: s_mov_b32 s5, 0
13 ; GCN-NEXT: s_lshl_b64 s[4:5], s[4:5], 2
14 ; GCN-NEXT: s_waitcnt lgkmcnt(0)
15 ; GCN-NEXT: s_add_u32 s0, s0, s4
16 ; GCN-NEXT: s_addc_u32 s1, s1, s5
17 ; GCN-NEXT: s_load_dword s4, s[0:1], 0x0
18 ; GCN-NEXT: s_add_u32 s0, s2, 40
19 ; GCN-NEXT: s_addc_u32 s1, s3, 0
20 ; GCN-NEXT: v_mov_b32_e32 v0, s0
21 ; GCN-NEXT: v_mov_b32_e32 v1, s1
22 ; GCN-NEXT: s_waitcnt lgkmcnt(0)
23 ; GCN-NEXT: v_mov_b32_e32 v2, s4
24 ; GCN-NEXT: flat_store_dword v[0:1], v2
26 %tid = tail call i32 @llvm.amdgcn.workitem.id.x()
27 %scalar = tail call i32 @llvm.amdgcn.readfirstlane(i32 %tid)
28 %idx = zext i32 %scalar to i64
29 %gep0 = getelementptr inbounds float, ptr addrspace(1) %0, i64 %idx
30 %val = load float, ptr addrspace(1) %gep0, align 4
31 %gep1 = getelementptr inbounds float, ptr addrspace(1) %1, i64 10
32 store float %val, ptr addrspace(1) %gep1, align 4