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Revert "[OPENMP]Fix PR47621: Variable used by task inside a template function is not made firstprivate by default" 

This reverts commit d1419c9fda to fix the
buffer overflow detected by address sanitiizer.
This commit is contained in:
Alexey Bataev 2020-09-24 14:41:14 -04:00
parent 29ec5901c9
commit cde7d90cc7
3 changed files with 10 additions and 64 deletions
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19
clang/lib/Sema/SemaOpenMP.cpp
View File

@ -159,7 +159,6 @@ private:
OpenMPDirectiveKind Directive = OMPD_unknown;
DeclarationNameInfo DirectiveName;
Scope *CurScope = nullptr;
DeclContext *Context = nullptr;
SourceLocation ConstructLoc;
/// Set of 'depend' clauses with 'sink|source' dependence kind. Required to
/// get the data (loop counters etc.) about enclosing loop-based construct.
@ -919,7 +918,6 @@ public:
const SharingMapTy *Top = getTopOfStackOrNull();
return Top ? Top->CurScope : nullptr;
}
void setContext(DeclContext *DC) { getTopOfStack().Context = DC; }
SourceLocation getConstructLoc() const {
const SharingMapTy *Top = getTopOfStackOrNull();
return Top ? Top->ConstructLoc : SourceLocation();
@ -1533,17 +1531,11 @@ bool DSAStackTy::isOpenMPLocal(VarDecl *D, const_iterator I) const {
for (const_iterator E = end(); I != E; ++I) {
if (isImplicitOrExplicitTaskingRegion(I->Directive) ||
isOpenMPTargetExecutionDirective(I->Directive)) {
if (I->CurScope) {
Scope *TopScope = I->CurScope->getParent();
Scope *CurScope = getCurScope();
while (CurScope && CurScope != TopScope && !CurScope->isDeclScope(D))
CurScope = CurScope->getParent();
return CurScope != TopScope;
}
for (DeclContext *DC = D->getDeclContext(); DC; DC = DC->getParent())
if (I->Context == DC)
return true;
return false;
Scope *TopScope = I->CurScope ? I->CurScope->getParent() : nullptr;
Scope *CurScope = getCurScope();
while (CurScope && CurScope != TopScope && !CurScope->isDeclScope(D))
CurScope = CurScope->getParent();
return CurScope != TopScope;
}
}
return false;
@ -4156,7 +4148,6 @@ void Sema::ActOnOpenMPRegionStart(OpenMPDirectiveKind DKind, Scope *CurScope) {
default:
llvm_unreachable("Unknown OpenMP directive");
}
DSAStack->setContext(CurContext);
}
int Sema::getNumberOfConstructScopes(unsigned Level) const {

10
clang/test/OpenMP/nvptx_target_parallel_reduction_codegen_tbaa_PR46146.cpp
View File

@ -1,8 +1,8 @@
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple nvptx64-unknown-unknown -aux-triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple i386-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm-bc %s -o %t-x86-host.bc
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple nvptx-unknown-unknown -aux-triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -fexceptions -fcxx-exceptions -aux-triple powerpc64le-unknown-unknown -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -fopenmp-cuda-mode -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm-bc %s -o %t-ppc-host.bc
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -fopenmp-cuda-mode -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple nvptx64-unknown-unknown -aux-triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx64-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-ppc-host.bc -o - | FileCheck %s
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -fopenmp-cuda-mode -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple i386-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm-bc %s -o %t-x86-host.bc
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -fopenmp-cuda-mode -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -triple nvptx-unknown-unknown -aux-triple powerpc64le-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
// RUN: %clang_cc1 -x c++ -O1 -disable-llvm-optzns -verify -fopenmp -fopenmp-cuda-mode -internal-isystem %S/../Headers/Inputs/include -internal-isystem %S/../../lib/Headers/openmp_wrappers -include __clang_openmp_device_functions.h -fexceptions -fcxx-exceptions -aux-triple powerpc64le-unknown-unknown -triple nvptx-unknown-unknown -fopenmp-targets=nvptx-nvidia-cuda -emit-llvm %s -fopenmp-is-device -fopenmp-host-ir-file-path %t-x86-host.bc -o - | FileCheck %s
// expected-no-diagnostics
#ifndef HEADER
#define HEADER

