llvm-project/clang/test/OpenMP/parallel_codegen.cpp

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// RUN: %clang_cc1 -verify -fopenmp -x c++ -emit-llvm %s -triple %itanium_abi_triple -fexceptions -fcxx-exceptions -o - | FileCheck %s
// RUN: %clang_cc1 -fopenmp -x c++ -std=c++11 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -x c++ -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -debug-info-kind=limited -std=c++11 -include-pch %t -verify %s -emit-llvm -o - | FileCheck --check-prefix=CHECK-DEBUG %s
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
// CHECK-DAG: %ident_t = type { i32, i32, i32, i32, i8* }
// CHECK-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
// CHECK-DAG: [[DEF_LOC_2:@.+]] = private unnamed_addr constant %ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
// CHECK-DEBUG-DAG: %ident_t = type { i32, i32, i32, i32, i8* }
// CHECK-DEBUG-DAG: [[STR:@.+]] = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00"
// CHECK-DEBUG-DAG: [[DEF_LOC_2:@.+]] = private unnamed_addr constant %ident_t { i32 0, i32 2, i32 0, i32 0, i8* getelementptr inbounds ([23 x i8], [23 x i8]* [[STR]], i32 0, i32 0) }
// CHECK-DEBUG-DAG: [[LOC1:@.+]] = private unnamed_addr constant [{{.+}} x i8] c";{{.*}}parallel_codegen.cpp;main;[[@LINE+15]];9;;\00"
// CHECK-DEBUG-DAG: [[LOC2:@.+]] = private unnamed_addr constant [{{.+}} x i8] c";{{.*}}parallel_codegen.cpp;tmain;[[@LINE+7]];9;;\00"
template <class T>
void foo(T argc) {}
template <typename T>
int tmain(T argc) {
#pragma omp parallel
foo(argc);
return 0;
}
int main (int argc, char **argv) {
int a[argc];
#pragma omp parallel
foo(a[1]);
return tmain(argv);
}
// CHECK-LABEL: define {{[a-z\_\b]*[ ]?i32}} @main({{i32[ ]?[a-z]*}} %argc, i8** %argv)
// CHECK: store i32 %argc, i32* [[ARGC_ADDR:%.+]],
// CHECK: [[VLA:%.+]] = alloca i32, i{{[0-9]+}} [[VLA_SIZE:%[^,]+]],
// CHECK: call {{.*}}void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%ident_t* [[DEF_LOC_2]], i32 2, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i{{[0-9]+}}, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i{{[0-9]+}} [[VLA_SIZE]], i32* [[VLA]])
// CHECK-NEXT: [[ARGV:%.+]] = load i8**, i8*** {{%[a-z0-9.]+}}
// CHECK-NEXT: [[RET:%.+]] = call {{[a-z\_\b]*[ ]?i32}} [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
// CHECK: ret i32
// CHECK-NEXT: }
// CHECK-DEBUG-LABEL: define i32 @main(i32 %argc, i8** %argv)
// CHECK-DEBUG: [[LOC_2_ADDR:%.+]] = alloca %ident_t
// CHECK-DEBUG: [[KMPC_LOC_VOIDPTR:%.+]] = bitcast %ident_t* [[LOC_2_ADDR]] to i8*
// CHECK-DEBUG-NEXT: [[KMPC_DEFAULT_LOC_VOIDPTR:%.+]] = bitcast %ident_t* [[DEF_LOC_2]] to i8*
// CHECK-DEBUG-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[KMPC_LOC_VOIDPTR]], i8* [[KMPC_DEFAULT_LOC_VOIDPTR]], i64 24, i32 8, i1 false)
// CHECK-DEBUG: store i32 %argc, i32* [[ARGC_ADDR:%.+]],
// CHECK-DEBUG: [[VLA:%.+]] = alloca i32, i64 [[VLA_SIZE:%[^,]+]],
// CHECK-DEBUG: [[KMPC_LOC_PSOURCE_REF:%.+]] = getelementptr inbounds %ident_t, %ident_t* [[LOC_2_ADDR]], i32 0, i32 4
