1 // Test for linking with CUDA's libdevice as outlined in 2 // http://llvm.org/docs/NVPTXUsage.html#linking-with-libdevice 3 // 4 // REQUIRES: nvptx-registered-target 5 // 6 // Prepare bitcode file to link with 7 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -emit-llvm-bc \ 8 // RUN: -disable-llvm-passes -o %t.bc %S/Inputs/device-code.ll 9 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -emit-llvm-bc \ 10 // RUN: -disable-llvm-passes -o %t-2.bc %S/Inputs/device-code-2.ll 11 // 12 // Make sure function in device-code gets linked in and internalized. 13 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ 14 // RUN: -mlink-cuda-bitcode %t.bc -emit-llvm \ 15 // RUN: -disable-llvm-passes -o - %s \ 16 // RUN: | FileCheck %s -check-prefix CHECK-IR 17 // 18 // Make sure we can link two bitcode files. 19 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ 20 // RUN: -mlink-cuda-bitcode %t.bc -mlink-cuda-bitcode %t-2.bc \ 21 // RUN: -emit-llvm -disable-llvm-passes -o - %s \ 22 // RUN: | FileCheck %s -check-prefix CHECK-IR -check-prefix CHECK-IR-2 23 // 24 // Make sure function in device-code gets linked but is not internalized 25 // without -fcuda-uses-libdevice 26 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ 27 // RUN: -mlink-bitcode-file %t.bc -emit-llvm \ 28 // RUN: -disable-llvm-passes -o - %s \ 29 // RUN: | FileCheck %s -check-prefix CHECK-IR-NLD 30 // 31 // Make sure NVVMReflect pass is enabled in NVPTX back-end. 32 // RUN: %clang_cc1 -triple nvptx-unknown-cuda -fcuda-is-device \ 33 // RUN: -mlink-cuda-bitcode %t.bc -S -o /dev/null %s \ 34 // RUN: -backend-option -debug-pass=Structure 2>&1 \ 35 // RUN: | FileCheck %s -check-prefix CHECK-REFLECT 36 37 #include "Inputs/cuda.h" 38 39 __device__ float device_mul_or_add(float a, float b); 40 extern "C" __device__ double __nv_sin(double x); 41 extern "C" __device__ double __nv_exp(double x); 42 43 // CHECK-IR-LABEL: define void @_Z26should_not_be_internalizedPf( 44 // CHECK-PTX-LABEL: .visible .func _Z26should_not_be_internalizedPf( 45 __device__ void should_not_be_internalized(float *data) {} 46 47 // Make sure kernel call has not been internalized. 48 // CHECK-IR-LABEL: define void @_Z6kernelPfS_ 49 // CHECK-PTX-LABEL: .visible .entry _Z6kernelPfS_( 50 __global__ __attribute__((used)) void kernel(float *out, float *in) { 51 *out = device_mul_or_add(in[0], in[1]); 52 *out += __nv_exp(__nv_sin(*out)); 53 should_not_be_internalized(out); 54 } 55 56 // Make sure device_mul_or_add() is present in IR, is internal and 57 // calls __nvvm_reflect(). 58 // CHECK-IR-LABEL: define internal float @_Z17device_mul_or_addff( 59 // CHECK-IR-NLD-LABEL: define float @_Z17device_mul_or_addff( 60 // CHECK-IR: call i32 @__nvvm_reflect 61 // CHECK-IR: ret float 62 63 // Make sure we've linked in and internalized only needed functions 64 // from the second bitcode file. 65 // CHECK-IR-2-LABEL: define internal double @__nv_sin 66 // CHECK-IR-2-LABEL: define internal double @__nv_exp 67 // CHECK-IR-2-NOT: double @__unused 68 69 // Verify that NVVMReflect pass is among the passes run by NVPTX back-end. 70 // CHECK-REFLECT: Replace occurrences of __nvvm_reflect() calls with 0/1 71
