1 // RUN: %clang_cc1 %s -triple nvptx-unknown-unknown -fcuda-is-device -emit-llvm -o - | FileCheck %s 2 3 #include "Inputs/cuda.h" 4 5 #define MAX_THREADS_PER_BLOCK 256 6 #define MIN_BLOCKS_PER_MP 2 7 8 // Test both max threads per block and Min cta per sm. 9 extern "C" { 10 __global__ void 11 __launch_bounds__( MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP ) 12 Kernel1() 13 { 14 } 15 } 16 17 // CHECK: !{{[0-9]+}} = !{void ()* @Kernel1, !"maxntidx", i32 256} 18 // CHECK: !{{[0-9]+}} = !{void ()* @Kernel1, !"minctasm", i32 2} 19 20 // Test only max threads per block. Min cta per sm defaults to 0, and 21 // CodeGen doesn't output a zero value for minctasm. 22 extern "C" { 23 __global__ void 24 __launch_bounds__( MAX_THREADS_PER_BLOCK ) 25 Kernel2() 26 { 27 } 28 } 29 30 // CHECK: !{{[0-9]+}} = !{void ()* @Kernel2, !"maxntidx", i32 256} 31 32 template <int max_threads_per_block> 33 __global__ void 34 __launch_bounds__(max_threads_per_block) 35 Kernel3() 36 { 37 } 38 39 template void Kernel3<MAX_THREADS_PER_BLOCK>(); 40 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel3{{.*}}, !"maxntidx", i32 256} 41 42 template <int max_threads_per_block, int min_blocks_per_mp> 43 __global__ void 44 __launch_bounds__(max_threads_per_block, min_blocks_per_mp) 45 Kernel4() 46 { 47 } 48 template void Kernel4<MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP>(); 49 50 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel4{{.*}}, !"maxntidx", i32 256} 51 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel4{{.*}}, !"minctasm", i32 2} 52 53 const int constint = 100; 54 template <int max_threads_per_block, int min_blocks_per_mp> 55 __global__ void 56 __launch_bounds__(max_threads_per_block + constint, 57 min_blocks_per_mp + max_threads_per_block) 58 Kernel5() 59 { 60 } 61 template void Kernel5<MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP>(); 62 63 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel5{{.*}}, !"maxntidx", i32 356} 64 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel5{{.*}}, !"minctasm", i32 258} 65 66 // Make sure we don't emit negative launch bounds values. 67 __global__ void 68 __launch_bounds__( -MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP ) 69 Kernel6() 70 { 71 } 72 // CHECK-NOT: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel6{{.*}}, !"maxntidx", 73 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel6{{.*}}, !"minctasm", 74 75 __global__ void 76 __launch_bounds__( MAX_THREADS_PER_BLOCK, -MIN_BLOCKS_PER_MP ) 77 Kernel7() 78 { 79 } 80 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel7{{.*}}, !"maxntidx", 81 // CHECK-NOT: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel7{{.*}}, !"minctasm", 82 83 const char constchar = 12; 84 __global__ void __launch_bounds__(constint, constchar) Kernel8() {} 85 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel8{{.*}}, !"maxntidx", i32 100 86 // CHECK: !{{[0-9]+}} = !{void ()* @{{.*}}Kernel8{{.*}}, !"minctasm", i32 12 87
