shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 7 Packages Projects Releases Wiki Activity
llvm-project/clang/test/OpenMP/nvptx_parallel_for_codegen.cpp
Shilei Tian 10068cd654 [OpenMP] Introduce kernel environment 
This patch introduces per kernel environment. Previously, flags such as execution mode are set through global variables with name like `__kernel_name_exec_mode`. They are accessible on the host by reading the corresponding global variable, but not from the device. Besides, some assumptions, such as no nested parallelism, are not per kernel basis, preventing us applying per kernel optimization in the device runtime.

This is a combination and refinement of patch series D116908, D116909, and D116910.

Depend on D155886.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D142569
2023-07-26 13:35:14 -04:00

177 lines
10 KiB
C++
Raw Blame History

// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --include-generated-funcs --replace-value-regex "__omp_offloading_[0-9a-z]+_[0-9a-z]+" "reduction_size[.].+[.]" "pl_cond[.].+[.|,]" --prefix-filecheck-ir-name _
// 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-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -disable-llvm-optzns | FileCheck %s --check-prefix=CHECK
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
template<typename tx>
tx ftemplate(int n) {
tx b[10];
#pragma omp target
{
tx d = n;
#pragma omp parallel for
for(int i=0; i<10; i++) {
b[i] += d;
}
b[3] += 1;
}
return b[3];
}
int bar(int n){
int a = 0;
a += ftemplate<int>(n);
return a;
}
#endif
// CHECK-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13
// CHECK-SAME: (i64 noundef [[N:%.*]], ptr noundef nonnull align 4 dereferenceable(40) [[B:%.*]]) #[[ATTR0:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[N_ADDR:%.*]] = alloca i64, align 8
// CHECK-NEXT: [[B_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[CAPTURED_VARS_ADDRS:%.*]] = alloca [2 x ptr], align 8
// CHECK-NEXT: store i64 [[N]], ptr [[N_ADDR]], align 8
// CHECK-NEXT: store ptr [[B]], ptr [[B_ADDR]], align 8
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[B_ADDR]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = call i32 @__kmpc_target_init(ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_kernel_environment)
// CHECK-NEXT: [[EXEC_USER_CODE:%.*]] = icmp eq i32 [[TMP1]], -1
// CHECK-NEXT: br i1 [[EXEC_USER_CODE]], label [[USER_CODE_ENTRY:%.*]], label [[WORKER_EXIT:%.*]]
// CHECK: user_code.entry:
// CHECK-NEXT: [[D:%.*]] = call align 8 ptr @__kmpc_alloc_shared(i64 4)
// CHECK-NEXT: [[TMP2:%.*]] = call i32 @__kmpc_global_thread_num(ptr @[[GLOB1:[0-9]+]])
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[N_ADDR]], align 4
// CHECK-NEXT: store i32 [[TMP3]], ptr [[D]], align 4
// CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [2 x ptr], ptr [[CAPTURED_VARS_ADDRS]], i64 0, i64 0
// CHECK-NEXT: store ptr [[TMP0]], ptr [[TMP4]], align 8
// CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [2 x ptr], ptr [[CAPTURED_VARS_ADDRS]], i64 0, i64 1
// CHECK-NEXT: store ptr [[D]], ptr [[TMP5]], align 8
// CHECK-NEXT: call void @__kmpc_parallel_51(ptr @[[GLOB1]], i32 [[TMP2]], i32 1, i32 -1, i32 -1, ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_omp_outlined, ptr @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_omp_outlined_wrapper, ptr [[CAPTURED_VARS_ADDRS]], i64 2)
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i32], ptr [[TMP0]], i64 0, i64 3
// CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP6]], 1
// CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: call void @__kmpc_free_shared(ptr [[D]], i64 4)
// CHECK-NEXT: call void @__kmpc_target_deinit()
// CHECK-NEXT: ret void
// CHECK: worker.exit:
// CHECK-NEXT: ret void
//
//
// CHECK-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_omp_outlined
// CHECK-SAME: (ptr noalias noundef [[DOTGLOBAL_TID_:%.*]], ptr noalias noundef [[DOTBOUND_TID_:%.*]], ptr noundef nonnull align 4 dereferenceable(40) [[B:%.*]], ptr noundef nonnull align 4 dereferenceable(4) [[D:%.*]]) #[[ATTR2:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[DOTGLOBAL_TID__ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[DOTBOUND_TID__ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[B_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[D_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[DOTOMP_IV:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[TMP:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[DOTOMP_LB:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[DOTOMP_UB:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[DOTOMP_STRIDE:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[DOTOMP_IS_LAST:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[I:%.*]] = alloca i32, align 4
// CHECK-NEXT: store ptr [[DOTGLOBAL_TID_]], ptr [[DOTGLOBAL_TID__ADDR]], align 8
// CHECK-NEXT: store ptr [[DOTBOUND_TID_]], ptr [[DOTBOUND_TID__ADDR]], align 8
// CHECK-NEXT: store ptr [[B]], ptr [[B_ADDR]], align 8
// CHECK-NEXT: store ptr [[D]], ptr [[D_ADDR]], align 8
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[B_ADDR]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[D_ADDR]], align 8
// CHECK-NEXT: store i32 0, ptr [[DOTOMP_LB]], align 4
// CHECK-NEXT: store i32 9, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: store i32 1, ptr [[DOTOMP_STRIDE]], align 4
// CHECK-NEXT: store i32 0, ptr [[DOTOMP_IS_LAST]], align 4
// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[DOTGLOBAL_TID__ADDR]], align 8
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP2]], align 4
// CHECK-NEXT: call void @__kmpc_for_static_init_4(ptr @[[GLOB2:[0-9]+]], i32 [[TMP3]], i32 33, ptr [[DOTOMP_IS_LAST]], ptr [[DOTOMP_LB]], ptr [[DOTOMP_UB]], ptr [[DOTOMP_STRIDE]], i32 1, i32 1)
// CHECK-NEXT: br label [[OMP_DISPATCH_COND:%.*]]
// CHECK: omp.dispatch.cond:
// CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP4]], 9
// CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
// CHECK: cond.true:
// CHECK-NEXT: br label [[COND_END:%.*]]
// CHECK: cond.false:
// CHECK-NEXT: [[TMP5:%.*]] = load i32, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: br label [[COND_END]]
// CHECK: cond.end:
// CHECK-NEXT: [[COND:%.*]] = phi i32 [ 9, [[COND_TRUE]] ], [ [[TMP5]], [[COND_FALSE]] ]
// CHECK-NEXT: store i32 [[COND]], ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[DOTOMP_LB]], align 4
// CHECK-NEXT: store i32 [[TMP6]], ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: [[TMP8:%.*]] = load i32, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[TMP7]], [[TMP8]]
// CHECK-NEXT: br i1 [[CMP1]], label [[OMP_DISPATCH_BODY:%.*]], label [[OMP_DISPATCH_END:%.*]]
// CHECK: omp.dispatch.body:
// CHECK-NEXT: br label [[OMP_INNER_FOR_COND:%.*]]
// CHECK: omp.inner.for.cond:
// CHECK-NEXT: [[TMP9:%.*]] = load i32, ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: [[TMP10:%.*]] = load i32, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: [[CMP2:%.*]] = icmp sle i32 [[TMP9]], [[TMP10]]
