8e29b4b323
Fix for https://bugs.llvm.org/show_bug.cgi?id=49723. Eliminated references from task dependency hash to node allocated on stack, thus eliminated accesses to stale memory. So the node now never freed. Uncommented assertion which triggered when stale memory accessed. Removed unneeded ref count increment for stack allocated node. Differential Revision: https://reviews.llvm.org/D106705
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
// RUN: %libomp-compile-and-run
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// test checks IN dep kind in depend clause on taskwait construct
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// uses codegen emulation
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#include <stdio.h>
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#include <omp.h>
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// ---------------------------------------------------------------------------
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// internal data to emulate compiler codegen
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typedef struct DEP {
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size_t addr;
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size_t len;
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unsigned char flags;
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} _dep;
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typedef struct ID {
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int reserved_1;
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int flags;
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int reserved_2;
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int reserved_3;
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char *psource;
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} _id;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int __kmpc_global_thread_num(_id*);
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extern void __kmpc_omp_wait_deps(_id *, int, int, _dep *, int, _dep *);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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int main()
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{
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int i1,i2,i3;
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omp_set_num_threads(2);
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printf("addresses: %p %p %p\n", &i1, &i2, &i3);
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#pragma omp parallel
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{
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int t = omp_get_thread_num();
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printf("thread %d enters parallel\n", t);
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#pragma omp single
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{
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#pragma omp task depend(in: i3)
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{
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int th = omp_get_thread_num();
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printf("task 0 created by th %d, executed by th %d\n", t, th);
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}
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#pragma omp task depend(in: i2)
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{
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int th = omp_get_thread_num();
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printf("task 1 created by th %d, executed by th %d\n", t, th);
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}
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// #pragma omp taskwait depend(in: i1, i2)
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{
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_dep sdep[2];
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static _id loc = {0, 2, 0, 0, ";test9.c;func;60;0;;"};
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int gtid = __kmpc_global_thread_num(&loc);
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sdep[0].addr = (size_t)&i2;
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sdep[0].flags = 1; // 1-in, 2-out, 3-inout, 4-mtx, 8-inoutset
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sdep[1].addr = (size_t)&i1;
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sdep[1].flags = 1; // in
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__kmpc_omp_wait_deps(&loc, gtid, 2, sdep, 0, NULL);
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}
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printf("single done\n");
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}
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}
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printf("passed\n");
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return 0;
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}
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