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1// RUN: %clang_cc1 "-triple" "nvptx-nvidia-cuda" -emit-llvm -fcuda-is-device -o - %s | FileCheck %s2 3#include "__clang_cuda_builtin_vars.h"4 5// CHECK: define{{.*}} void @_Z6kernelPi(ptr noundef %out)6__attribute__((global))7void kernel(int *out) {8 int i = 0;9 out[i++] = threadIdx.x; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.tid.x()10 out[i++] = threadIdx.y; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.tid.y()11 out[i++] = threadIdx.z; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.tid.z()12 13 out[i++] = blockIdx.x; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ctaid.x()14 out[i++] = blockIdx.y; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ctaid.y()15 out[i++] = blockIdx.z; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ctaid.z()16 17 out[i++] = blockDim.x; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ntid.x()18 out[i++] = blockDim.y; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ntid.y()19 out[i++] = blockDim.z; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.ntid.z()20 21 out[i++] = gridDim.x; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.nctaid.x()22 out[i++] = gridDim.y; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.nctaid.y()23 out[i++] = gridDim.z; // CHECK: call noundef{{.*}} i32 @llvm.nvvm.read.ptx.sreg.nctaid.z()24 25 out[i++] = warpSize; // CHECK: store i32 32,26 27 // CHECK: ret void28}29