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[OPENMP] Fix PR35156: Get correct thread id with windows exceptions.

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If the thread id is requested in windows mode within funclets, we may
generate incorrect function call that could lead to broken codegen.

llvm-svn: 317208
This commit is contained in:
Alexey Bataev 2017-11-02 14:25:34 +00:00
parent 96087f3825
commit 0e1b45897e
12 changed files with 56 additions and 16 deletions
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14
clang/lib/CodeGen/CGOpenMPRuntime.cpp
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@ -1451,7 +1451,8 @@ llvm::Value *CGOpenMPRuntime::getThreadID(CodeGenFunction &CGF,
return ThreadID;
}
// If exceptions are enabled, do not use parameter to avoid possible crash.
if (!CGF.getInvokeDest()) {
if (!CGF.getInvokeDest() ||
CGF.Builder.GetInsertBlock() == CGF.AllocaInsertPt->getParent()) {
if (auto *OMPRegionInfo =
dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) {
if (OMPRegionInfo->getThreadIDVariable()) {
@ -1475,12 +1476,13 @@ llvm::Value *CGOpenMPRuntime::getThreadID(CodeGenFunction &CGF,
// function.
CGBuilderTy::InsertPointGuard IPG(CGF.Builder);
CGF.Builder.SetInsertPoint(CGF.AllocaInsertPt);
ThreadID =
CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_global_thread_num),
emitUpdateLocation(CGF, Loc));
auto *Call = CGF.Builder.CreateCall(
createRuntimeFunction(OMPRTL__kmpc_global_thread_num),
emitUpdateLocation(CGF, Loc));
Call->setCallingConv(CGF.getRuntimeCC());
auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn);
Elem.second.ThreadID = ThreadID;
return ThreadID;
Elem.second.ThreadID = Call;
return Call;
}
void CGOpenMPRuntime::functionFinished(CodeGenFunction &CGF) {

2
clang/test/OpenMP/critical_codegen.cpp
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@ -78,7 +78,7 @@ void critical_ref(S &s) {
void parallel_critical() {
#pragma omp parallel
#pragma omp critical
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call void @__kmpc_critical({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke void {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],

2
clang/test/OpenMP/for_codegen.cpp
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@ -355,7 +355,7 @@ int foo() {return 0;};
void parallel_for(float *a) {
#pragma omp parallel
#pragma omp for schedule(static, 5)
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call void @__kmpc_for_static_init_4u({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke i32 {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],

2
clang/test/OpenMP/for_simd_codegen.cpp
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@ -673,7 +673,7 @@ int bar() {return 0;};
void parallel_simd(float *a) {
#pragma omp parallel
#pragma omp for simd
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: invoke i32 {{.*}}bar{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],
// TERM_DEBUG-NOT: __kmpc_global_thread_num

2
clang/test/OpenMP/master_codegen.cpp
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@ -49,7 +49,7 @@ int main() {
void parallel_master() {
#pragma omp parallel
#pragma omp master
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call i32 @__kmpc_master({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke void {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],

38
clang/test/OpenMP/openmp_win_codegen.cpp Normal file
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@ -0,0 +1,38 @@
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple x86_64-pc-windows-msvc18.0.0 -std=c++11 -fms-compatibility-version=18 -fms-extensions -emit-llvm %s -fexceptions -fcxx-exceptions -o - | FileCheck %s
// REQUIRES: x86-registered-target
// expected-no-diagnostics
void foo();
void bar();
// CHECK-LABEL: @main
int main() {
// CHECK: call void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%ident_t* @0, i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OUTLINED:@.+]] to void (i32*, i32*, ...)*))
#pragma omp parallel
{
try {
foo();
} catch (int t) {
#pragma omp critical
{
bar();
};
}
};
// CHECK: ret i32 0
return 0;
}
// CHECK: define internal void [[OUTLINED]](
// CHECK: [[GID:%.+]] = call i32 @__kmpc_global_thread_num(%ident_t* @0)
// CHECK: invoke void @{{.+}}foo
// CHECK: catchswitch within
// CHECK: catchpad within
// CHECK: call void @__kmpc_critical(%ident_t* @0, i32 [[GID]],
// CHECK: invoke void @{{.+}}bar
// CHECK: call void @__kmpc_end_critical(%ident_t* @0, i32 [[GID]],
// CHECK: catchret from
// CHECK: cleanuppad within
// CHECK: call void @__kmpc_end_critical(%ident_t* @0, i32 [[GID]],
// CHECK: cleanupret from

2
clang/test/OpenMP/parallel_for_codegen.cpp
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@ -348,7 +348,7 @@ int foo() {return 0;};
void parallel_for(float *a, int n) {
float arr[n];
#pragma omp parallel for schedule(static, 5) private(arr)
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call void @__kmpc_for_static_init_4u({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke i32 {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],

2
clang/test/OpenMP/parallel_for_simd_codegen.cpp
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@ -668,7 +668,7 @@ int bar() {return 0;};
// TERM_DEBUG-LABEL: parallel_simd
void parallel_simd(float *a) {
#pragma omp parallel for simd
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: invoke i32 {{.*}}bar{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],
// TERM_DEBUG-NOT: __kmpc_global_thread_num

2
clang/test/OpenMP/parallel_sections_codegen.cpp
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@ -74,7 +74,7 @@ int main() {
// CHECK-LABEL: tmain
// CHECK: call void {{.*}} @__kmpc_fork_call(
// CHECK: __kmpc_global_thread_num
// CHECK-NOT: __kmpc_global_thread_num
// CHECK: call void @__kmpc_for_static_init_4(
// CHECK: invoke void @{{.*}}foo{{.*}}()
// CHECK-NEXT: unwind label %[[TERM_LPAD:.+]]

2
clang/test/OpenMP/sections_codegen.cpp
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@ -84,7 +84,7 @@ int main() {
// CHECK-LABEL: tmain
// CHECK: call void {{.*}} @__kmpc_fork_call(
// CHECK: __kmpc_global_thread_num
// CHECK-NOT: __kmpc_global_thread_num
// CHECK: call void @__kmpc_for_static_init_4(
// CHECK: invoke void @{{.*}}foo{{.*}}()
// CHECK-NEXT: unwind label %[[TERM_LPAD:.+]]

2
clang/test/OpenMP/single_codegen.cpp
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@ -190,7 +190,7 @@ int main() {
void parallel_single() {
#pragma omp parallel
#pragma omp single
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call i32 @__kmpc_single({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke void {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],

2
clang/test/OpenMP/taskgroup_codegen.cpp
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@ -40,7 +40,7 @@ int main() {
void parallel_taskgroup() {
#pragma omp parallel
#pragma omp taskgroup
// TERM_DEBUG: __kmpc_global_thread_num
// TERM_DEBUG-NOT: __kmpc_global_thread_num
// TERM_DEBUG: call void @__kmpc_taskgroup({{.+}}), !dbg [[DBG_LOC_START:![0-9]+]]
// TERM_DEBUG: invoke void {{.*}}foo{{.*}}()
// TERM_DEBUG: unwind label %[[TERM_LPAD:.+]],