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d77c62053c
Summary: Byval requires allocating additional stack space, and always requires an implicit copy to be inserted in codegen, where it can be difficult to optimize. In this work, we use byref/IndirectAliased promotion method instead of byval with the implicit copy semantics. Reviewers: arsenm Differential Revision: https://reviews.llvm.org/D155986
41 lines
1.6 KiB
Plaintext
41 lines
1.6 KiB
Plaintext
// RUN: %clang_cc1 -x hip -triple amdgcn-amd-amdhsa -fcuda-is-device \
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// RUN: -emit-llvm %s -o - | FileCheck -check-prefix=AMDGCN %s
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// RUN: %clang_cc1 -x cuda -triple nvptx64-nvidia-cuda- -fcuda-is-device \
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// RUN: -emit-llvm %s -o - | FileCheck -check-prefix=NVPTX %s
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#include "Inputs/cuda.h"
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struct A {
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int a[32];
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float *p;
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};
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// AMDGCN: define{{.*}} amdgpu_kernel void @_Z6kernel1A(ptr addrspace(4) noundef byref(%struct.A) align 8 %{{.+}})
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// NVPTX: define{{.*}} void @_Z6kernel1A(ptr noundef byval(%struct.A) align 8 %x)
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__global__ void kernel(A x) {
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}
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class Kernel {
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public:
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// AMDGCN: define{{.*}} amdgpu_kernel void @_ZN6Kernel12memberKernelE1A(ptr addrspace(4) noundef byref(%struct.A) align 8 %{{.+}})
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// NVPTX: define{{.*}} void @_ZN6Kernel12memberKernelE1A(ptr noundef byval(%struct.A) align 8 %x)
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static __global__ void memberKernel(A x){}
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template<typename T> static __global__ void templateMemberKernel(T x) {}
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};
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template <typename T>
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__global__ void templateKernel(T x) {}
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void launch(void*);
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void test() {
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Kernel K;
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// AMDGCN: define{{.*}} amdgpu_kernel void @_Z14templateKernelI1AEvT_(ptr addrspace(4) noundef byref(%struct.A) align 8 %{{.+}}
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// NVPTX: define{{.*}} void @_Z14templateKernelI1AEvT_(ptr noundef byval(%struct.A) align 8 %x)
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launch((void*)templateKernel<A>);
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// AMDGCN: define{{.*}} amdgpu_kernel void @_ZN6Kernel20templateMemberKernelI1AEEvT_(ptr addrspace(4) noundef byref(%struct.A) align 8 %{{.+}}
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// NVPTX: define{{.*}} void @_ZN6Kernel20templateMemberKernelI1AEEvT_(ptr noundef byval(%struct.A) align 8 %x)
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launch((void*)Kernel::templateMemberKernel<A>);
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}
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