// CHECK-DEBUG-NEXT: store i8* getelementptr inbounds ([{{.+}} x i8], [{{.+}} x i8]* [[LOC1]], i32 0, i32 0), i8** [[KMPC_LOC_PSOURCE_REF]]
// CHECK-DEBUG: call {{.*}}void (%ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%ident_t* [[LOC_2_ADDR]], i32 2, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i64, i32*)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i64 [[VLA_SIZE]], i32* [[VLA]])
// CHECK-DEBUG-NEXT: [[ARGV:%.+]] = load i8**, i8*** {{%[a-z0-9.]+}}
// CHECK-DEBUG-NEXT: [[RET:%.+]] = call i32 [[TMAIN:@.+tmain.+]](i8** [[ARGV]])
// CHECK-DEBUG: ret i32
// CHECK-DEBUG-NEXT: }
// CHECK: define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i{{[0-9]+}}{{.*}} [[VLA_SIZE:%.+]], i32* [[VLA_ADDR:%[^)]+]])
// CHECK-SAME: #[[FN_ATTRS:[0-9]+]]
// CHECK: store i32* [[VLA_ADDR]], i32** [[VLA_PTR_ADDR:%.+]],
// CHECK: [[VLA_REF:%.+]] = load i32*, i32** [[VLA_PTR_ADDR]]
// CHECK: [[VLA_ELEM_REF:%.+]] = getelementptr inbounds i32, i32* [[VLA_REF]], i{{[0-9]+}} 1
// CHECK-NEXT: [[VLA_ELEM:%.+]] = load i32, i32* [[VLA_ELEM_REF]]
// CHECK-NEXT: invoke {{.*}}void [[FOO:@.+foo.+]](i32{{[ ]?[a-z]*}} [[VLA_ELEM]])
// CHECK: ret void
// CHECK: call {{.*}}void @{{.+terminate.*|abort}}(
// CHECK-NEXT: unreachable
// CHECK-NEXT: }
// CHECK-DEBUG: define internal void [[OMP_OUTLINED_DEBUG:@.+]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i64 [[VLA_SIZE:%.+]], i32* [[VLA_ADDR:%[^)]+]])
// CHECK-DEBUG-SAME: #[[FN_ATTRS:[0-9]+]]
// CHECK-DEBUG: store i32* [[VLA_ADDR]], i32** [[VLA_PTR_ADDR:%.+]],
// CHECK-DEBUG: [[VLA_REF:%.+]] = load i32*, i32** [[VLA_PTR_ADDR]]
// CHECK-DEBUG: [[VLA_ELEM_REF:%.+]] = getelementptr inbounds i32, i32* [[VLA_REF]], i64 1
// CHECK-DEBUG-NEXT: [[VLA_ELEM:%.+]] = load i32, i32* [[VLA_ELEM_REF]]
// CHECK-DEBUG-NEXT: invoke void [[FOO:@.+foo.+]](i32 [[VLA_ELEM]])
// CHECK-DEBUG: ret void
Initial support for Win64 SEH IR emission The lowering looks a lot like normal EH lowering, with the exception that the exceptions are caught by executing filter expression code instead of matching typeinfo globals. The filter expressions are outlined into functions which are used in landingpad clauses where typeinfo would normally go. Major aspects that still need work: - Non-call exceptions in __try bodies won't work yet. The plan is to outline the __try block in the frontend to keep things simple. - Filter expressions cannot use local variables until capturing is implemented. - __finally blocks will not run after exceptions. Fixing this requires work in the LLVM SEH preparation pass. The IR lowering looks like this: // C code: bool safe_div(int n, int d, int *r) { __try { *r = normal_div(n, d); } __except(_exception_code() == EXCEPTION_INT_DIVIDE_BY_ZERO) { return false; } return true; } ; LLVM IR: define i32 @filter(i8* %e, i8* %fp) { %ehptrs = bitcast i8* %e to i32** %ehrec = load i32** %ehptrs %code = load i32* %ehrec %matches = icmp eq i32 %code, i32 u0xC0000094 %matches.i32 = zext i1 %matches to i32 ret i32 %matches.i32 } define i1 zeroext @safe_div(i32 %n, i32 %d, i32* %r) { %rr = invoke i32 @normal_div(i32 %n, i32 %d) to label %normal unwind to label %lpad normal: store i32 %rr, i32* %r ret i1 1 lpad: %ehvals = landingpad {i8*, i32} personality i32 (...)