07896d44a3
Summary: This PR changes the handling of the emitted kernels when targeting a CPU to be a pointer struct. The old handling emitted a standard function prototype, this necessitated a target specific ABI to call it because the signature differed with the number of arguments. Instead, this PR emits a void pointer to a naturally aligned struct, this is what APIs like `pthreads` assert. This allows us to remove all the complexity around launching host kernels and just pass the argument list.
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 noalias noundef %__context)
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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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