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llvm-project/clang/test/OpenMP/nvptx_target_teams_codegen.cpp

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// 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 --check-prefix CHECK --check-prefix CHECK-64
// 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 --check-prefix CHECK --check-prefix CHECK-32
// 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 --check-prefix CHECK --check-prefix CHECK-32
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
// Check that the execution mode of all 2 target regions is set to Generic Mode.
// CHECK-DAG: {{@__omp_offloading_.+l27}}_exec_mode = weak constant i8 1
// CHECK-DAG: {{@__omp_offloading_.+l32}}_exec_mode = weak constant i8 1
// CHECK-DAG: {{@__omp_offloading_.+l37}}_exec_mode = weak constant i8 0
template<typename tx>
tx ftemplate(int n) {
tx a = 0;
short aa = 0;
tx b[10];
#pragma omp target teams if(0)
{
b[2] += 1;
}
#pragma omp target teams if(1)
{
a = '1';
}
#pragma omp target teams if(n>40)
{
aa = 1;
}
#pragma omp target teams
{
#pragma omp parallel
#pragma omp parallel
aa = 1;
}
return a;
}
int bar(int n){
int a = 0;
a += ftemplate<char>(n);
return a;
}
// CHECK-NOT: define {{.*}}void {{@__omp_offloading_.+template.+l22}}_worker()
// CHECK-LABEL: define {{.*}}void {{@__omp_offloading_.+template.+l27}}_worker()
// CHECK-DAG: [[OMP_EXEC_STATUS:%.+]] = alloca i8,
// CHECK-DAG: [[OMP_WORK_FN:%.+]] = alloca i8*,
// CHECK: store i8* null, i8** [[OMP_WORK_FN]],
// CHECK: store i8 0, i8* [[OMP_EXEC_STATUS]],
// CHECK: br label {{%?}}[[AWAIT_WORK:.+]]
//
// CHECK: [[AWAIT_WORK]]
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: [[KPR:%.+]] = call i1 @__kmpc_kernel_parallel(i8** [[OMP_WORK_FN]])
// CHECK: [[KPRB:%.+]] = zext i1 [[KPR]] to i8
// store i8 [[KPRB]], i8* [[OMP_EXEC_STATUS]], align 1
// CHECK: [[WORK:%.+]] = load i8*, i8** [[OMP_WORK_FN]],
// CHECK: [[SHOULD_EXIT:%.+]] = icmp eq i8* [[WORK]], null
// CHECK: br i1 [[SHOULD_EXIT]], label {{%?}}[[EXIT:.+]], label {{%?}}[[SEL_WORKERS:.+]]
//
// CHECK: [[SEL_WORKERS]]
// CHECK: [[ST:%.+]] = load i8, i8* [[OMP_EXEC_STATUS]]
// CHECK: [[IS_ACTIVE:%.+]] = icmp ne i8 [[ST]], 0
// CHECK: br i1 [[IS_ACTIVE]], label {{%?}}[[EXEC_PARALLEL:.+]], label {{%?}}[[BAR_PARALLEL:.+]]
//
// CHECK: [[EXEC_PARALLEL]]
// CHECK: br label {{%?}}[[TERM_PARALLEL:.+]]
//
// CHECK: [[TERM_PARALLEL]]
// CHECK: call void @__kmpc_kernel_end_parallel()
// CHECK: br label {{%?}}[[BAR_PARALLEL]]
//
// CHECK: [[BAR_PARALLEL]]
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: br label {{%?}}[[AWAIT_WORK]]
//
// CHECK: [[EXIT]]
// CHECK: ret void
// CHECK: define {{.*}}void [[T1:@__omp_offloading_.+template.+l27]](i[[SZ:32|64]] [[A:%[^)]+]])
// CHECK: store i[[SZ]] [[A]], i[[SZ]]* [[A_ADDR:%.+]], align
// CHECK: [[CONV:%.+]] = bitcast i[[SZ]]* [[A_ADDR]] to i8*
// CHECK-DAG: [[TID:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
// CHECK-DAG: [[NTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[WS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK-DAG: [[TH_LIMIT:%.+]] = sub nuw i32 [[NTH]], [[WS]]
// CHECK: [[IS_WORKER:%.+]] = icmp ult i32 [[TID]], [[TH_LIMIT]]
// CHECK: br i1 [[IS_WORKER]], label {{%?}}[[WORKER:.+]], label {{%?}}[[CHECK_MASTER:.+]]
//
// CHECK: [[WORKER]]
