| ; RUN: llc -mtriple amdgcn-amdhsa -mcpu=fiji -amdgpu-scalarize-global-loads -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s |
| |
| declare i32 @llvm.amdgcn.workitem.id.x() |
| declare i32 @llvm.amdgcn.readfirstlane(i32) |
| |
| ; GCN-LABEL: readfirstlane_uniform |
| ; GCN: s_load_dwordx2 s{{\[}}[[IN_ADDR:[0-9]+]]:1{{\]}}, s[4:5], 0x0 |
| ; GCN: v_readfirstlane_b32 s[[SCALAR:[0-9]+]], v0 |
| ; GCN: s_add_u32 s[[LOAD_ADDR:[0-9]+]], s[[IN_ADDR]], s[[SCALAR]] |
| ; GCN: s_load_dword s{{[0-9]+}}, s{{\[}}[[LOAD_ADDR]] |
| |
| define amdgpu_kernel void @readfirstlane_uniform(float addrspace(1)* noalias nocapture readonly, float addrspace(1)* noalias nocapture readonly) { |
| %tid = tail call i32 @llvm.amdgcn.workitem.id.x() |
| %scalar = tail call i32 @llvm.amdgcn.readfirstlane(i32 %tid) |
| %idx = zext i32 %scalar to i64 |
| %gep0 = getelementptr inbounds float, float addrspace(1)* %0, i64 %idx |
| %val = load float, float addrspace(1)* %gep0, align 4 |
| %gep1 = getelementptr inbounds float, float addrspace(1)* %1, i64 10 |
| store float %val, float addrspace(1)* %gep1, align 4 |
| ret void |
| } |
