| ; Simple bit of IR to mimic CUDA's libdevice. We want to be |
| ; able to link with it and we need to make sure all __nvvm_reflect |
| ; calls are eliminated by the time PTX has been produced. |
| |
| target triple = "nvptx-unknown-cuda" |
| |
| declare i32 @__nvvm_reflect(ptr) |
| |
| @"$str" = private addrspace(1) constant [8 x i8] c"USE_MUL\00" |
| |
| define void @unused_subfunc(float %a) { |
| ret void |
| } |
| |
| define void @used_subfunc(float %a) { |
| ret void |
| } |
| |
| define float @_Z17device_mul_or_addff(float %a, float %b) { |
| %reflect = call i32 @__nvvm_reflect(ptr addrspacecast (ptr addrspace(1) @"$str" to ptr)) |
| %cmp = icmp ne i32 %reflect, 0 |
| br i1 %cmp, label %use_mul, label %use_add |
| |
| use_mul: |
| %ret1 = fmul float %a, %b |
| br label %exit |
| |
| use_add: |
| %ret2 = fadd float %a, %b |
| br label %exit |
| |
| exit: |
| %ret = phi float [%ret1, %use_mul], [%ret2, %use_add] |
| |
| call void @used_subfunc(float %ret) |
| |
| ret float %ret |
| } |
