[OpenMP] Prevent nesting of target constructs within target code execution regions.
Summary:
This patch enhances Sema to check for the following restriction:
OpenMP 4.5 [2.17 Nesting of Regions]
If a target, target update, target data, target enter data, or
target exit data construct is encountered during execution of a
target region, the behavior is unspecified.
Reviewers: ABataev
Differential Revision: http://reviews.llvm.org/D16758
llvm-svn: 259464
diff --git a/clang/test/OpenMP/target_parallel_reduction_messages.cpp b/clang/test/OpenMP/target_parallel_reduction_messages.cpp
index 6f9441b..8a2366e 100644
--- a/clang/test/OpenMP/target_parallel_reduction_messages.cpp
+++ b/clang/test/OpenMP/target_parallel_reduction_messages.cpp
@@ -131,7 +131,7 @@
foo();
#pragma omp target parallel private(i), reduction(+ : j), reduction(+ : q) // expected-error 4 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
-#pragma omp target parallel private(k)
+#pragma omp parallel private(k)
#pragma omp target parallel reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
#pragma omp target parallel reduction(+ : p), reduction(+ : p) // expected-error 3 {{variable can appear only once in OpenMP 'reduction' clause}} expected-note 3 {{previously referenced here}}
@@ -139,17 +139,20 @@
#pragma omp target parallel reduction(+ : r) // expected-error 2 {{const-qualified list item cannot be reduction}}
foo();
#pragma omp target parallel shared(i)
-#pragma omp target parallel reduction(min : i)
+ foo();
+#pragma omp parallel reduction(min : i)
#pragma omp target parallel reduction(max : j) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
#pragma omp target parallel
#pragma omp for private(fl)
for (int i = 0; i < 10; ++i)
+ {}
#pragma omp target parallel reduction(+ : fl)
foo();
#pragma omp target parallel
#pragma omp for reduction(- : fl)
for (int i = 0; i < 10; ++i)
+ {}
#pragma omp target parallel reduction(+ : fl)
foo();
@@ -228,7 +231,7 @@
foo();
#pragma omp target parallel private(i), reduction(+ : j), reduction(+ : q) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
-#pragma omp target parallel private(k)
+#pragma omp parallel private(k)
#pragma omp target parallel reduction(+ : p), reduction(+ : p) // expected-error 2 {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
#pragma omp target parallel reduction(+ : p), reduction(+ : p) // expected-error {{variable can appear only once in OpenMP 'reduction' clause}} expected-note {{previously referenced here}}
@@ -236,17 +239,20 @@
#pragma omp target parallel reduction(+ : r) // expected-error {{const-qualified list item cannot be reduction}}
foo();
#pragma omp target parallel shared(i)
-#pragma omp target parallel reduction(min : i)
+ foo();
+#pragma omp parallel reduction(min : i)
#pragma omp target parallel reduction(max : j) // expected-error {{argument of OpenMP clause 'reduction' must reference the same object in all threads}}
foo();
#pragma omp target parallel
#pragma omp for private(fl)
for (int i = 0; i < 10; ++i)
+ {}
#pragma omp target parallel reduction(+ : fl)
foo();
#pragma omp target parallel
#pragma omp for reduction(- : fl)
for (int i = 0; i < 10; ++i)
+ {}
#pragma omp target parallel reduction(+ : fl)
foo();
static int m;