| // New CUDA kernel launch sequence does not require explicit specification of |
| // size/offset for each argument, so only the old way is tested. |
| // |
| // RUN: %clang_cc1 --std=c++11 -triple x86_64-unknown-linux-gnu -emit-llvm \ |
| // RUN: -target-sdk-version=8.0 -o - %s \ |
| // RUN: | FileCheck -check-prefixes=HOST-OLD,CHECK %s |
| |
| // RUN: %clang_cc1 --std=c++11 -fcuda-is-device -triple nvptx64-nvidia-cuda \ |
| // RUN: -emit-llvm -o - %s | FileCheck -check-prefixes=DEVICE,CHECK %s |
| |
| #include "Inputs/cuda.h" |
| |
| struct U { |
| short x; |
| } __attribute__((packed)); |
| |
| struct S { |
| int *ptr; |
| char a; |
| U u; |
| }; |
| |
| // Clang should generate a packed LLVM struct for S (denoted by the <>s), |
| // otherwise this test isn't interesting. |
| // CHECK: %struct.S = type <{ i32*, i8, %struct.U, [5 x i8] }> |
| |
| static_assert(alignof(S) == 8, "Unexpected alignment."); |
| |
| // HOST-LABEL: @_Z6kernelc1SPi |
| // Marshalled kernel args should be: |
| // 1. offset 0, width 1 |
| // 2. offset 8 (because alignof(S) == 8), width 16 |
| // 3. offset 24, width 8 |
| // HOST-OLD: call i32 @cudaSetupArgument({{[^,]*}}, i64 1, i64 0) |
| // HOST-OLD: call i32 @cudaSetupArgument({{[^,]*}}, i64 16, i64 8) |
| // HOST-OLD: call i32 @cudaSetupArgument({{[^,]*}}, i64 8, i64 24) |
| |
| // DEVICE-LABEL: @_Z6kernelc1SPi |
| // DEVICE-SAME: i8{{[^,]*}}, %struct.S* byval(%struct.S) align 8{{[^,]*}}, i32* |
| __global__ void kernel(char a, S s, int *b) {} |