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