158d72d728
Set the writable and dead_on_unwind attributes for sret arguments. These indicate that the argument points to writable memory (and it's legal to introduce spurious writes to it on entry to the function) and that the argument memory will not be used if the call unwinds. This enables additional MemCpyOpt/DSE/LICM optimizations.
135 lines
4.8 KiB
Plaintext
135 lines
4.8 KiB
Plaintext
// RUN: rm -rf %t
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -x objective-c++ -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs -verify %s -Wno-objc-root-class
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -x objective-c++ -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs -emit-llvm %s -o - -Wno-objc-root-class | FileCheck %s
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// expected-no-diagnostics
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// REQUIRES: x86-registered-target
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@import templates_left;
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void testInlineRedeclEarly() {
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// instantiate definition now, we'll add another declaration in _right.
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OutOfLineInline<int>().h();
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}
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@import templates_right;
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// CHECK-DAG: @list_left ={{.*}} global %[[LIST:.*]] { ptr null, i32 8 }, align 8
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// CHECK-DAG: @list_right ={{.*}} global %[[LIST]] { ptr null, i32 12 }, align 8
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// CHECK-DAG: @__const._Z15testMixedStructv.l = {{.*}} constant %[[LIST]] { ptr null, i32 1 }, align 8
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// CHECK-DAG: @__const._Z15testMixedStructv.r = {{.*}} constant %[[LIST]] { ptr null, i32 2 }, align 8
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// CHECK-DAG: @_ZN29WithUndefinedStaticDataMemberIA_iE9undefinedE = external global
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void testTemplateClasses() {
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Vector<int> vec_int;
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vec_int.push_back(0);
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List<bool> list_bool;
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list_bool.push_back(false);
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N::Set<char> set_char;
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set_char.insert('A');
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static_assert(sizeof(List<long>) == sizeof(List<short>), "");
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List<double> list_double;
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list_double.push_back(0.0);
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}
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void testPendingInstantiations() {
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// CHECK: call {{.*pendingInstantiationEmit}}
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// CHECK: call {{.*pendingInstantiationEmit}}
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// CHECK: define {{.*pendingInstantiationEmit.*[(]i}}
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// CHECK: define {{.*pendingInstantiationEmit.*[(]double}}
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triggerPendingInstantiation();
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triggerPendingInstantiationToo();
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}
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void testRedeclDefinition() {
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// CHECK: define {{.*redeclDefinitionEmit}}
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redeclDefinitionEmit();
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}
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void testInlineRedecl() {
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outOfLineInlineUseLeftF();
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outOfLineInlineUseRightG();
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outOfLineInlineUseRightF();
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outOfLineInlineUseLeftG();
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}
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// CHECK-NOT: @_ZN21ExplicitInstantiationILb0ELb0EE1fEv(
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// CHECK: declare {{.*}}@_ZN21ExplicitInstantiationILb1ELb0EE1fEv(
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// CHECK: define {{.*}}@_ZN21ExplicitInstantiationILb1ELb1EE1fEv(
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// CHECK-NOT: @_ZN21ExplicitInstantiationILb0ELb0EE1fEv(
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// These three are all the same type.
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typedef OuterIntInner_left OuterIntInner;
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typedef OuterIntInner_right OuterIntInner;
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typedef Outer<int>::Inner OuterIntInner;
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// CHECK: call {{.*pendingInstantiation}}
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// CHECK: call {{.*redeclDefinitionEmit}}
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static_assert(size_left == size_right, "same field both ways");
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void useListInt(List<int> &);
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// CHECK-LABEL: define{{.*}} i32 @_Z15testMixedStructv(
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unsigned testMixedStruct() {
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// CHECK: %[[l:.*]] = alloca %[[ListInt:[^ ]*]], align 8
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// CHECK: %[[r:.*]] = alloca %[[ListInt]], align 8
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// CHECK: call {{.*}}memcpy{{.*}}(ptr align {{[0-9]+}} %{{.*}}, ptr align {{[0-9]+}} @__const._Z15testMixedStructv.l, i64 16,
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ListInt_left l{0, 1};
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// CHECK: call {{.*}}memcpy{{.*}}(ptr align {{[0-9]+}} %{{.*}}, ptr align {{[0-9]+}} @__const._Z15testMixedStructv.r, i64 16,
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ListInt_right r{0, 2};
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// CHECK: call void @_Z10useListIntR4ListIiE(ptr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %[[l]])
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useListInt(l);
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// CHECK: call void @_Z10useListIntR4ListIiE(ptr noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %[[r]])
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useListInt(r);
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// CHECK: load i32, ptr getelementptr inbounds (i8, ptr @list_left, i64 8)
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// CHECK: load i32, ptr getelementptr inbounds (i8, ptr @list_right, i64 8)
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return list_left.*size_right + list_right.*size_left;
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}
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template<typename T> struct MergePatternDecl {
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typedef int Type;
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void f(Type);
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};
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template<typename T> void MergePatternDecl<T>::f(Type type) {}
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// CHECK: define {{.*}}@_ZN21ExplicitInstantiationILb0ELb1EE1fEv(
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template struct ExplicitInstantiation<false, true>;
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template struct ExplicitInstantiation<true, true>;
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void testDelayUpdatesImpl() { testDelayUpdates<int>(); }
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void testStaticDataMember() {
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WithUndefinedStaticDataMember<int[]> load_it;
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// CHECK-LABEL: define linkonce_odr noundef ptr @_Z23getStaticDataMemberLeftv(
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// CHECK: ret ptr @_ZN29WithUndefinedStaticDataMemberIA_iE9undefinedE
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(void) getStaticDataMemberLeft();
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// CHECK-LABEL: define linkonce_odr noundef ptr @_Z24getStaticDataMemberRightv(
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// CHECK: ret ptr @_ZN29WithUndefinedStaticDataMemberIA_iE9undefinedE
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(void) getStaticDataMemberRight();
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}
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void testWithAttributes() {
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auto a = make_with_attributes_left();
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auto b = make_with_attributes_right();
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static_assert(alignof(decltype(a)) == 2, "");
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static_assert(alignof(decltype(b)) == 2, "");
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}
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// Check that returnNonTrivial doesn't return Class0<S0> directly in registers.
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// CHECK: declare void @_Z16returnNonTrivialv(ptr dead_on_unwind writable sret(%struct.Class0) align 8)
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@import template_nontrivial0;
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@import template_nontrivial1;
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S1::S1() : a(returnNonTrivial()) {
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}
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