diff options
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/madak.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/madak.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/madak.ll b/llvm/test/CodeGen/AMDGPU/madak.ll index a394db61bfb..6ea1202ac50 100644 --- a/llvm/test/CodeGen/AMDGPU/madak.ll +++ b/llvm/test/CodeGen/AMDGPU/madak.ll @@ -191,3 +191,32 @@ define void @no_madak_src1_modifier_f32(float addrspace(1)* noalias %out, float store float %madak, float addrspace(1)* %out.gep, align 4 ret void } + +; SIFoldOperands should not fold the SGPR copy into the instruction +; because the implicit immediate already uses the constant bus. +; GCN-LABEL: {{^}}madak_constant_bus_violation: +; GCN: s_load_dword [[SGPR0:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, {{0xa|0x28}} +; GCN: v_mov_b32_e32 [[SGPR0_VCOPY:v[0-9]+]], [[SGPR0]] +; GCN: buffer_load_dword [[VGPR:v[0-9]+]] +; GCN: v_madak_f32_e32 [[MADAK:v[0-9]+]], 0.5, [[SGPR0_VCOPY]], 0x42280000 +; GCN: v_mul_f32_e32 [[MUL:v[0-9]+]], [[VGPR]], [[MADAK]] +; GCN: buffer_store_dword [[MUL]] +define void @madak_constant_bus_violation(i32 %arg1, float %sgpr0, float %sgpr1) #0 { +bb: + %tmp = icmp eq i32 %arg1, 0 + br i1 %tmp, label %bb3, label %bb4 + +bb3: + store volatile float 0.0, float addrspace(1)* undef + br label %bb4 + +bb4: + %vgpr = load volatile float, float addrspace(1)* undef + %tmp0 = fmul float %sgpr0, 0.5 + %tmp1 = fadd float %tmp0, 42.0 + %tmp2 = fmul float %tmp1, %vgpr + store volatile float %tmp2, float addrspace(1)* undef, align 4 + ret void +} + +attributes #0 = { nounwind} |
