43 lines · plain
1// REQUIRES: x86-registered-target2// REQUIRES: nvptx-registered-target3 4// RUN: %clang_cc1 -std=c++11 -fcuda-is-device -triple nvptx64-nvidia-cuda -emit-llvm -o - %s | FileCheck --check-prefix=DEVICE %s5// RUN: echo "GPU binary would be here" > %t6// 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 %s7 8struct surfaceReference {9 int desc;10};11 12template <typename T, int dim = 1>13struct __attribute__((device_builtin_surface_type)) surface : public surfaceReference {14};15 16// Partial specialization over `void`.17template<int dim>18struct __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 423// On the host side, they remain in the original type.24// HOST: @surf = internal global %struct.surface25// HOST: @0 = private unnamed_addr constant [5 x i8] c"surf\00"26surface<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.p1(ptr 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_globals38// Texture references need registering with correct arguments.39// HOST: call void @[[PREFIX]]RegisterSurface(ptr %0, ptr @surf, ptr @0, ptr @0, i32 2, i32 0)40 41// They also need annotating in metadata.42// DEVICE: !0 = !{ptr addrspace(1) @surf, !"surface", i32 1}43