| // Test for linking with CUDA's libdevice as outlined in |
| // http://llvm.org/docs/NVPTXUsage.html#linking-with-libdevice |
| // |
| // REQUIRES: nvptx-registered-target |
| // |
| // Prepare bitcode file to link with |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -emit-llvm-bc \ |
| // RUN: -disable-llvm-passes -o %t.bc %S/Inputs/device-code.ll |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -emit-llvm-bc \ |
| // RUN: -disable-llvm-passes -o %t-2.bc %S/Inputs/device-code-2.ll |
| // |
| // Make sure function in device-code gets linked in and internalized. |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ |
| // RUN: -mlink-cuda-bitcode %t.bc -emit-llvm \ |
| // RUN: -disable-llvm-passes -o - %s \ |
| // RUN: | FileCheck %s -check-prefix CHECK-IR |
| // |
| // Make sure we can link two bitcode files. |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ |
| // RUN: -mlink-cuda-bitcode %t.bc -mlink-cuda-bitcode %t-2.bc \ |
| // RUN: -emit-llvm -disable-llvm-passes -o - %s \ |
| // RUN: | FileCheck %s -check-prefix CHECK-IR -check-prefix CHECK-IR-2 |
| // |
| // Make sure function in device-code gets linked but is not internalized |
| // without -fcuda-uses-libdevice |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ |
| // RUN: -mlink-bitcode-file %t.bc -emit-llvm \ |
| // RUN: -disable-llvm-passes -o - %s \ |
| // RUN: | FileCheck %s -check-prefix CHECK-IR-NLD |
| // |
| // Make sure NVVMReflect pass is enabled in NVPTX back-end. |
| // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ |
| // RUN: -mlink-cuda-bitcode %t.bc -S -o /dev/null %s \ |
| // RUN: -mllvm -debug-pass=Structure 2>&1 \ |
| // RUN: | FileCheck %s -check-prefix CHECK-REFLECT |
| |
| #include "Inputs/cuda.h" |
| |
| __device__ float device_mul_or_add(float a, float b); |
| extern "C" __device__ double __nv_sin(double x); |
| extern "C" __device__ double __nv_exp(double x); |
| |
| // CHECK-IR-LABEL: define void @_Z26should_not_be_internalizedPf( |
| // CHECK-PTX-LABEL: .visible .func _Z26should_not_be_internalizedPf( |
| __device__ void should_not_be_internalized(float *data) {} |
| |
| // Make sure kernel call has not been internalized. |
| // CHECK-IR-LABEL: define void @_Z6kernelPfS_ |
| // CHECK-PTX-LABEL: .visible .entry _Z6kernelPfS_( |
| __global__ __attribute__((used)) void kernel(float *out, float *in) { |
| *out = device_mul_or_add(in[0], in[1]); |
| *out += __nv_exp(__nv_sin(*out)); |
| should_not_be_internalized(out); |
| } |
| |
| // Make sure device_mul_or_add() is present in IR, is internal and |
| // calls __nvvm_reflect(). |
| // CHECK-IR-LABEL: define internal float @_Z17device_mul_or_addff( |
| // CHECK-IR-NLD-LABEL: define float @_Z17device_mul_or_addff( |
| // CHECK-IR: call i32 @__nvvm_reflect |
| // CHECK-IR: ret float |
| |
| // Make sure we've linked in and internalized only needed functions |
| // from the second bitcode file. |
| // CHECK-IR-2-LABEL: define internal double @__nv_sin |
| // CHECK-IR-2-LABEL: define internal double @__nv_exp |
| // CHECK-IR-2-NOT: double @__unused |
| |
| // Verify that NVVMReflect pass is among the passes run by NVPTX back-end. |
| // CHECK-REFLECT: Replace occurrences of __nvvm_reflect() calls with 0/1 |
