[OPENMP] Codegen for 'firstprivate' clause.

This patch generates some helper variables that used as private copies of the corresponding original variables inside an OpenMP 'parallel' directive. These generated variables are initialized by copy using values of the original variables (with the copy constructor, if any). For arrays, initializator is generated for single element and in the codegen procedure this initial value is automatically propagated between all elements of the private copy.
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 an implicit barier is generated 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/D5140

llvm-svn: 219295

1 files changed, 8 insertions, 8 deletions

diff --git a/clang/test/OpenMP/parallel_codegen.cpp b/clang/test/OpenMP/parallel_codegen.cpp
index d9ff5ac0233..e50ab43c280 100644
--- a/clang/test/OpenMP/parallel_codegen.cpp
+++ b/clang/test/OpenMP/parallel_codegen.cpp
@@ -39,7 +39,7 @@ int main (int argc, char **argv) {
 // CHECK:       [[ARGC_REF:%.+]] = getelementptr inbounds %struct.anon* [[AGG_CAPTURED]], i32 0, i32 0
 // CHECK-NEXT:  store i32* {{%[a-z0-9.]+}}, i32** [[ARGC_REF]]
 // CHECK-NEXT:  [[BITCAST:%.+]] = bitcast %struct.anon* [[AGG_CAPTURED]] to i8*
-// CHECK-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon*)* @__captured_stmt to void (i32*, i32*, ...)*), i8* [[BITCAST]])
+// CHECK-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon*)* @.omp_outlined. to void (i32*, i32*, ...)*), i8* [[BITCAST]])
 // CHECK-NEXT:  [[ARGV:%.+]] = load i8*** {{%[a-z0-9.]+}}
 // CHECK-NEXT:  [[RET:%.+]] = call {{[a-z]*[ ]?i32}} [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
 // CHECK-NEXT:  ret i32 [[RET]]
@@ -55,13 +55,13 @@ int main (int argc, char **argv) {
 // CHECK-DEBUG-NEXT:  [[KMPC_LOC_PSOURCE_REF:%.+]] = getelementptr inbounds %ident_t* [[LOC_2_ADDR]], i32 0, i32 4
 // CHECK-DEBUG-NEXT:  store i8* getelementptr inbounds ([{{.+}} x i8]* [[LOC1]], i32 0, i32 0), i8** [[KMPC_LOC_PSOURCE_REF]]
 // CHECK-DEBUG-NEXT:  [[BITCAST:%.+]] = bitcast %struct.anon* [[AGG_CAPTURED]] to i8*
-// CHECK-DEBUG-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[LOC_2_ADDR]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon*)* @__captured_stmt to void (i32*, i32*, ...)*), i8* [[BITCAST]])
+// CHECK-DEBUG-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[LOC_2_ADDR]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon*)* @.omp_outlined. to void (i32*, i32*, ...)*), i8* [[BITCAST]])
 // CHECK-DEBUG-NEXT:  [[ARGV:%.+]] = load i8*** {{%[a-z0-9.]+}}
 // CHECK-DEBUG-NEXT:  [[RET:%.+]] = call i32 [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
 // CHECK-DEBUG-NEXT:  ret i32 [[RET]]
 // CHECK-DEBUG-NEXT:  }
 