* @__C_specific_handler catch i8* bitcast (i32 (i8*, i8*)* @filter to i8*) %ehptr = extractvalue {i8*, i32} %ehvals, i32 0 %sel = extractvalue {i8*, i32} %ehvals, i32 1 %filter_sel = call i32 @llvm.eh.seh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @filter to i8*)) %matches = icmp eq i32 %sel, %filter_sel br i1 %matches, label %eh.except, label %eh.resume eh.except: ret i1 false eh.resume: resume } Reviewers: rjmccall, rsmith, majnemer Differential Revision: http://reviews.llvm.org/D5607 llvm-svn: 226760
2015-01-22 09:36:17 +08:00
// CHECK-DEBUG: call void @{{.+terminate.*|abort}}(
// CHECK-DEBUG-NEXT: unreachable
// CHECK-DEBUG-NEXT: }
// CHECK-DAG: define linkonce_odr {{.*}}void [[FOO]]({{i32[ ]?[a-z]*}} %argc)
// CHECK-DAG: declare {{.*}}void @__kmpc_fork_call(%ident_t*, i32, void (i32*, i32*, ...)*, ...)
// CHECK-DEBUG-DAG: define linkonce_odr void [[FOO]](i32 %argc)
// CHECK-DEBUG-DAG: declare void @__kmpc_fork_call(%ident_t*, i32, void (i32*, i32*, ...)*, ...)
// CHECK-DEBUG-DAG: define internal void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i64 [[VLA_SIZE:%.+]], i32* [[VLA_ADDR:%[^)]+]])
// CHECK-DEBUG-DAG: call void [[OMP_OUTLINED_DEBUG]]
// CHECK: define linkonce_odr {{[a-z\_\b]*[ ]?i32}} [[TMAIN]](i8** %argc)
// CHECK: store i8** %argc, i8*** [[ARGC_ADDR:%.+]],
// 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*, i8***)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i8*** [[ARGC_ADDR]])
// CHECK-NEXT: ret i32 0
// CHECK-NEXT: }
// CHECK-DEBUG: define linkonce_odr i32 [[TMAIN]](i8** %argc)
// CHECK-DEBUG-DAG: [[LOC_2_ADDR:%.+]] = alloca %ident_t
// CHECK-DEBUG: [[KMPC_LOC_VOIDPTR:%.+]] = bitcast %ident_t* [[LOC_2_ADDR]] to i8*
// CHECK-DEBUG-NEXT: [[KMPC_DEFAULT_LOC_VOIDPTR:%.+]] = bitcast %ident_t* [[DEF_LOC_2]] to i8*
// CHECK-DEBUG-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[KMPC_LOC_VOIDPTR]], i8* [[KMPC_DEFAULT_LOC_VOIDPTR]], i64 24, i32 8, i1 false)
// CHECK-DEBUG-NEXT: store i8** %argc, i8*** [[ARGC_ADDR:%.+]],
// CHECK-DEBUG: [[KMPC_LOC_PSOURCE_REF:%.+]] = getelementptr inbounds %ident_t, %ident_t* [[LOC_2_ADDR]], i32 0, i32 4
// CHECK-DEBUG-NEXT: store i8* getelementptr inbounds ([{{.+}} x i8], [{{.+}} x i8]* [[LOC2]], i32 0, i32 0), i8** [[KMPC_LOC_PSOURCE_REF]]
// 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*, i8***)* [[OMP_OUTLINED:@.+]] to void (i32*, i32*, ...)*), i8*** [[ARGC_ADDR]])
// CHECK-DEBUG-NEXT: ret i32 0
// CHECK-DEBUG-NEXT: }
// CHECK: define internal {{.*}}void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i8*** dereferenceable({{4|8}}) %argc)
// CHECK: store i8*** %argc, i8**** [[ARGC_PTR_ADDR:%.+]],
// CHECK: [[ARGC_REF:%.+]] = load i8***, i8**** [[ARGC_PTR_ADDR]]
