| // Check that when we link a bitcode module into a file using |
| // -mlink-cuda-bitcode, we apply the same attributes to the functions in that |
| // bitcode module as we apply to functions we generate. |
| // |
| // In particular, we check that ftz and unsafe-math are propagated into the |
| // bitcode library as appropriate. |
| // |
| // In addition, we set -ftrapping-math on the bitcode library, but then set |
| // -fno-trapping-math on the main compilations, and ensure that the latter flag |
| // overrides the flag on the bitcode library. |
| |
| // Build the bitcode library. This is not built in CUDA mode, otherwise it |
| // might have incompatible attributes. This mirrors how libdevice is built. |
| // RUN: %clang_cc1 -x c++ -emit-llvm-bc -ftrapping-math -DLIB \ |
| // RUN: %s -o %t.bc -triple nvptx-unknown-unknown |
| |
| // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-cuda-bitcode %t.bc -o - \ |
| // RUN: -fno-trapping-math -fcuda-is-device -triple nvptx-unknown-unknown \ |
| // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=NOFTZ --check-prefix=NOFAST |
| |
| // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-cuda-bitcode %t.bc \ |
| // RUN: -fno-trapping-math -fcuda-flush-denormals-to-zero -o - \ |
| // RUN: -fcuda-is-device -triple nvptx-unknown-unknown \ |
| // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=FTZ \ |
| // RUN: --check-prefix=NOFAST |
| |
| // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-cuda-bitcode %t.bc \ |
| // RUN: -fno-trapping-math -fcuda-flush-denormals-to-zero -o - \ |
| // RUN: -fcuda-is-device -menable-unsafe-fp-math -triple nvptx-unknown-unknown \ |
| // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=FAST |
| |
| // Wrap everything in extern "C" so we don't have to worry about name mangling |
| // in the IR. |
| extern "C" { |
| #ifdef LIB |
| |
| // This function is defined in the library and only declared in the main |
| // compilation. |
| void lib_fn() {} |
| |
| #else |
| |
| #include "Inputs/cuda.h" |
| __device__ void lib_fn(); |
| __global__ void kernel() { lib_fn(); } |
| |
| #endif |
| } |
| |
| // The kernel and lib function should have the same attributes. |
| // CHECK: define void @kernel() [[attr:#[0-9]+]] |
| // CHECK: define internal void @lib_fn() [[attr]] |
| |
| // Check the attribute list. |
| // CHECK: attributes [[attr]] = { |
| // CHECK: "no-trapping-math"="true" |
| |
| // FTZ-SAME: "nvptx-f32ftz"="true" |
| // NOFTZ-NOT: "nvptx-f32ftz"="true" |
| |
| // FAST-SAME: "unsafe-fp-math"="true" |
| // NOFAST-NOT: "unsafe-fp-math"="true" |
