ed6b578040
llvm function is marked nounwind This fixes cases where an invoke is emitted, despite the called llvm function being marked nounwind, because ConstructAttributeList failed to add the attribute to the attribute list. llvm optimization passes turn invokes into calls and optimize away the exception handling code, but it's better to avoid emitting the code in the front-end if the called function is known not to raise an exception. Differential Revision: https://reviews.llvm.org/D83906
93 lines
4.2 KiB
C++
93 lines
4.2 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -o - %s | FileCheck %s
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// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -emit-pch -o %t %s
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// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -include-pch %t -fsyntax-only -verify %s -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -emit-llvm -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -o - %s | FileCheck --check-prefix SIMD-ONLY0 %s
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// RUN: %clang_cc1 -fopenmp-simd -x c++ -std=c++11 -fexceptions -fcxx-exceptions -triple x86_64-unknown-unknown -emit-pch -o %t %s
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// RUN: %clang_cc1 -fopenmp-simd -x c++ -std=c++11 -include-pch %t -fsyntax-only -verify %s -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-llvm -o - | FileCheck --check-prefix SIMD-ONLY0 %s
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// SIMD-ONLY0-NOT: {{__kmpc|__tgt}}
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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// CHECK-LABEL: foo
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void foo() { extern void mayThrow(); mayThrow(); };
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// CHECK-LABEL: bar
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void bar() { extern void mayThrow(); mayThrow(); };
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template <class T>
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T tmain() {
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#pragma omp parallel sections
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{
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foo();
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}
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return T();
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}
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// CHECK-LABEL: @main
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int main() {
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// CHECK: call void (%{{.+}}*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%{{.+}}* @{{.+}}, i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* [[OMP_PARALLEL_FUNC:@.+]] to void (i32*, i32*, ...)*))
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// CHECK-LABEL: }
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// CHECK: define internal void [[OMP_PARALLEL_FUNC]](i32* noalias [[GTID_PARAM_ADDR:%.+]], i32* noalias %{{.+}})
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// CHECK: store i32* [[GTID_PARAM_ADDR]], i32** [[GTID_REF_ADDR:%.+]],
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#pragma omp parallel sections
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{
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// CHECK: store i32 0, i32* [[LB_PTR:%.+]],
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// CHECK: store i32 1, i32* [[UB_PTR:%.+]],
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// CHECK: call void @__kmpc_for_static_init_4(%{{.+}}* @{{.+}}, i32 [[GTID:%.+]], i32 34, i32* [[IS_LAST_PTR:%.+]], i32* [[LB_PTR]], i32* [[UB_PTR]], i32* [[STRIDE_PTR:%.+]], i32 1, i32 1)
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// <<UB = min(UB, GlobalUB);>>
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// CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]]
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// CHECK: [[CMP:%.+]] = icmp slt i32 [[UB]], 1
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// CHECK: [[MIN_UB_GLOBALUB:%.+]] = select i1 [[CMP]], i32 [[UB]], i32 1
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// CHECK: store i32 [[MIN_UB_GLOBALUB]], i32* [[UB_PTR]]
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// <<IV = LB;>>
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// CHECK: [[LB:%.+]] = load i32, i32* [[LB_PTR]]
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// CHECK: store i32 [[LB]], i32* [[IV_PTR:%.+]]
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// CHECK: br label %[[INNER_FOR_COND:.+]]
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// CHECK: [[INNER_FOR_COND]]
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// <<IV <= UB?>>
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// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
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// CHECK: [[UB:%.+]] = load i32, i32* [[UB_PTR]]
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// CHECK: [[CMP:%.+]] = icmp sle i32 [[IV]], [[UB]]
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// CHECK: br i1 [[CMP]], label %[[INNER_LOOP_BODY:.+]], label %[[INNER_LOOP_END:.+]]
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// CHECK: [[INNER_LOOP_BODY]]
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// <<TRUE>> - > <BODY>
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// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
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// CHECK: switch i32 [[IV]], label %[[SECTIONS_EXIT:.+]] [
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// CHECK-NEXT: i32 0, label %[[SECTIONS_CASE0:.+]]
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// CHECK-NEXT: i32 1, label %[[SECTIONS_CASE1:.+]]
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#pragma omp section
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// CHECK: [[SECTIONS_CASE0]]
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// CHECK-NEXT: invoke void @{{.*}}foo{{.*}}()
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// CHECK: br label %[[SECTIONS_EXIT]]
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foo();
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#pragma omp section
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// CHECK: [[SECTIONS_CASE1]]
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// CHECK-NEXT: invoke void @{{.*}}bar{{.*}}()
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// CHECK: br label %[[SECTIONS_EXIT]]
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bar();
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// CHECK: [[SECTIONS_EXIT]]
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// <<++IV;>>
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// CHECK: [[IV:%.+]] = load i32, i32* [[IV_PTR]]
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// CHECK-NEXT: [[INC:%.+]] = add nsw i32 [[IV]], 1
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// CHECK-NEXT: store i32 [[INC]], i32* [[IV_PTR]]
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// CHECK-NEXT: br label %[[INNER_FOR_COND]]
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// CHECK: [[INNER_LOOP_END]]
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}
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// CHECK: call void @__kmpc_for_static_fini(%{{.+}}* @{{.+}}, i32 [[GTID]])
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return tmain<int>();
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}
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// CHECK-LABEL: tmain
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// CHECK: call void {{.*}} @__kmpc_fork_call(
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// CHECK-NOT: __kmpc_global_thread_num
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// CHECK: call void @__kmpc_for_static_init_4(
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// CHECK: invoke void @{{.*}}foo{{.*}}()
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// CHECK-NEXT: unwind label %[[TERM_LPAD:.+]]
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// CHECK: call void @__kmpc_for_static_fini(
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// CHECK-NEXT: ret
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// CHECK: [[TERM_LPAD]]
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// CHECK: call void @__clang_call_terminate(i8*
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// CHECK-NEXT: unreachable
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#endif
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