// CHECK-NEXT: br i1 [[CMP2]], label [[OMP_INNER_FOR_BODY:%.*]], label [[OMP_INNER_FOR_END:%.*]]
// CHECK: omp.inner.for.body:
// CHECK-NEXT: [[TMP11:%.*]] = load i32, ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP11]], 1
// CHECK-NEXT: [[ADD:%.*]] = add nsw i32 0, [[MUL]]
// CHECK-NEXT: store i32 [[ADD]], ptr [[I]], align 4
// CHECK-NEXT: [[TMP12:%.*]] = load i32, ptr [[TMP1]], align 4
// CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[I]], align 4
// CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP13]] to i64
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i32], ptr [[TMP0]], i64 0, i64 [[IDXPROM]]
// CHECK-NEXT: [[TMP14:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[TMP14]], [[TMP12]]
// CHECK-NEXT: store i32 [[ADD3]], ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: br label [[OMP_BODY_CONTINUE:%.*]]
// CHECK: omp.body.continue:
// CHECK-NEXT: br label [[OMP_INNER_FOR_INC:%.*]]
// CHECK: omp.inner.for.inc:
// CHECK-NEXT: [[TMP15:%.*]] = load i32, ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: [[ADD4:%.*]] = add nsw i32 [[TMP15]], 1
// CHECK-NEXT: store i32 [[ADD4]], ptr [[DOTOMP_IV]], align 4
// CHECK-NEXT: br label [[OMP_INNER_FOR_COND]]
// CHECK: omp.inner.for.end:
// CHECK-NEXT: br label [[OMP_DISPATCH_INC:%.*]]
// CHECK: omp.dispatch.inc:
// CHECK-NEXT: [[TMP16:%.*]] = load i32, ptr [[DOTOMP_LB]], align 4
// CHECK-NEXT: [[TMP17:%.*]] = load i32, ptr [[DOTOMP_STRIDE]], align 4
// CHECK-NEXT: [[ADD5:%.*]] = add nsw i32 [[TMP16]], [[TMP17]]
// CHECK-NEXT: store i32 [[ADD5]], ptr [[DOTOMP_LB]], align 4
// CHECK-NEXT: [[TMP18:%.*]] = load i32, ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: [[TMP19:%.*]] = load i32, ptr [[DOTOMP_STRIDE]], align 4
// CHECK-NEXT: [[ADD6:%.*]] = add nsw i32 [[TMP18]], [[TMP19]]
// CHECK-NEXT: store i32 [[ADD6]], ptr [[DOTOMP_UB]], align 4
// CHECK-NEXT: br label [[OMP_DISPATCH_COND]]
// CHECK: omp.dispatch.end:
// CHECK-NEXT: call void @__kmpc_for_static_fini(ptr @[[GLOB2]], i32 [[TMP3]])
// CHECK-NEXT: ret void
//
//
// CHECK-LABEL: define {{[^@]+}}@{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_omp_outlined_wrapper
// CHECK-SAME: (i16 noundef zeroext [[TMP0:%.*]], i32 noundef [[TMP1:%.*]]) #[[ATTR4:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[DOTADDR:%.*]] = alloca i16, align 2
// CHECK-NEXT: [[DOTADDR1:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[DOTZERO_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[GLOBAL_ARGS:%.*]] = alloca ptr, align 8
// CHECK-NEXT: store i16 [[TMP0]], ptr [[DOTADDR]], align 2
// CHECK-NEXT: store i32 [[TMP1]], ptr [[DOTADDR1]], align 4
// CHECK-NEXT: store i32 0, ptr [[DOTZERO_ADDR]], align 4
// CHECK-NEXT: call void @__kmpc_get_shared_variables(ptr [[GLOBAL_ARGS]])
// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[GLOBAL_ARGS]], align 8
// CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds ptr, ptr [[TMP2]], i64 0
// CHECK-NEXT: [[TMP4:%.*]] = load ptr, ptr [[TMP3]], align 8
// CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds ptr, ptr [[TMP2]], i64 1
// CHECK-NEXT: [[TMP6:%.*]] = load ptr, ptr [[TMP5]], align 8
// CHECK-NEXT: call void @{{__omp_offloading_[0-9a-z]+_[0-9a-z]+}}__Z9ftemplateIiET_i_l13_omp_outlined(ptr [[DOTADDR1]], ptr [[DOTZERO_ADDR]], ptr [[TMP4]], ptr [[TMP6]]) #[[ATTR3:[0-9]+]]
// CHECK-NEXT: ret void
//
Reference in New Issue View Git Blame Copy Permalink