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 __launch_bounds__(MAX_THREADS_PER_BLOCK,MIN_BLOCKS_PER_MP)11__launch_bounds__( MAX_THREADS_PER_BLOCK, MIN_BLOCKS_PER_MP ) 12 Kernel1() 13 { 14 } 15 } 16 17 // CHECK: !{{[0-9]+}} = metadata !{void ()* @Kernel1, metadata !"maxntidx", i32 256} 18 // CHECK: !{{[0-9]+}} = metadata !{void ()* @Kernel1, metadata !"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 __launch_bounds__(MAX_THREADS_PER_BLOCK)24__launch_bounds__( MAX_THREADS_PER_BLOCK ) 25 Kernel2() 26 { 27 } 28 } 29 30 // CHECK: !{{[0-9]+}} = metadata !{void ()* @Kernel2, metadata !"maxntidx", i32 256} 31