1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s
3 ; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s
5 ; Callee must preserve the VGPR modified by writelane even if it is marked Caller-saved.
7 declare i32 @llvm.amdgcn.writelane(i32, i32, i32)
9 define void @sgpr_spill_writelane() {
10 ; GCN-LABEL: sgpr_spill_writelane:
12 ; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
13 ; GCN-NEXT: s_xor_saveexec_b64 s[4:5], -1
14 ; GCN-NEXT: buffer_store_dword v0, off, s[0:3], s32 ; 4-byte Folded Spill
15 ; GCN-NEXT: s_mov_b64 exec, s[4:5]
16 ; GCN-NEXT: v_writelane_b32 v0, s35, 0
17 ; GCN-NEXT: ;;#ASMSTART
19 ; GCN-NEXT: v_readlane_b32 s35, v0, 0
20 ; GCN-NEXT: s_xor_saveexec_b64 s[4:5], -1
21 ; GCN-NEXT: buffer_load_dword v0, off, s[0:3], s32 ; 4-byte Folded Reload
22 ; GCN-NEXT: s_mov_b64 exec, s[4:5]
23 ; GCN-NEXT: s_waitcnt vmcnt(0)
24 ; GCN-NEXT: s_setpc_b64 s[30:31]
25 call void asm sideeffect "", "~{s35}"()
29 define void @device_writelane_intrinsic(ptr addrspace(1) %out, i32 %src) {
30 ; GCN-LABEL: device_writelane_intrinsic:
32 ; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
33 ; GCN-NEXT: v_mov_b32_e32 v3, 15
34 ; GCN-NEXT: v_readfirstlane_b32 s4, v2
35 ; GCN-NEXT: v_writelane_b32 v3, s4, 23
36 ; GCN-NEXT: global_store_dword v[0:1], v3, off
37 ; GCN-NEXT: s_waitcnt vmcnt(0)
38 ; GCN-NEXT: s_setpc_b64 s[30:31]
39 %writelane = call i32 @llvm.amdgcn.writelane(i32 %src, i32 23, i32 15)
40 store i32 %writelane, ptr addrspace(1) %out, align 4
44 define amdgpu_kernel void @kernel_writelane_intrinsic(ptr addrspace(1) %out, i32 %src0, i32 %src1) {
45 ; GCN-LABEL: kernel_writelane_intrinsic:
47 ; GCN-NEXT: s_load_dwordx4 s[0:3], s[4:5], 0x0
48 ; GCN-NEXT: v_mov_b32_e32 v1, 45
49 ; GCN-NEXT: v_mov_b32_e32 v0, 0
50 ; GCN-NEXT: s_waitcnt lgkmcnt(0)
51 ; GCN-NEXT: s_mov_b32 m0, s3
52 ; GCN-NEXT: v_writelane_b32 v1, s2, m0
53 ; GCN-NEXT: global_store_dword v0, v1, s[0:1]
55 %writelane = call i32 @llvm.amdgcn.writelane(i32 %src0, i32 %src1, i32 45)
56 store i32 %writelane, ptr addrspace(1) %out, align 4