[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
llvm-svn: 276177
diff --git a/clang/test/OpenMP/target_update_depend_messages.cpp b/clang/test/OpenMP/target_update_depend_messages.cpp
index fe3325d8..64383a0 100644
--- a/clang/test/OpenMP/target_update_depend_messages.cpp
+++ b/clang/test/OpenMP/target_update_depend_messages.cpp
@@ -50,7 +50,7 @@
#pragma omp target update to(z) depend(in : argv[argc: // expected-error {{expected expression}} expected-error {{expected ']'}} expected-error {{expected ')'}} expected-note {{to match this '['}} expected-note {{to match this '('}}
#pragma omp target update to(z) depend(in : argv[argc:argc] // expected-error {{expected ')'}} expected-note {{to match this '('}}
#pragma omp target update to(z) depend(in : argv[0:-1]) // expected-error {{section length is evaluated to a negative value -1}}
- #pragma omp target update to(z) depend(in : argv[-1:0]) // expected-error {{section lower bound is evaluated to a negative value -1}}
+ #pragma omp target update to(z) depend(in : argv[-1:0])
#pragma omp target update to(z) depend(in : argv[:]) // expected-error {{section length is unspecified and cannot be inferred because subscripted value is not an array}}
#pragma omp target update to(z) depend(in : argv[3:4:1]) // expected-error {{expected ']'}} expected-note {{to match this '['}}
#pragma omp target update to(z) depend(in:a[0:1]) // expected-error {{subscripted value is not an array or pointer}}
@@ -98,7 +98,7 @@
#pragma omp target update to(z) depend(in : argv[argc: // expected-error {{expected expression}} expected-error {{expected ']'}} expected-error {{expected ')'}} expected-note {{to match this '['}} expected-note {{to match this '('}}
#pragma omp target update to(z) depend(in : argv[argc:argc] // expected-error {{expected ')'}} expected-note {{to match this '('}}
#pragma omp target update to(z) depend(in : argv[0:-1]) // expected-error {{section length is evaluated to a negative value -1}}
- #pragma omp target update to(z) depend(in : argv[-1:0]) // expected-error {{section lower bound is evaluated to a negative value -1}}
+ #pragma omp target update to(z) depend(in : argv[-1:0])
#pragma omp target update to(z) depend(in : argv[:]) // expected-error {{section length is unspecified and cannot be inferred because subscripted value is not an array}}
#pragma omp target update to(z) depend(in : argv[3:4:1]) // expected-error {{expected ']'}} expected-note {{to match this '['}}
#pragma omp target update to(z) depend(in:a[0:1]) // expected-error {{subscripted value is not an array or pointer}}