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