[OpenMP] Allow negative lower bound in array sections based on pointers

OpenMP 4.5 removed the restriction that array section lower bound must be non negative.
This change is to allow negative values for array section based on pointers.
For array section based on array type there is still a restriction: "The array section must be a subset of the original array."

Patch by David S.

Differential Revision: https://reviews.llvm.org/D22481


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@276177 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/test/OpenMP/target_parallel_for_simd_map_messages.cpp b/test/OpenMP/target_parallel_for_simd_map_messages.cpp
index 93f0be81e3..195b39c595 100644
--- a/test/OpenMP/target_parallel_for_simd_map_messages.cpp
+++ b/test/OpenMP/target_parallel_for_simd_map_messages.cpp
@@ -80,6 +80,10 @@ T tmain(T argc) {
   for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(x: y) // expected-error {{incorrect map type, expected one of 'to', 'from', 'tofrom', 'alloc', 'release', or 'delete'}}
   for (i = 0; i < argc; ++i) foo();
+#pragma omp target parallel for simd map(l[-1:]) // expected-error 2 {{array section must be a subset of the original array}}
+  for (i = 0; i < argc; ++i) foo();
+#pragma omp target parallel for simd map(l[:-1]) // expected-error 2 {{section length is evaluated to a negative value -1}}
+  for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(x)
   for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(tofrom: t[:I])
@@ -196,6 +200,10 @@ int main(int argc, char **argv) {
   for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(x: y) // expected-error {{incorrect map type, expected one of 'to', 'from', 'tofrom', 'alloc', 'release', or 'delete'}}
   for (i = 0; i < argc; ++i) foo();
+#pragma omp target parallel map(l[-1:]) // expected-error {{array section must be a subset of the original array}}
+  for (i = 0; i < argc; ++i) foo();
+#pragma omp target parallel map(l[:-1]) // expected-error {{section length is evaluated to a negative value -1}}
+  for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(x)
   for (i = 0; i < argc; ++i) foo();
 #pragma omp target parallel for simd map(to: x)