30 lines · cpp
1// RUN: %clang_cc1 -std=c++1y -triple i686-pc-windows-msvc -emit-llvm %s -o - | FileCheck %s2//CHECK: %[[A_LAMBDA:.*]] = type { %struct.A }3//CHECK: %[[B_LAMBDA:.*]] = type { ptr }4struct A {5 double a = 111;6 auto foo() { return [*this] { return a; }; }7};8 9namespace ns1 {10int X = A{}.foo()();11} //end ns112 13//CHECK: @"?foo@A@@QAE?A?<auto>@@XZ"(ptr {{[^,]*}} %this, ptr dead_on_unwind noalias writable sret(%class.anon) align 8 %[[A_LAMBDA_RETVAL:.*]])14// get the first object with the closure type, which is of type 'struct.A'15//CHECK: %[[I0:.+]] = getelementptr inbounds nuw %[[A_LAMBDA]], ptr %[[A_LAMBDA_RETVAL]], i32 0, i32 016// copy the contents ...17//CHECK: call void @llvm.memcpy.p0.p0.i32(ptr align 8 %[[I0]], ptr align 8 %this1, i32 8, i1 false)18 19struct B {20 double b = 222;21 auto bar() { return [this] { return b; }; };22};23 24namespace ns2 {25int X = B{}.bar()();26}27//CHECK: @"?bar@B@@QAE?A?<auto>@@XZ"(ptr {{[^,]*}} %this, ptr dead_on_unwind noalias writable sret(%class.anon.0) align 4 %agg.result)28//CHECK: %[[I20:.+]] = getelementptr inbounds nuw %class.anon.0, ptr %agg.result, i32 0, i32 029//CHECK: store ptr %this1, ptr %[[I20]], align 430