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llvm/clang/test/OpenMP/schedule_codegen.cpp
Graham Hunter c6a91ee6aa [Clang][OpenMP] Monotonic does not apply to SIMD 
The codegen for simd constructs was affected by the presence (or
absence) of the 'monotonic' schedule modifier for worksharing
loops. The modifier is only intended to apply to the scheduling of
chunks for a thread, not iterations of a loop inside a chunk.

In addition, the monotonic modifier was applied to worksharing loops
by default if no schedule clause was present; the referenced part of
the OpenMP 4.5 spec in the code (section 2.7.1) only applies if the
user specified a schedule clause with a static kind but no modifier.
Without a user-specified schedule clause we should default to
nonmonotonic scheduling.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D103793
2021-06-22 10:24:11 +01:00

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// RUN: %clang_cc1 -fopenmp -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-llvm -fexceptions -fcxx-exceptions -o - %s | FileCheck %s
// RUN: %clang_cc1 -fopenmp-simd -fopenmp-version=50 -x c++ -triple x86_64-unknown-unknown -emit-llvm -fexceptions -fcxx-exceptions -o - %s | FileCheck --check-prefix SIMD-ONLY0 %s
// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
int main() {
// CHECK: @__kmpc_for_static_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for simd
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for schedule(static)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for simd schedule(static)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for schedule(static, 2)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for simd schedule(static, 2)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(auto)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(auto)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(runtime)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(runtime)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for schedule(monotonic: static)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for simd schedule(monotonic: static)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for schedule(monotonic: static, 2)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_for_static_init
// CHECK: !llvm.access.group
// CHECK: @__kmpc_for_static_fini
#pragma omp for simd schedule(monotonic: static, 2)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
#pragma omp for schedule(monotonic: auto)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(monotonic: auto)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
#pragma omp for schedule(monotonic: runtime)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(monotonic: runtime)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
#pragma omp for schedule(monotonic: guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(monotonic: guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
#pragma omp for schedule(monotonic: dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(monotonic: dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(nonmonotonic: guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(nonmonotonic: guided)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for schedule(nonmonotonic: dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK: !llvm.access.group
#pragma omp for simd schedule(nonmonotonic: dynamic)
for(int i = 0; i < 10; ++i);
// CHECK: call void @__kmpc_for_static_init_4(%struct.ident_t* {{.+}}, i32 %{{.+}}, i32 1073741858,
// CHECK: !llvm.access.group
#pragma omp for simd schedule(nonmonotonic: static)
for(int i = 0; i < 10; ++i);
// CHECK: call void @__kmpc_dispatch_init_4(%struct.ident_t* {{.+}}, i32 %{{.+}}, i32 1073741862,
// CHECK: !llvm.access.group
#pragma omp for schedule(nonmonotonic: auto)
for(int i = 0; i < 10; ++i);
// CHECK: call void @__kmpc_dispatch_init_4(%struct.ident_t* {{.+}}, i32 %{{.+}}, i32 1073741861,
// CHECK: !llvm.access.group
#pragma omp for simd schedule(nonmonotonic: runtime)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(static) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for simd schedule(static) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(static, 2) ordered(1)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for simd schedule(static, 2) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(auto) ordered(1)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
#pragma omp for simd schedule(auto) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(runtime) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for simd schedule(runtime) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(guided) ordered(1)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for simd schedule(guided) ordered
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for schedule(dynamic) ordered(1)
for(int i = 0; i < 10; ++i);
// CHECK: @__kmpc_dispatch_init
// CHECK-NOT: !llvm.access.group
// CHECK: @__kmpc_dispatch_next
#pragma omp for simd schedule(dynamic)
for(int i = 0; i < 10; ++i);
return 0;
}
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