4782a4ab0a
The expectation for multiple iterators used in a single depend clause (`depend(iterator(i=0:5,j=0:5), in:x[i][j])`) is that the iterator space is the product of the iteration vectors (25 in that case). The current codeGen only works correctly, if `numIterators() = 1`. For more iterators, the execution results in runtime assertions or segfaults. The modified codeGen first calculates the iteration space, then multiplies to the number of dependencies in the depend clause and finally adds to the total number of iterator dependencies.
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
// RUN: %clang_cc1 -verify -fopenmp -triple x86_64-unknown-linux-gnu \
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// RUN: -disable-llvm-passes -emit-llvm %s -o - | FileCheck %s
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// expected-no-diagnostics
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int x[100];
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int y[100];
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int z[100][100];
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// CHECK-LABEL: @many_iterators_single_clause(
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// CHECK: [[VLA:%.*]] = alloca [[STRUCT_KMP_DEPEND_INFO:%.*]], i64 10, align 16
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// CHECK: = call i32 @__kmpc_omp_task_with_deps(ptr {{.*}}, i32 {{.*}}, ptr {{.*}}, i32 10, ptr {{.*}}, i32 0, ptr null)
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void many_iterators_single_clause(void) {
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#pragma omp task depend(iterator(j=0:5), in: x[j], y[j])
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{
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}
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}
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// CHECK-LABEL: @many_iterators_many_clauses(
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// CHECK: [[VLA:%.*]] = alloca [[STRUCT_KMP_DEPEND_INFO:%.*]], i64 10, align 16
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// CHECK: = call i32 @__kmpc_omp_task_with_deps(ptr {{.*}}, i32 {{.*}}, ptr {{.*}}, i32 10, ptr {{.*}}, i32 0, ptr null)
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void many_iterators_many_clauses(void) {
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#pragma omp task depend(iterator(j=0:5), in: x[j]) \
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depend(iterator(j=0:5), in: y[j])
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{
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}
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}
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// CHECK-LABEL: @multidim_iterators_clause1(
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// CHECK: [[VLA:%.*]] = alloca [[STRUCT_KMP_DEPEND_INFO:%.*]], i64 1, align 16
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// CHECK: = call i32 @__kmpc_omp_task_with_deps(ptr {{.*}}, i32 {{.*}}, ptr {{.*}}, i32 1, ptr {{.*}}, i32 0, ptr null)
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void multidim_iterators_clause1(void) {
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#pragma omp task depend(iterator(i=0:1, j=0:1), in: z[i][j])
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{
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}
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}
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// CHECK-LABEL: @multidim_iterators_offset_clause(
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// CHECK: [[VLA:%.*]] = alloca [[STRUCT_KMP_DEPEND_INFO:%.*]], i64 1, align 16
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// CHECK: = call i32 @__kmpc_omp_task_with_deps(ptr {{.*}}, i32 {{.*}}, ptr {{.*}}, i32 1, ptr {{.*}}, i32 0, ptr null)
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void multidim_iterators_offset_clause(void) {
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#pragma omp task depend(iterator(i=5:6, j=10:11), in: z[i][j])
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{
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}
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}
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// CHECK-LABEL: @multidim_iterators_clause25(
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// CHECK: [[VLA:%.*]] = alloca [[STRUCT_KMP_DEPEND_INFO:%.*]], i64 25, align 16
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// CHECK: = call i32 @__kmpc_omp_task_with_deps(ptr {{.*}}, i32 {{.*}}, ptr {{.*}}, i32 25, ptr {{.*}}, i32 0, ptr null)
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void multidim_iterators_clause25(void) {
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#pragma omp task depend(iterator(i=0:5, j=0:5), in: z[i][j])
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{
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}
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}
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