46 lines · cpp
1// RUN: %clang_cc1 -std=c++1z -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s2 3template<int> struct A {};4template<int ...N> void foldr(A<(N + ...)>);5template<int ...N> void foldl(A<(... + N)>);6template<int ...N> void foldr1(A<(N + ... + 1)>);7template<int ...N> void foldl1(A<(1 + ... + N)>);8void use() {9 foldr<1, 2, 3>({});10 foldl<1, 2, 3>({});11 foldr1<1, 2, 3>({});12 foldl1<1, 2, 3>({});13 // CHECK-DAG: @_Z5foldrIJLi1ELi2ELi3EEEv1AIXfrplT_EE(14 // CHECK-DAG: @_Z5foldlIJLi1ELi2ELi3EEEv1AIXflplT_EE(15 // CHECK-DAG: @_Z6foldr1IJLi1ELi2ELi3EEEv1AIXfRplT_Li1EEE(16 // CHECK-DAG: @_Z6foldl1IJLi1ELi2ELi3EEEv1AIXfLplLi1ET_EE(17}18 19template<int ...N> using Foldr = A<(N + ...)>;20template<int ...N> using Foldl = A<(... + N)>;21template<int ...N> using Foldr1 = A<(N + ... + 1)>;22template<int ...N> using Foldl1 = A<(1 + ... + N)>;23 24template<int ...A> struct Partial {25 template<int ...B> void foldr(Foldr<A..., B..., A..., B...>);26 template<int ...B> void foldl(Foldl<A..., B..., A..., B...>);27 template<int ...B> void foldr1(Foldr1<A..., B..., A..., B...>);28 template<int ...B> void foldl1(Foldl1<A..., B..., A..., B...>);29};30void use(Partial<1, 2> p) {31 p.foldr<3, 4>({});32 p.foldl<3, 4>({});33 p.foldr1<3, 4>({});34 p.foldl1<3, 4>({});35 // CHECK-DAG: @_ZN7PartialIJLi1ELi2EEE5foldrIJLi3ELi4EEEEv1AIXplLi1EplLi2EfRplT_plLi1EplLi2EfrplT_EE(36 // CHECK-DAG: @_ZN7PartialIJLi1ELi2EEE5foldlIJLi3ELi4EEEEv1AIXfLplplplfLplplLi1ELi2ET_Li1ELi2ET_EE37 // CHECK-DAG: @_ZN7PartialIJLi1ELi2EEE6foldr1IJLi3ELi4EEEEv1AIXplLi1EplLi2EfRplT_plLi1EplLi2EfRplT_Li1EEE(38 // CHECK-DAG: @_ZN7PartialIJLi1ELi2EEE6foldl1IJLi3ELi4EEEEv1AIXfLplplplfLplplplLi1ELi1ELi2ET_Li1ELi2ET_EE(39}40 41extern int n;42template<int ...N> void f() {43 (n = ... = N);44}45template void f<>();46