da00c60dae
Close https://github.com/llvm/llvm-project/issues/71034 See https://discourse.llvm.org/t/rfc-c-20-modules-introduce-thin-bmi-and-decls-hash/74755 This patch introduces reduced BMI, which doesn't contain the definitions of functions and variables if its definitions won't contribute to the ABI. Testing is a big part of the patch. We want to make sure the reduced BMI contains the same behavior with the existing and relatively stable fatBMI. This is pretty helpful for further reduction. The user interfaces part it left to following patches to ease the reviewing.
121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
// Test case from https://github.com/llvm/llvm-project/issues/60036
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//
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 %t/a.cppm -emit-module-interface -o %t/a.pcm
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// RUN: %clang_cc1 -std=c++20 %t/b.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/b.pcm
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// RUN: %clang_cc1 -std=c++20 %t/c.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/c.pcm
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// RUN: %clang_cc1 -std=c++20 %t/d.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/d.pcm
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// RUN: %clang_cc1 -std=c++20 %t/e.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/e.pcm
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// RUN: %clang_cc1 -std=c++20 %t/f.cppm -emit-module-interface -fprebuilt-module-path=%t -o %t/f.pcm
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// RUN: %clang_cc1 -std=c++20 %t/g.cppm -fprebuilt-module-path=%t -verify -fsyntax-only
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//
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// Tests that the behavior is fine with specifying module file with `-fmodule-file`.
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// RUN: %clang_cc1 -std=c++20 %t/a.cppm -emit-module-interface -o %t/a.pcm
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// RUN: %clang_cc1 -std=c++20 %t/b.cppm -emit-module-interface -fmodule-file=a=%t/a.pcm -o %t/b.pcm
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// RUN: %clang_cc1 -std=c++20 %t/c.cppm -emit-module-interface -fmodule-file=a=%t/a.pcm -o %t/c.pcm
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// RUN: %clang_cc1 -std=c++20 %t/d.cppm -emit-module-interface -o %t/d.pcm
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// RUN: %clang_cc1 -std=c++20 %t/e.cppm -emit-module-interface -fmodule-file=a=%t/a.pcm -fmodule-file=b=%t/b.pcm \
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// RUN: -fmodule-file=c=%t/c.pcm -fmodule-file=d=%t/d.pcm -o %t/e.pcm
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// RUN: %clang_cc1 -std=c++20 %t/f.cppm -emit-module-interface -fmodule-file=a=%t/a.pcm -fmodule-file=b=%t/b.pcm -fmodule-file=c=%t/c.pcm -fmodule-file=d=%t/d.pcm -o %t/f.pcm
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// RUN: %clang_cc1 -std=c++20 %t/g.cppm -fmodule-file=a=%t/a.pcm -fmodule-file=b=%t/b.pcm \
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// RUN: -fmodule-file=c=%t/c.pcm -fmodule-file=d=%t/d.pcm -fmodule-file=e=%t/e.pcm \
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// RUN: -fmodule-file=f=%t/f.pcm -verify -fsyntax-only
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// Test again with reduced BMI
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 %t/a.cppm -emit-reduced-module-interface -o %t/a.pcm
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// RUN: %clang_cc1 -std=c++20 %t/b.cppm -emit-reduced-module-interface -fprebuilt-module-path=%t -o %t/b.pcm
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// RUN: %clang_cc1 -std=c++20 %t/c.cppm -emit-reduced-module-interface -fprebuilt-module-path=%t -o %t/c.pcm
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// RUN: %clang_cc1 -std=c++20 %t/d.cppm -emit-reduced-module-interface -fprebuilt-module-path=%t -o %t/d.pcm
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// RUN: %clang_cc1 -std=c++20 %t/e.cppm -emit-reduced-module-interface -fprebuilt-module-path=%t -o %t/e.pcm
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// RUN: %clang_cc1 -std=c++20 %t/f.cppm -emit-reduced-module-interface -fprebuilt-module-path=%t -o %t/f.pcm
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// RUN: %clang_cc1 -std=c++20 %t/g.cppm -fprebuilt-module-path=%t -verify -fsyntax-only
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//--- a.cppm
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export module a;
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export template<typename>
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struct a;
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template<typename T>
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struct a<T &> {
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using type = char;
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};
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//--- b.cppm
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export module b;
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import a;
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typename a<char &>::type;
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//--- c.cppm
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export module c;
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import a;
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typename a<char &>::type;
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//--- d.cppm
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export module d;
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export template<typename>
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struct d {
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d() {}
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explicit d(int) requires(true) {}
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d(auto &&) {}
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};
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//--- e.cppm
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export module e;
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import d;
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auto r = d<int>();
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//--- f.cppm
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export module f;
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import a;
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import b;
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import c;
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import d;
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template<typename T>
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struct array {
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friend void fr(array<T> const &) {
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}
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};
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array() -> array<typename a<char &>::type>;
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struct wrap {
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d<int> m;
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};
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template<typename T>
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int f1(T) {
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return 1;
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}
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void f2() {
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d<int> view;
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int x = f1(view);
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typename a<decltype([x]{}) &>::type;
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wrap w;
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}
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//--- g.cppm
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// expected-no-diagnostics
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export module g;
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import e;
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import f;
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