// CHECK: {{call|invoke}} void [[T1]]_worker()
// CHECK: br label {{%?}}[[EXIT:.+]]
//
// CHECK: [[CHECK_MASTER]]
// CHECK-DAG: [[CMTID:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
// CHECK-DAG: [[CMNTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[CMWS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK: [[IS_MASTER:%.+]] = icmp eq i32 [[CMTID]],
// CHECK: br i1 [[IS_MASTER]], label {{%?}}[[MASTER:.+]], label {{%?}}[[EXIT]]
//
// CHECK: [[MASTER]]
// CHECK-DAG: [[MNTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[MWS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK: [[MTMP1:%.+]] = sub nuw i32 [[MNTH]], [[MWS]]
// CHECK: call void @__kmpc_kernel_init(i32 [[MTMP1]]
//
// CHECK-NOT: kmpc_fork_teams
// CHECK: [[A_VAL:%.+]] = load i8, i8* [[CONV]], align
// CHECK: [[ACP:%.+]] = bitcast i[[SZ]]* [[AC:%.+]] to i8*
// CHECK: store i8 [[A_VAL]], i8* [[ACP]], align
// CHECK: [[ACV:%.+]] = load i[[SZ]], i[[SZ]]* [[AC]], align
// CHECK: call void [[PARALLEL:@.+]](i32* %{{.+}}, i32* %{{.+}}, i[[SZ]] [[ACV]])
// CHECK: br label {{%?}}[[TERMINATE:.+]]
//
// CHECK: [[TERMINATE]]
// CHECK: call void @__kmpc_kernel_deinit(
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: br label {{%?}}[[EXIT]]
//
// CHECK: [[EXIT]]
// CHECK: ret void
// CHECK: define internal void [[PARALLEL]](i32* noalias %{{.+}}, i32* noalias %{{.+}}, i[[SZ]] [[A_VAL:%.+]])
// CHECK: [[A_ADDR:%.+]] = alloca i[[SZ]],
// CHECK: store i[[SZ]] [[A_VAL]], i[[SZ]]* [[A_ADDR]],
// CHECK: [[CONV:%.+]] = bitcast i[[SZ]]* [[A_ADDR]] to i8*
// CHECK: store i8 49, i8* [[CONV]],
// CHECK: ret void
// CHECK-LABEL: define {{.*}}void {{@__omp_offloading_.+template.+l32}}_worker()
// CHECK-DAG: [[OMP_EXEC_STATUS:%.+]] = alloca i8,
// CHECK-DAG: [[OMP_WORK_FN:%.+]] = alloca i8*,
// CHECK: store i8* null, i8** [[OMP_WORK_FN]],
// CHECK: store i8 0, i8* [[OMP_EXEC_STATUS]],
// CHECK: br label {{%?}}[[AWAIT_WORK:.+]]
//
// CHECK: [[AWAIT_WORK]]
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: [[KPR:%.+]] = call i1 @__kmpc_kernel_parallel(i8** [[OMP_WORK_FN]])
// CHECK: [[KPRB:%.+]] = zext i1 [[KPR]] to i8
// store i8 [[KPRB]], i8* [[OMP_EXEC_STATUS]], align 1
// CHECK: [[WORK:%.+]] = load i8*, i8** [[OMP_WORK_FN]],
// CHECK: [[SHOULD_EXIT:%.+]] = icmp eq i8* [[WORK]], null
// CHECK: br i1 [[SHOULD_EXIT]], label {{%?}}[[EXIT:.+]], label {{%?}}[[SEL_WORKERS:.+]]
//
// CHECK: [[SEL_WORKERS]]
// CHECK: [[ST:%.+]] = load i8, i8* [[OMP_EXEC_STATUS]]
// CHECK: [[IS_ACTIVE:%.+]] = icmp ne i8 [[ST]], 0
// CHECK: br i1 [[IS_ACTIVE]], label {{%?}}[[EXEC_PARALLEL:.+]], label {{%?}}[[BAR_PARALLEL:.+]]
//
// CHECK: [[EXEC_PARALLEL]]
// CHECK: br label {{%?}}[[TERM_PARALLEL:.+]]
//
// CHECK: [[TERM_PARALLEL]]
// CHECK: call void @__kmpc_kernel_end_parallel()
// CHECK: br label {{%?}}[[BAR_PARALLEL]]
//
// CHECK: [[BAR_PARALLEL]]
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: br label {{%?}}[[AWAIT_WORK]]
//
// CHECK: [[EXIT]]
// CHECK: ret void
// CHECK: define {{.*}}void [[T2:@__omp_offloading_.+template.+l32]](i[[SZ:32|64]] [[AA:%[^)]+]])
// CHECK: store i[[SZ]] [[AA]], i[[SZ]]* [[AA_ADDR:%.+]], align
// CHECK: [[CONV:%.+]] = bitcast i[[SZ]]* [[AA_ADDR]] to i16*
// CHECK-DAG: [[TID:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
