forked from OSchip/llvm-project
71 lines
3.0 KiB
Plaintext
71 lines
3.0 KiB
Plaintext
// 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: -backend-option -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
|