45
clang/test/OpenMP/task_codegen.cpp
View File

@ -389,49 +389,4 @@ struct S1 {
// CHECK-LABEL: taskinit
// CHECK: call i8* @__kmpc_omp_task_alloc(
template <typename T = void>
void foobar() {
float a;
#pragma omp parallel
#pragma omp single
{
double b;
#pragma omp task
a += b;
}
}
// CHECK: define void @{{.+}}xxxx{{.+}}()
void xxxx() {
// CHECK: call void @{{.+}}foobar{{.+}}()
foobar();
}
// CHECK: define {{.*}}void @{{.+}}foobar{{.+}}()
// CHECK: call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* {{.+}}, i32 1, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, float*)* [[PAR_OUTLINED:@.+]] to void (i32*, i32*, ...)*), float* %{{.+}})
// CHECK: define internal void [[PAR_OUTLINED]](i32* {{.+}}, i32* {{.+}}, float* {{.*}}[[A_ADDR:%.+]])
// UNTIEDRT: [[A_ADDR_REF:%.+]] = alloca float*,
// CHECK: [[B_ADDR:%.+]] = alloca double,
// UNTIEDRT: [[A_ADDR:%.+]] = load float*, float** [[A_ADDR_REF]],
// Copy `a` to the list of shared variables
// CHECK: [[SHARED_A:%.+]] = getelementptr inbounds %{{.+}}, [[SHAREDS_TY:%.+]]* [[SHAREDS:%.+]], i32 0, i32 0
// CHECK: store float* [[A_ADDR]], float** [[SHARED_A]],
// Allocate task.
// CHECK: [[RES:%.+]] = call i8* @__kmpc_omp_task_alloc(%struct.ident_t* {{.+}}, i32 {{.+}}, i32 1, i64 48, i64 8, i32 (i32, i8*)* bitcast (i32 (i32, [[T_TASK_TY:%.+]]*)* @{{.+}} to i32 (i32, i8*)*))
// CHECK: [[TD:%.+]] = bitcast i8* [[RES]] to [[T_TASK_TY]]*
// Copy shared vars.
// CHECK: [[TD_TASK:%.+]] = getelementptr inbounds [[T_TASK_TY]], [[T_TASK_TY]]* [[TD]], i32 0, i32 0
// CHECK: [[TD_TASK_SHARES_REF:%.+]] = getelementptr inbounds %{{.+}}, %{{.+}}* [[TD_TASK]], i32 0, i32 0
// CHECK: [[TD_TASK_SHARES:%.+]] = load i8*, i8** [[TD_TASK_SHARES_REF]],
// CHECK: [[SHAREDS_BC:%.+]] = bitcast [[SHAREDS_TY]]* [[SHAREDS]] to i8*
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TD_TASK_SHARES]], i8* align 8 [[SHAREDS_BC]], i64 8, i1 false)
// Copy firstprivate value of `b`.
// CHECK: [[TD_TASK_PRIVS:%.+]] = getelementptr inbounds [[T_TASK_TY]], [[T_TASK_TY]]* [[TD]], i32 0, i32 1
// CHECK: [[TD_TASK_PRIVS_B:%.+]] = getelementptr inbounds %{{.+}}, %{{.+}}* [[TD_TASK_PRIVS]], i32 0, i32 0
// CHECK: [[B_VAL:%.+]] = load double, double* [[B_ADDR]],
// CHECK: store double [[B_VAL]], double* [[TD_TASK_PRIVS_B]],
#endif