[OPENMP] Codegen for 'private' clause in 'parallel' directive.
This patch generates some helper variables which used as a private copies of the corresponding original variables inside an OpenMP 'parallel' directive. These generated variables are initialized by default (with the default constructor, if any). In outlined function references to original variables are replaced by the references to these private helper variables. At the end of the initialization of the private variables and implicit barier is set by calling __kmpc_barrier(...) runtime function to be sure that all threads were initialized using original values of the variables.
Differential Revision: http://reviews.llvm.org/D4752
llvm-svn: 220262
diff --git a/clang/test/OpenMP/simd_private_messages.cpp b/clang/test/OpenMP/simd_private_messages.cpp
index e5e4fe5..56922e8 100644
--- a/clang/test/OpenMP/simd_private_messages.cpp
+++ b/clang/test/OpenMP/simd_private_messages.cpp
@@ -22,15 +22,15 @@
S3():a(0) { }
};
const S3 ca[5];
-class S4 { // expected-note {{'S4' declared here}}
+class S4 {
int a;
- S4();
+ S4(); // expected-note {{implicitly declared private here}}
public:
S4(int v):a(v) { }
};
-class S5 { // expected-note {{'S5' declared here}}
+class S5 {
int a;
- S5():a(0) {}
+ S5():a(0) {} // expected-note {{implicitly declared private here}}
public:
S5(int v):a(v) { }
};
@@ -86,8 +86,8 @@
}
int main(int argc, char **argv) {
- S4 e(4); // expected-note {{'e' defined here}}
- S5 g(5); // expected-note {{'g' defined here}}
+ S4 e(4);
+ S5 g(5);
int i;
int &j = i; // expected-note {{'j' defined here}}
#pragma omp simd private // expected-error {{expected '(' after 'private'}}
@@ -110,7 +110,7 @@
for (int k = 0; k < argc; ++k) ++k;
#pragma omp simd private (argv[1]) // expected-error {{expected variable name}}
for (int k = 0; k < argc; ++k) ++k;
- #pragma omp simd private(e, g) // expected-error 2 {{private variable must have an accessible, unambiguous default constructor}}
+ #pragma omp simd private(e, g) // expected-error {{calling a private constructor of class 'S4'}} expected-error {{calling a private constructor of class 'S5'}}
for (int k = 0; k < argc; ++k) ++k;
#pragma omp simd private(h) // expected-error {{threadprivate or thread local variable cannot be private}}
for (int k = 0; k < argc; ++k) ++k;