// CHECK-NEXT: [[ARGC:%.+]] = load i8**, i8*** [[ARGC_REF]]
// CHECK-NEXT: invoke {{.*}}void [[FOO1:@.+foo.+]](i8** [[ARGC]])
// CHECK: ret void
// CHECK: call {{.*}}void @{{.+terminate.*|abort}}(
// CHECK-NEXT: unreachable
// CHECK-NEXT: }
// CHECK-DEBUG: define internal void [[OMP_OUTLINED]](i32* noalias %.global_tid., i32* noalias %.bound_tid., i8*** dereferenceable({{4|8}}) %argc)
// CHECK-DEBUG: store i8*** %argc, i8**** [[ARGC_PTR_ADDR:%.+]],
// CHECK-DEBUG: [[ARGC_REF:%.+]] = load i8***, i8**** [[ARGC_PTR_ADDR]]
// CHECK-DEBUG-NEXT: [[ARGC:%.+]] = load i8**, i8*** [[ARGC_REF]]
// CHECK-DEBUG-NEXT: invoke void [[FOO1:@.+foo.+]](i8** [[ARGC]])
// CHECK-DEBUG: ret void
Initial support for Win64 SEH IR emission The lowering looks a lot like normal EH lowering, with the exception that the exceptions are caught by executing filter expression code instead of matching typeinfo globals. The filter expressions are outlined into functions which are used in landingpad clauses where typeinfo would normally go. Major aspects that still need work: - Non-call exceptions in __try bodies won't work yet. The plan is to outline the __try block in the frontend to keep things simple. - Filter expressions cannot use local variables until capturing is implemented. - __finally blocks will not run after exceptions. Fixing this requires work in the LLVM SEH preparation pass. The IR lowering looks like this: // C code: bool safe_div(int n, int d, int *r) { __try { *r = normal_div(n, d); } __except(_exception_code() == EXCEPTION_INT_DIVIDE_BY_ZERO) { return false; } return true; } ; LLVM IR: define i32 @filter(i8* %e, i8* %fp) { %ehptrs = bitcast i8* %e to i32** %ehrec = load i32** %ehptrs %code = load i32* %ehrec %matches = icmp eq i32 %code, i32 u0xC0000094 %matches.i32 = zext i1 %matches to i32 ret i32 %matches.i32 } define i1 zeroext @safe_div(i32 %n, i32 %d, i32* %r) { %rr = invoke i32 @normal_div(i32 %n, i32 %d) to label %normal unwind to label %lpad normal: store i32 %rr, i32* %r ret i1 1 lpad: %ehvals = landingpad {i8*, i32} personality i32 (...)* @__C_specific_handler catch i8* bitcast (i32 (i8*, i8*)* @filter to i8*) %ehptr = extractvalue {i8*, i32} %ehvals, i32 0 %sel = extractvalue {i8*, i32} %ehvals, i32 1 %filter_sel = call i32 @llvm.eh.seh.typeid.for(i8* bitcast (i32 (i8*, i8*)* @filter to i8*)) %matches = icmp eq i32 %sel, %filter_sel br i1 %matches, label %eh.except, label %eh.resume eh.except: ret i1 false eh.resume: resume } Reviewers: rjmccall, rsmith, majnemer Differential Revision: http://reviews.llvm.org/D5607 llvm-svn: 226760
2015-01-22 09:36:17 +08:00
// CHECK-DEBUG: call void @{{.+terminate.*|abort}}(
// CHECK-DEBUG-NEXT: unreachable
// CHECK-DEBUG-NEXT: }
// CHECK: define linkonce_odr {{.*}}void [[FOO1]](i8** %argc)
// CHECK-DEBUG: define linkonce_odr void [[FOO1]](i8** %argc)
// CHECK: attributes #[[FN_ATTRS]] = {{.+}} nounwind
// CHECK-DEBUG: attributes #[[FN_ATTRS]] = {{.+}} nounwind
#endif