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.
177 lines
4.7 KiB
C++
177 lines
4.7 KiB
C++
// 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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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu1.cpp \
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// RUN: -o %t/B.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu2.cpp \
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// RUN: -o %t/C.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu3.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/AOK1.pcm
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu4.cpp \
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// RUN: -fmodule-file=AOK1=%t/AOK1.pcm -fmodule-file=B=%t/B.pcm \
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// RUN: -fmodule-file=C=%t/C.pcm -o %t/tu_3.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu5.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/BC.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu6.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/tu_5.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu7.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/D.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu8.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/D.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu9.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/tu_8.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/import-diags-tu10.cpp \
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// RUN: -o %t/B.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -emit-obj %t/import-diags-tu11.cpp \
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// RUN: -fmodule-file=C=%t/C.pcm -o %t/impl.o
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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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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu1.cpp \
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// RUN: -o %t/B.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu2.cpp \
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// RUN: -o %t/C.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu3.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/AOK1.pcm
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu4.cpp \
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// RUN: -fmodule-file=AOK1=%t/AOK1.pcm -fmodule-file=B=%t/B.pcm \
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// RUN: -fmodule-file=C=%t/C.pcm -o %t/tu_3.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu5.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/BC.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu6.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -fmodule-file=C=%t/C.pcm -o %t/tu_5.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu7.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/D.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu8.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/D.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -S %t/import-diags-tu9.cpp \
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// RUN: -fmodule-file=B=%t/B.pcm -o %t/tu_8.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/import-diags-tu10.cpp \
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// RUN: -o %t/B.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -emit-obj %t/import-diags-tu11.cpp \
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// RUN: -fmodule-file=C=%t/C.pcm -o %t/impl.o
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// Test diagnostics for incorrect module import sequences.
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//--- import-diags-tu1.cpp
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export module B;
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int foo ();
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// expected-no-diagnostics
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//--- import-diags-tu2.cpp
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export module C;
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int bar ();
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// expected-no-diagnostics
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//--- import-diags-tu3.cpp
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export module AOK1;
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import B;
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export import C;
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export int theAnswer ();
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// expected-no-diagnostics
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//--- import-diags-tu4.cpp
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module;
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module AOK1;
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export import C; // expected-error {{export declaration can only be used within a module purview}}
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int theAnswer () { return 42; }
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//--- import-diags-tu5.cpp
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export module BC;
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export import B;
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int foo () { return 10; }
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import C; // expected-error {{imports must immediately follow the module declaration}}
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//--- import-diags-tu6.cpp
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module B; // implicitly imports B.
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int foo () { return 10; }
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import C; // expected-error {{imports must immediately follow the module declaration}}
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//--- import-diags-tu7.cpp
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module;
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// We can only have preprocessor directives here, which permits
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// header units (include-translated or not) and named modules.
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import B;
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export module D;
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int delta ();
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// expected-no-diagnostics
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//--- import-diags-tu8.cpp
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export module D;
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int delta ();
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module :private;
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import B; // expected-error {{imports must immediately follow the module declaration}}
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//--- import-diags-tu9.cpp
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module B;
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import B; // expected-error {{import of module 'B' appears within its own implementation}}
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//--- import-diags-tu10.cpp
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export module B;
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import B; // expected-error {{import of module 'B' appears within its own interface}}
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//--- import-diags-tu11.cpp
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int x;
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import C;
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int baz() { return 6174; }
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// expected-no-diagnostics
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