4376fbd793
Summary: We use this `dyn_ptr` argument in Clang/OpenMP to handle the `KernelLaunchEnvironment`. This is a per-kernel argument used to share some information. Currenetly, it's prepended to the argument list and we generate storage for it in the runtime. This is bad for a few reasons: 1. It changes the ABI by shifting user arguments 2. It cannot be trivially be left uninitialized if unused 3. The runtime must allocate its own memory for it This PR changes it to be appended instead. Additionally, space for this is always emitted. This means the OMPIRBuilder itself will provide the storage, we simply need to populate it in the runtime if it is used. This means that if it's unused we don't always pay the cost and it's easier for non-OpenMP users to ignore it. Backward compatibility is maintained by auto-upgrading the kernel arguments. In `libomptarget` we completely allocate a new buffer to store this in the new format. The plugins still need to respect the old ABI of the called device object, so we simply rotate it if it's the old version.
88 lines
6.0 KiB
C++
88 lines
6.0 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix HOST --check-prefix CHECK
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// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple x86_64-unknown-windows-gnu -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix HOST-COFF --check-prefix CHECK
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// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc
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// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s --check-prefix DEVICE --check-prefix CHECK
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// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -emit-pch -o %t
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// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -include-pch %t -o - | FileCheck %s --check-prefix DEVICE --check-prefix CHECK
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix SIMD-ONLY
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o -| FileCheck %s --check-prefix SIMD-ONLY
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -emit-pch -o %t
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -fopenmp-is-target-device -fopenmp-host-ir-file-path %t-ppc-host.bc -include-pch %t -verify -o - | FileCheck %s --check-prefix SIMD-ONLY
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// expected-no-diagnostics
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// SIMD-ONLY-NOT: {{__kmpc|__tgt}}
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#ifndef HEADER
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#define HEADER
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// HOST-DAG: @c = external global i32,
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// HOST-DAG: @c_decl_tgt_ref_ptr = weak global ptr @c
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// HOST-DAG: @[[D:.+]] = internal global i32 2
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// HOST-DAG: @[[D_PTR:.+]] = weak global ptr @[[D]]
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// DEVICE-NOT: @c =
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// DEVICE: @c_decl_tgt_ref_ptr = weak global ptr null
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// HOST: [[SIZES:@.+]] = private unnamed_addr constant [4 x i64] [i64 4, i64 4, i64 4, i64 0]
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// HOST: [[MAPTYPES:@.+]] = private unnamed_addr constant [4 x i64] [i64 35, i64 531, i64 531, i64 288]
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// HOST: @.offloading.entry_name{{.*}} = internal unnamed_addr constant [{{[0-9]+}} x i8] c"c_decl_tgt_ref_ptr\00"
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// HOST: @.offloading.entry.c_decl_tgt_ref_ptr = weak constant %struct.__tgt_offload_entry { i64 0, i16 1, i16 1, i32 1, ptr @c_decl_tgt_ref_ptr, ptr @.offloading.entry_name, i64 8, i64 0, ptr null }, section "llvm_offload_entries"
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// HOST-COFF: @.offloading.entry.{{.*}} = weak constant %struct.__tgt_offload_entry { {{.*}} }, section "llvm_offload_entries$OE"
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// DEVICE-NOT: internal unnamed_addr constant [{{[0-9]+}} x i8] c"c_{{.*}}_decl_tgt_ref_ptr\00"
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// HOST: @.offloading.entry_name{{.*}} = internal unnamed_addr constant [{{[0-9]+}} x i8] c"_{{.*}}d_{{.*}}_decl_tgt_ref_ptr\00"
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// HOST: @.offloading.entry.[[D_PTR]] = weak constant %struct.__tgt_offload_entry { i64 0, i16 1, i16 1, i32 1, ptr @[[D_PTR]], ptr @.offloading.entry_name.3, i64 8, i64 0, ptr null }, section "llvm_offload_entries"
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extern int c;
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#pragma omp declare target link(c)
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static int d = 2;
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#pragma omp declare target link(d)
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int maini1() {
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int a;
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#pragma omp target map(tofrom : a)
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{
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a = c;
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d++;
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}
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#pragma omp target
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#pragma omp teams
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c = a;
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return 0;
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}
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// DEVICE: define weak_odr protected void @__omp_offloading_{{.*}}_{{.*}}maini1{{.*}}_l44(ptr noundef nonnull align {{[0-9]+}} dereferenceable{{[^,]*}}
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// DEVICE: [[C_REF:%.+]] = load ptr, ptr @c_decl_tgt_ref_ptr,
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// DEVICE: [[C:%.+]] = load i32, ptr [[C_REF]],
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// DEVICE: store i32 [[C]], ptr %
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// HOST: define {{.*}}i32 @{{.*}}maini1{{.*}}()
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// HOST: [[BASEPTRS:%.+]] = alloca [4 x ptr],
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// HOST: [[PTRS:%.+]] = alloca [4 x ptr],
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// HOST: getelementptr inbounds [4 x ptr], ptr [[BASEPTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
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// HOST: getelementptr inbounds [4 x ptr], ptr [[PTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
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// HOST: [[BP1:%.+]] = getelementptr inbounds [4 x ptr], ptr [[BASEPTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 1
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// HOST: store ptr @c_decl_tgt_ref_ptr, ptr [[BP1]],
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// HOST: [[P1:%.+]] = getelementptr inbounds [4 x ptr], ptr [[PTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 1
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// HOST: store ptr @c, ptr [[P1]],
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// HOST: [[BP2:%.+]] = getelementptr inbounds [4 x ptr], ptr [[BASEPTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 2
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// HOST: store ptr @[[D_PTR]], ptr [[BP2]],
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// HOST: [[P2:%.+]] = getelementptr inbounds [4 x ptr], ptr [[PTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 2
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// HOST: store ptr @[[D]], ptr [[P2]],
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// HOST: [[BP0:%.+]] = getelementptr inbounds [4 x ptr], ptr [[BASEPTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
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// HOST: [[P0:%.+]] = getelementptr inbounds [4 x ptr], ptr [[PTRS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
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// HOST: call i32 @__tgt_target_kernel(ptr @{{.+}}, i64 -1, i32 -1, i32 0, ptr @.{{.+}}.region_id, ptr %{{.+}})
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// HOST: call void @__omp_offloading_{{.*}}_{{.*}}_{{.*}}maini1{{.*}}_l44(ptr %{{[^,]+}}, ptr null)
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// HOST: call i32 @__tgt_target_kernel(ptr @{{.+}}, i64 -1, i32 0, i32 0, ptr @.{{.+}}.region_id, ptr %{{.+}})
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// HOST: define internal void @__omp_offloading_{{.*}}_{{.*}}maini1{{.*}}_l44(ptr noundef nonnull align {{[0-9]+}} dereferenceable{{[^,]*}}, ptr {{.*}})
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// HOST: [[C:%.*]] = load i32, ptr @c,
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// HOST: store i32 [[C]], ptr %
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// CHECK: !{i32 1, !"c_decl_tgt_ref_ptr", i32 1, i32 {{[0-9]+}}}
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#endif // HEADER
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