0a17bdfc36
This patch simplifies the representation of OpenMP loop wrapper operations by introducing the `NoTerminator` trait and updating accordingly the verifier for the `LoopWrapperInterface`. Since loop wrappers are already limited to having exactly one region containing exactly one block, and this block can only hold a single `omp.loop_nest` or loop wrapper and an `omp.terminator` that does not return any values, it makes sense to simplify the representation of loop wrappers by removing the terminator. There is an extensive list of Lit tests that needed updating to remove the `omp.terminator`s adding some noise to this patch, but actual changes are limited to the definition of the `omp.wsloop`, `omp.simd`, `omp.distribute` and `omp.taskloop` loop wrapper ops, Flang lowering for those, `LoopWrapperInterface::verifyImpl()`, SCF to OpenMP conversion and OpenMP dialect documentation.
52 lines
3.0 KiB
MLIR
52 lines
3.0 KiB
MLIR
// RUN: mlir-translate -mlir-to-llvmir %s | FileCheck %s
|
|
|
|
// The aim of the test is to check the GPU LLVM IR codegen
|
|
// for nested omp do loop inside omp target region
|
|
|
|
module attributes {dlti.dl_spec = #dlti.dl_spec<#dlti.dl_entry<"dlti.alloca_memory_space", 5 : ui32>>, llvm.data_layout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8", llvm.target_triple = "amdgcn-amd-amdhsa", omp.is_gpu = true, omp.is_target_device = true } {
|
|
llvm.func @target_wsloop(%arg0: !llvm.ptr ) attributes {omp.declare_target = #omp.declaretarget<device_type = (any), capture_clause = (to)>} {
|
|
%loop_ub = llvm.mlir.constant(9 : i32) : i32
|
|
%loop_lb = llvm.mlir.constant(0 : i32) : i32
|
|
%loop_step = llvm.mlir.constant(1 : i32) : i32
|
|
omp.wsloop {
|
|
omp.loop_nest (%loop_cnt) : i32 = (%loop_lb) to (%loop_ub) inclusive step (%loop_step) {
|
|
%gep = llvm.getelementptr %arg0[0, %loop_cnt] : (!llvm.ptr, i32) -> !llvm.ptr, !llvm.array<10 x i32>
|
|
llvm.store %loop_cnt, %gep : i32, !llvm.ptr
|
|
omp.yield
|
|
}
|
|
}
|
|
llvm.return
|
|
}
|
|
|
|
llvm.func @target_empty_wsloop() attributes {omp.declare_target = #omp.declaretarget<device_type = (any), capture_clause = (to)>} {
|
|
%loop_ub = llvm.mlir.constant(9 : i32) : i32
|
|
%loop_lb = llvm.mlir.constant(0 : i32) : i32
|
|
%loop_step = llvm.mlir.constant(1 : i32) : i32
|
|
omp.wsloop {
|
|
omp.loop_nest (%loop_cnt) : i32 = (%loop_lb) to (%loop_ub) inclusive step (%loop_step) {
|
|
omp.yield
|
|
}
|
|
}
|
|
llvm.return
|
|
}
|
|
}
|
|
|
|
// CHECK: define void @[[FUNC0:.*]](ptr %[[ARG0:.*]])
|
|
// CHECK: %[[STRUCTARG:.*]] = alloca { ptr }, align 8, addrspace(5)
|
|
// CHECK: %[[STRUCTARG_ASCAST:.*]] = addrspacecast ptr addrspace(5) %[[STRUCTARG]] to ptr
|
|
// CHECK: %[[GEP:.*]] = getelementptr { ptr }, ptr addrspace(5) %[[STRUCTARG]], i32 0, i32 0
|
|
// CHECK: store ptr %[[ARG0]], ptr addrspace(5) %[[GEP]], align 8
|
|
// CHECK: %[[NUM_THREADS:.*]] = call i32 @omp_get_num_threads()
|
|
// CHECK: call void @__kmpc_for_static_loop_4u(ptr addrspacecast (ptr addrspace(1) @[[GLOB1:[0-9]+]] to ptr), ptr @[[LOOP_BODY_FN:.*]], ptr %[[STRUCTARG_ASCAST]], i32 10, i32 %[[NUM_THREADS]], i32 0)
|
|
|
|
// CHECK: define internal void @[[LOOP_BODY_FN]](i32 %[[LOOP_CNT:.*]], ptr %[[LOOP_BODY_ARG:.*]])
|
|
// CHECK: %[[GEP2:.*]] = getelementptr { ptr }, ptr %[[LOOP_BODY_ARG]], i32 0, i32 0
|
|
// CHECK: %[[LOADGEP:.*]] = load ptr, ptr %[[GEP2]], align 8
|
|
// CHECK: %[[GEP3:.*]] = getelementptr [10 x i32], ptr %[[LOADGEP]], i32 0, i32 %[[TMP2:.*]]
|
|
// CHECK: store i32 %[[VAL0:.*]], ptr %[[GEP3]], align 4
|
|
|
|
// CHECK: define void @[[FUNC_EMPTY_WSLOOP:.*]]()
|
|
// CHECK: call void @__kmpc_for_static_loop_4u(ptr addrspacecast (ptr addrspace(1) @[[GLOB2:[0-9]+]] to ptr), ptr @[[LOOP_EMPTY_BODY_FN:.*]], ptr null, i32 10, i32 %[[NUM_THREADS:.*]], i32 0)
|
|
|
|
// CHECK: define internal void @[[LOOP_EMPTY_BODY_FN]](i32 %[[LOOP_CNT:.*]])
|