14de1bb711
### Issue: Variable stride not recognized as non-contiguous `CGOpenMPRuntime.cpp` failed to detect `DeclRefExpr`, `MemberExpr`, `ArraySubscriptExpr` as non-contiguous. **Fixes**: `clang/lib/CodeGen/CGOpenMPRuntime.cpp` - Variable stride detection + dimension count logic Detect variable stride expressions (`DeclRefExpr/MemberExpr/ArraySubscriptExpr`) as non-contiguous Added testcases to cover stack arrays, heap pointers, struct members, etc., for expression semantics in non-contiguous update.
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
// RUN: %libomptarget-compile-run-and-check-generic
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// Tests non-contiguous array sections with variable stride on heap-allocated
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// pointers.
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main() {
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int stride = 2;
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int len = 10;
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double *result = (double *)malloc(len * sizeof(double));
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// Initialize
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for (int i = 0; i < len; i++) {
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result[i] = 0;
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}
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#pragma omp target enter data map(to : stride, len, result[0 : len])
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#pragma omp target map(alloc : result[0 : len])
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{
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for (int i = 0; i < len; i++) {
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result[i] = i;
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}
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}
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// Test FROM
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#pragma omp target map(alloc : result[0 : len])
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{
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for (int i = 0; i < len; i++) {
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result[i] += i * 10;
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}
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}
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#pragma omp target update from(result[0 : 5 : stride])
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printf("heap ptr variable stride (from):\n");
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for (int i = 0; i < len; i++)
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printf("%f\n", result[i]);
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// Test TO: Reset, modify host, update to device
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#pragma omp target map(alloc : result[0 : len])
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{
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for (int i = 0; i < len; i++) {
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result[i] = i * 2;
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}
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}
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for (int i = 0; i < 5; i++) {
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result[i * stride] = i + 100;
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}
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#pragma omp target update to(result[0 : 5 : stride])
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#pragma omp target map(alloc : result[0 : len])
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{
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for (int i = 0; i < len; i++) {
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result[i] += 100;
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}
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}
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#pragma omp target update from(result[0 : len])
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printf("heap ptr variable stride (to):\n");
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for (int i = 0; i < len; i++)
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printf("%f\n", result[i]);
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#pragma omp target exit data map(delete : stride, len, result[0 : len])
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free(result);
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return 0;
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}
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// CHECK: heap ptr variable stride (from):
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 22.000000
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 44.000000
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 66.000000
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// CHECK-NEXT: 0.000000
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// CHECK-NEXT: 88.000000
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// CHECK-NEXT: 0.000000
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// CHECK: heap ptr variable stride (to):
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// CHECK-NEXT: 200.000000
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// CHECK-NEXT: 102.000000
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// CHECK-NEXT: 201.000000
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// CHECK-NEXT: 106.000000
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// CHECK-NEXT: 202.000000
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// CHECK-NEXT: 110.000000
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// CHECK-NEXT: 203.000000
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// CHECK-NEXT: 114.000000
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// CHECK-NEXT: 204.000000
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// CHECK-NEXT: 118.000000
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