// CHECK-DAG: [[NTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[WS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK-DAG: [[TH_LIMIT:%.+]] = sub nuw i32 [[NTH]], [[WS]]
// CHECK: [[IS_WORKER:%.+]] = icmp ult i32 [[TID]], [[TH_LIMIT]]
// CHECK: br i1 [[IS_WORKER]], label {{%?}}[[WORKER:.+]], label {{%?}}[[CHECK_MASTER:.+]]
//
// CHECK: [[WORKER]]
// CHECK: {{call|invoke}} void [[T2]]_worker()
// CHECK: br label {{%?}}[[EXIT:.+]]
//
// CHECK: [[CHECK_MASTER]]
// CHECK-DAG: [[CMTID:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.tid.x()
// CHECK-DAG: [[CMNTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[CMWS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK: [[IS_MASTER:%.+]] = icmp eq i32 [[CMTID]],
// CHECK: br i1 [[IS_MASTER]], label {{%?}}[[MASTER:.+]], label {{%?}}[[EXIT]]
//
// CHECK: [[MASTER]]
// CHECK-DAG: [[MNTH:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.ntid.x()
// CHECK-DAG: [[MWS:%.+]] = call i32 @llvm.nvvm.read.ptx.sreg.warpsize()
// CHECK: [[MTMP1:%.+]] = sub nuw i32 [[MNTH]], [[MWS]]
// CHECK: call void @__kmpc_kernel_init(i32 [[MTMP1]]
//
// CHECK-NOT: kmpc_fork_teams
// CHECK: [[AA_VAL:%.+]] = load i16, i16* [[CONV]], align
// CHECK: [[ACP:%.+]] = bitcast i[[SZ]]* [[AC:%.+]] to i16*
// CHECK: store i16 [[AA_VAL]], i16* [[ACP]], align
// CHECK: [[ACV:%.+]] = load i[[SZ]], i[[SZ]]* [[AC]], align
// CHECK: call void [[PARALLEL:@.+]](i32* %{{.+}}, i32* %{{.+}}, i[[SZ]] [[ACV]])
// CHECK: br label {{%?}}[[TERMINATE:.+]]
//
// CHECK: [[TERMINATE]]
// CHECK: call void @__kmpc_kernel_deinit(
// CHECK: call void @__kmpc_barrier_simple_spmd(%struct.ident_t* null, i32 0)
// CHECK: br label {{%?}}[[EXIT]]
//
// CHECK: [[EXIT]]
// CHECK: ret void
// CHECK: define internal void [[PARALLEL]](i32* noalias %{{.+}}, i32* noalias %{{.+}}, i[[SZ]] [[A_VAL:%.+]])
// CHECK: [[A_ADDR:%.+]] = alloca i[[SZ]],
// CHECK: store i[[SZ]] [[A_VAL]], i[[SZ]]* [[A_ADDR]],
// CHECK: [[CONV:%.+]] = bitcast i[[SZ]]* [[A_ADDR]] to i16*
// CHECK: store i16 1, i16* [[CONV]],
// CHECK: ret void
// CHECK: define weak void @__omp_offloading_{{.*}}ftemplate{{.*}}_l37(
// CHECK: call void @__kmpc_spmd_kernel_init(i32 {{.+}}, i16 1)
// CHECK: call void @__kmpc_data_sharing_init_stack_spmd
// CHECK-NOT: call i8* @__kmpc_data_sharing_push_stack(
// CHECK-NOT: call void @__kmpc_serialized_parallel(
// CHECK: call void [[L0:@.+]](i32* %{{.+}}, i32* %{{.+}}, i[[SZ]] %{{.+}})
// CHECK-NOT: call void @__kmpc_end_serialized_parallel(
// CHECK-NOT: call void @__kmpc_data_sharing_pop_stack(
// CHECK: call void @__kmpc_spmd_kernel_deinit_v2(i16 1)
// CHECK: ret
// CHECK: define internal void [[L0]](i32* noalias %{{.+}}, i32* noalias %{{.+}}, i[[SZ]] %{{.+}})
// CHECK: call void [[L1:@.+]](i32* %{{.+}}, i32* %{{.+}}, i16* %{{.+}})
// CHECK: ret void
// CHECK: define internal void [[L1]](i32* noalias %{{.+}}, i32* noalias %{{.+}}, i16* nonnull align {{[0-9]+}} dereferenceable
// CHECK: call void @__kmpc_serialized_parallel(
// CHECK: call void [[L2:@.+]](i32* %{{.+}}, i32* %{{.+}}, i16* %{{.+}})
// CHECK: call void @__kmpc_end_serialized_parallel(
// CHECK: ret void
// CHECK: define internal void [[L2]](i32* noalias %{{.+}}, i32* noalias %{{.+}}, i16* nonnull align {{[0-9]+}} dereferenceable
// CHECK: store i16 1, i16* %
// CHECK: ret void
#endif
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