1 // REQUIRES: x86-registered-target 2 // REQUIRES: nvptx-registered-target 3 4 // RUN: %clang_cc1 -std=c++11 -fcuda-is-device -triple nvptx64-nvidia-cuda -emit-llvm -o - %s | FileCheck --check-prefix=DEVICE %s 5 // RUN: echo "GPU binary would be here" > %t 6 // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-linux-gnu -target-sdk-version=8.0 -fcuda-include-gpubinary %t -emit-llvm -o - %s | FileCheck --check-prefix=HOST %s 7 8 struct surfaceReference { 9 int desc; 10 }; 11 12 template <typename T, int dim = 1> 13 struct __attribute__((device_builtin_surface_type)) surface : public surfaceReference { 14 }; 15 16 // Partial specialization over `void`. 17 template<int dim> 18 struct __attribute__((device_builtin_surface_type)) surface<void, dim> : public surfaceReference { 19 }; 20 21 // On the device side, surface references are represented as `i64` handles. 22 // DEVICE: @surf ={{.*}} addrspace(1) externally_initialized global i64 undef, align 4 23 // On the host side, they remain in the original type. 24 // HOST: @surf = internal global %struct.surface 25 // HOST: @0 = private unnamed_addr constant [5 x i8] c"surf\00" 26 surface<void, 2> surf; 27 28 __attribute__((device)) int suld_2d_zero(surface<void, 2>, int, int) asm("llvm.nvvm.suld.2d.i32.zero"); 29 30 // DEVICE-LABEL: i32 @_Z3fooii(i32 noundef %x, i32 noundef %y) 31 // DEVICE: call i64 @llvm.nvvm.texsurf.handle.internal.p1i64(i64 addrspace(1)* @surf) 32 // DEVICE: call noundef i32 @llvm.nvvm.suld.2d.i32.zero(i64 %{{.*}}, i32 noundef %{{.*}}, i32 noundef %{{.*}}) 33 __attribute__((device)) int foo(int x, int y) { 34 return suld_2d_zero(surf, x, y); 35 } 36 37 // HOST: define internal void @[[PREFIX:__cuda]]_register_globals 38 // Texture references need registering with correct arguments. 39 // HOST: call void @[[PREFIX]]RegisterSurface(i8** %0, i8*{{.*}}({{.*}}@surf{{.*}}), i8*{{.*}}({{.*}}@0{{.*}}), i8*{{.*}}({{.*}}@0{{.*}}), i32 2, i32 0) 40 41 // They also need annotating in metadata. 42 // DEVICE: !0 = !{i64 addrspace(1)* @surf, !"surface", i32 1} 43