7093e40641
- Changed CUDALaunchBounds arguments from integers to Expr* so they can be saved in AST for instantiation. - Added support for template instantiation of launch_bounds attrubute. - Moved evaluation of launch_bounds arguments to NVPTXTargetCodeGenInfo:: SetTargetAttributes() where it can be done after template instantiation. - Added a warning on negative launch_bounds arguments. - Amended test cases. Differential Revision: http://reviews.llvm.org/D8985 llvm-svn: 235452
82 lines
2.3 KiB
Plaintext
82 lines
2.3 KiB
Plaintext
// RUN: %clang_cc1 %s -triple nvptx-unknown-unknown -fcuda-is-device -emit-llvm -o - | FileCheck %s
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#include "Inputs/cuda.h"
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#define MAX_THREADS_PER_BLOCK 256
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#define MIN_BLOCKS_PER_MP 2
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// Test both max threads per block and Min cta per sm.
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extern "C" {
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__global__ void
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__launch_bounds__( MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP )
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Kernel1()
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{
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}
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}
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// CHECK: !{{[0-9]+}} = !{void ()* @Kernel1, !"maxntidx", i32 256}
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// CHECK: !{{[0-9]+}} = !{void ()* @Kernel1, !"minctasm", i32 2}
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// Test only max threads per block. Min cta per sm defaults to 0, and
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// CodeGen doesn't output a zero value for minctasm.
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extern "C" {
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__global__ void
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__launch_bounds__( MAX_THREADS_PER_BLOCK )
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Kernel2()
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{
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}
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}
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// CHECK: !{{[0-9]+}} = !{void ()* @Kernel2, !"maxntidx", i32 256}
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template <int max_threads_per_block>
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__global__ void
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__launch_bounds__(max_threads_per_block)
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Kernel3()
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{
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}
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template void Kernel3<MAX_THREADS_PER_BLOCK>();
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel3{{.*}}, !"maxntidx", i32 256}
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template <int max_threads_per_block, int min_blocks_per_mp>
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__global__ void
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__launch_bounds__(max_threads_per_block, min_blocks_per_mp)
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Kernel4()
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{
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}
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template void Kernel4<MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP>();
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel4{{.*}}, !"maxntidx", i32 256}
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel4{{.*}}, !"minctasm", i32 2}
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const int constint = 100;
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template <int max_threads_per_block, int min_blocks_per_mp>
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__global__ void
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__launch_bounds__(max_threads_per_block + constint,
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min_blocks_per_mp + max_threads_per_block)
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Kernel5()
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{
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}
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template void Kernel5<MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP>();
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel5{{.*}}, !"maxntidx", i32 356}
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel5{{.*}}, !"minctasm", i32 258}
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// Make sure we don't emit negative launch bounds values.
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__global__ void
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__launch_bounds__( -MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP )
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Kernel6()
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{
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}
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// CHECK-NOT: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel6{{.*}}, !"maxntidx",
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel6{{.*}}, !"minctasm",
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__global__ void
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__launch_bounds__( MAX_THREADS_PER_BLOCK, -MIN_BLOCKS_PER_MP )
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Kernel7()
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{
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}
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// CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel7{{.*}}, !"maxntidx",
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// CHECK-NOT: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel7{{.*}}, !"minctasm",
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