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// 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 <{ ptr, 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{{[^,]*}}, ptr noundef byval(%struct.S) align 8{{[^,]*}}, ptr
__global__ void kernel(char a, S s, int *b) {}
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