-// CHECK-LABEL: define internal void @__captured_stmt(i32* %.global_tid., i32* %.bound_tid., %struct.anon* %__context)
+// CHECK-LABEL: define internal void @.omp_outlined.(i32* %.global_tid., i32* %.bound_tid., %struct.anon* %__context)
 // CHECK:       [[CONTEXT_ADDR:%.+]] = alloca %struct.anon*
 // CHECK:       store %struct.anon* %__context, %struct.anon** [[CONTEXT_ADDR]]
 // CHECK:       [[CONTEXT_PTR:%.+]] = load %struct.anon** [[CONTEXT_ADDR]]
@@ -73,7 +73,7 @@ int main (int argc, char **argv) {
 // CHECK:       call void @{{.+terminate.*}}(
 // CHECK-NEXT:  unreachable
 // CHECK-NEXT:  }
-// CHECK-DEBUG-LABEL: define internal void @__captured_stmt(i32* %.global_tid., i32* %.bound_tid., %struct.anon* %__context)
+// CHECK-DEBUG-LABEL: define internal void @.omp_outlined.(i32* %.global_tid., i32* %.bound_tid., %struct.anon* %__context)
 // CHECK-DEBUG:       [[CONTEXT_ADDR:%.+]] = alloca %struct.anon*
 // CHECK-DEBUG:       store %struct.anon* %__context, %struct.anon** [[CONTEXT_ADDR]]
 // CHECK-DEBUG:       [[CONTEXT_PTR:%.+]] = load %struct.anon** [[CONTEXT_ADDR]]
@@ -96,7 +96,7 @@ int main (int argc, char **argv) {
 // CHECK:       [[ARGC_REF:%.+]] = getelementptr inbounds %struct.anon.0* [[AGG_CAPTURED]], i32 0, i32 0
 // CHECK-NEXT:  store i8*** {{%[a-z0-9.]+}}, i8**** [[ARGC_REF]]
 // CHECK-NEXT:  [[BITCAST:%.+]] = bitcast %struct.anon.0* [[AGG_CAPTURED]] to i8*
-// CHECK-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon.0*)* @__captured_stmt1 to void (i32*, i32*, ...)*), i8* [[BITCAST]])
+// CHECK-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon.0*)* @.omp_outlined.1 to void (i32*, i32*, ...)*), i8* [[BITCAST]])
 // CHECK-NEXT:  ret i32 0
 // CHECK-NEXT:  }
 // CHECK-DEBUG:       define linkonce_odr i32 [[TMAIN]](i8** %argc)
@@ -110,11 +110,11 @@ int main (int argc, char **argv) {
 // CHECK-DEBUG-NEXT:  [[KMPC_LOC_PSOURCE_REF:%.+]] = getelementptr inbounds %ident_t* [[LOC_2_ADDR]], i32 0, i32 4
 // CHECK-DEBUG-NEXT:  store i8* getelementptr inbounds ([{{.+}} x i8]* [[LOC2]], i32 0, i32 0), i8** [[KMPC_LOC_PSOURCE_REF]]
 // CHECK-DEBUG-NEXT:  [[BITCAST:%.+]] = bitcast %struct.anon.0* [[AGG_CAPTURED]] to i8*
-// CHECK-DEBUG-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[LOC_2_ADDR]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon.0*)* @__captured_stmt1 to void (i32*, i32*, ...)*), i8* [[BITCAST]])
+// CHECK-DEBUG-NEXT:  call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...)* @__kmpc_fork_call(%ident_t* [[LOC_2_ADDR]], i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, %struct.anon.0*)* @.omp_outlined.1 to void (i32*, i32*, ...)*), i8* [[BITCAST]])
 // CHECK-DEBUG-NEXT:  ret i32 0
 // CHECK-DEBUG-NEXT:  }
 
-// CHECK-LABEL: define internal void @__captured_stmt1(i32* %.global_tid., i32* %.bound_tid., %struct.anon.0* %__context)
+// CHECK-LABEL: define internal void @.omp_outlined.1(i32* %.global_tid., i32* %.bound_tid., %struct.anon.0* %__context)
 // CHECK:       [[CONTEXT_ADDR:%.+]] = alloca %struct.anon.0*
 // CHECK:       store %struct.anon.0* %__context, %struct.anon.0** [[CONTEXT_ADDR]]
 // CHECK:       [[CONTEXT_PTR:%.+]] = load %struct.anon.0** [[CONTEXT_ADDR]]
@@ -126,7 +126,7 @@ int main (int argc, char **argv) {
 // CHECK:       call void @{{.+terminate.*}}(
 // CHECK-NEXT:  unreachable
 // CHECK-NEXT:  }
-// CHECK-DEBUG-LABEL: define internal void @__captured_stmt1(i32* %.global_tid., i32* %.bound_tid., %struct.anon.0* %__context)
+// CHECK-DEBUG-LABEL: define internal void @.omp_outlined.1(i32* %.global_tid., i32* %.bound_tid., %struct.anon.0* %__context)
 // CHECK-DEBUG:       [[CONTEXT_ADDR:%.+]] = alloca %struct.anon.0*
 // CHECK-DEBUG:       store %struct.anon.0* %__context, %struct.anon.0** [[CONTEXT_ADDR]]
 // CHECK-DEBUG:       [[CONTEXT_PTR:%.+]] = load %struct.anon.0** [[CONTEXT_ADDR]]