9ca5a6d3b5
Summary: If the variables must be globalized in OpenMP mode (local automatic variable, GPU compilation mode, the variable may escape its declaration context by the reference or by the pointer), it should not be considered as the NRVO candidate. Otherwise, incorrect the return value of the function might not be updated. Reviewers: jdoerfert Subscribers: yaxunl, guansong, sstefan1, cfe-commits, caomhin Tags: #clang Differential Revision: https://reviews.llvm.org/D80936
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
// Test target codegen - host bc file has to be created first.
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// 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
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// 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
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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struct S {
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int a;
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S() : a(1) {}
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};
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#pragma omp declare target
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void bar(S &);
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// CHECK-LABEL: foo
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S foo() {
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// CHECK: [[RETVAL:%.+]] = alloca %struct.S,
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S s;
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// CHECK: call void @{{.+}}bar{{.+}}(%struct.S* {{.*}}[[S_REF:%.+]])
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bar(s);
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// CHECK: [[DEST:%.+]] = bitcast %struct.S* [[RETVAL]] to i8*
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// CHECK: [[SOURCE:%.+]] = bitcast %struct.S* [[S_REF]] to i8*
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}[[DEST]], i8* {{.*}}[[SOURCE]], i64 4, i1 false)
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// CHECK: [[VAL:%.+]] = load %struct.S, %struct.S* [[RETVAL]],
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// CHECK: ret %struct.S [[VAL]]
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return s;
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}
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#pragma omp end declare target
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#endif
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