[OPENMP][NVPTX] Add support for lightweight runtime.

If the target construct can be executed in SPMD mode + it is a loop
based directive with static scheduling, we can use lightweight runtime
support.

llvm-svn: 340953

1 files changed, 328 insertions, 0 deletions

diff --git a/clang/test/OpenMP/nvptx_SPMD_codegen.cpp b/clang/test/OpenMP/nvptx_SPMD_codegen.cpp
new file mode 100644
index 00000000000..615dc30bdc7
--- /dev/null
+++ b/clang/test/OpenMP/nvptx_SPMD_codegen.cpp
@@ -0,0 +1,328 @@
+// Test target codegen - host bc file has to be created first.
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx64-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple i386-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm-bc %s -o %t-x86-host.bc
+// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
+// RUN: %clang_cc1 -verify -fopenmp -fexceptions -fcxx-exceptions -x c++ -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
+// expected-no-diagnostics
+#ifndef HEADER
+#define HEADER
+
+// CHECK-NOT: @__omp_offloading_{{.+}}_exec_mode = weak constant i8 1
+// CHECK: @__omp_offloading_{{.+}}_l52_exec_mode = weak constant i8 1
+// CHECK-NOT: @__omp_offloading_{{.+}}_exec_mode = weak constant i8 1
+
+void foo() {
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target teams distribute parallel for simd
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for simd schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+int a;
+// CHECK: call void @__kmpc_kernel_init(
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target teams distribute parallel for lastprivate(a)
+  for (int i = 0; i < 10; ++i)
+    a = i;
+#pragma omp target teams distribute parallel for schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams distribute parallel for schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target teams
+#pragma omp distribute parallel for simd
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for simd schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target teams
+#pragma omp distribute parallel for
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target teams
+#pragma omp distribute parallel for schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp teams
+#pragma omp distribute parallel for schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target parallel for
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel for schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target parallel
+#pragma omp for simd
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target parallel
+#pragma omp for simd schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd ordered
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel
+#pragma omp for simd schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 0, i16 0)
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1, i16 {{.+}})
+#pragma omp target
+#pragma omp parallel for
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(static)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(static, 1)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(auto)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(runtime)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(dynamic)
+  for (int i = 0; i < 10; ++i)
+    ;
+#pragma omp target
+#pragma omp parallel for schedule(guided)
+  for (int i = 0; i < 10; ++i)
+    ;
+}
+
+#endif
+