1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGenCUDA/cuda-builtin-vars.cu b/test/CodeGenCUDA/cuda-builtin-vars.cu
new file mode 100644
index 000000000000..834e16d04d67
--- /dev/null
+++ b/test/CodeGenCUDA/cuda-builtin-vars.cu
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 "-triple" "nvptx-nvidia-cuda" -emit-llvm -fcuda-is-device -o - %s | FileCheck %s
+
+#include "cuda_builtin_vars.h"
+
+// CHECK: define void @_Z6kernelPi(i32* %out)
+__attribute__((global))
+void kernel(int *out) {
+  int i = 0;
+  out[i++] = threadIdx.x; // CHECK: call i32 @llvm.ptx.read.tid.x()
+  out[i++] = threadIdx.y; // CHECK: call i32 @llvm.ptx.read.tid.y()
+  out[i++] = threadIdx.z; // CHECK: call i32 @llvm.ptx.read.tid.z()
+
+  out[i++] = blockIdx.x; // CHECK: call i32 @llvm.ptx.read.ctaid.x()
+  out[i++] = blockIdx.y; // CHECK: call i32 @llvm.ptx.read.ctaid.y()
+  out[i++] = blockIdx.z; // CHECK: call i32 @llvm.ptx.read.ctaid.z()
+
+  out[i++] = blockDim.x; // CHECK: call i32 @llvm.ptx.read.ntid.x()
+  out[i++] = blockDim.y; // CHECK: call i32 @llvm.ptx.read.ntid.y()
+  out[i++] = blockDim.z; // CHECK: call i32 @llvm.ptx.read.ntid.z()
+
+  out[i++] = gridDim.x; // CHECK: call i32 @llvm.ptx.read.nctaid.x()
+  out[i++] = gridDim.y; // CHECK: call i32 @llvm.ptx.read.nctaid.y()
+  out[i++] = gridDim.z; // CHECK: call i32 @llvm.ptx.read.nctaid.z()
+
+  out[i++] = warpSize; // CHECK: store i32 32,
+
+  // CHECK: ret void
+}