52 lines
5.1 KiB
C
52 lines
5.1 KiB
C
// RUN: %clang_cc1 -verify=host -Rpass=openmp-opt -Rpass-analysis=openmp-opt -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 -Rpass=openmp-opt -Rpass-analysis=openmp-opt -fopenmp -O2 -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 %t.out
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// RUN: %clang_cc1 -fexperimental-new-pass-manager -verify -Rpass=openmp-opt -Rpass-analysis=openmp-opt -fopenmp -O2 -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 %t.out
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// host-no-diagnostics
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void baz(void) __attribute__((assume("omp_no_openmp")));
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void bar(void) {
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#pragma omp parallel // #1 \
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// expected-remark@#1 {{Found a parallel region that is called in a target region but not part of a combined target construct nor nested inside a target construct without intermediate code. This can lead to excessive register usage for unrelated target regions in the same translation unit due to spurious call edges assumed by ptxas.}} \
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// expected-remark@#1 {{Parallel region is used in unknown ways; will not attempt to rewrite the state machine.}}
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{
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}
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}
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void foo(void) {
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#pragma omp target teams // #2 \
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// expected-remark@#2 {{Generic-mode kernel is executed with a customized state machine [3 known parallel regions] (good).}}
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// expected-remark@#2 {{Target region containing the parallel region that is specialized. (parallel region ID: __omp_outlined__1_wrapper, kernel ID: __omp_offloading}} \
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// expected-remark@#2 {{Target region containing the parallel region that is specialized. (parallel region ID: __omp_outlined__2_wrapper, kernel ID: __omp_offloading}}
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{
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baz(); // expected-remark {{Kernel will be executed in generic-mode due to this potential side-effect, consider to add `__attribute__((assume("ompx_spmd_amenable")))` to the called function '_Z3bazv'.}}
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#pragma omp parallel // #3 \
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// expected-remark@#3 {{Found a parallel region that is called in a target region but not part of a combined target construct nor nested inside a target construct without intermediate code. This can lead to excessive register usage for unrelated target regions in the same translation unit due to spurious call edges assumed by ptxas.}} \
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// expected-remark@#3 {{Specialize parallel region that is only reached from a single target region to avoid spurious call edges and excessive register usage in other target regions. (parallel region ID: __omp_outlined__1_wrapper, kernel ID: __omp_offloading}}
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{
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}
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bar();
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#pragma omp parallel // #4 \
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// expected-remark@#4 {{Found a parallel region that is called in a target region but not part of a combined target construct nor nested inside a target construct without intermediate code. This can lead to excessive register usage for unrelated target regions in the same translation unit due to spurious call edges assumed by ptxas.}} \
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// expected-remark@#4 {{Specialize parallel region that is only reached from a single target region to avoid spurious call edges and excessive register usage in other target regions. (parallel region ID: __omp_outlined__2_wrapper, kernel ID: __omp_offloading}}
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{
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}
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}
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}
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void spmd(void) {
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// Verify we do not emit the remarks above for "SPMD" regions.
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#pragma omp target teams
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#pragma omp parallel
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{
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}
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#pragma omp target teams distribute parallel for
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for (int i = 0; i < 100; ++i) {
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}
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}
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// expected-remark@* {{OpenMP runtime call __kmpc_global_thread_num moved to beginning of OpenMP region}}
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// expected-remark@* {{OpenMP runtime call __kmpc_global_thread_num deduplicated}}
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