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llvm-project/clang/test/OpenMP/nvptx_target_teams_codegen.cpp
Johannes Doerfert c98699582a [OpenMP][NFC] Remove unused (always fixed) arguments 
There are various runtime calls in the device runtime with unused, or
always fixed, arguments. This is bad for all sorts of reasons. Clean up
two before as we match them in OpenMPOpt now.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D83268
2020-07-11 00:51:51 -05:00

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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, i16 0)
// 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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