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.
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// Test the output from -module-file-info about C++20 Modules
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// can reflect macros definitions correctly.
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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 -emit-header-unit -xc++-user-header %t/foo.h -o %t/foo.pcm
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// RUN: %clang_cc1 -module-file-info %t/foo.pcm | FileCheck %t/foo.h
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//
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// RUN: %clang_cc1 -std=c++20 -emit-header-unit -xc++-user-header %t/include_foo.h -o %t/include_foo.pcm
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// RUN: %clang_cc1 -module-file-info %t/include_foo.pcm | FileCheck %t/include_foo.h
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// RUN: %clang_cc1 -std=c++20 -emit-header-unit -xc++-user-header -fmodule-file=%t/foo.pcm \
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// RUN: %t/import_foo.h -o %t/import_foo.pcm
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// RUN: %clang_cc1 -module-file-info %t/import_foo.pcm | FileCheck %t/import_foo.h
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//
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// RUN: %clang_cc1 -std=c++20 %t/named_module.cppm -emit-module-interface -o %t/M.pcm
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// RUN: %clang_cc1 -module-file-info %t/M.pcm | FileCheck %t/named_module.cppm
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// RUN: %clang_cc1 -std=c++20 %t/named_module.cppm -emit-reduced-module-interface -o %t/M.pcm
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// RUN: %clang_cc1 -module-file-info %t/M.pcm | FileCheck %t/named_module.cppm
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//--- foo.h
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#pragma once
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#define FOO
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#define CONSTANT 43
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#define FUNC_Macro(X) (X+1)
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#define TO_BE_UNDEF
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#undef TO_BE_UNDEF
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#ifndef FOO
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#define CONDITIONAL_DEF
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#endif
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#define REDEFINE
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#define REDEFINE
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// CHECK: Macro Definitions:
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// CHECK-DAG: REDEFINE
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// CHECK-DAG: FUNC_Macro
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// CHECK-DAG: CONSTANT
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// CHECK-DAG: FOO
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// CHECK-NEXT: ===
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//--- include_foo.h
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#include "foo.h"
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#undef REDEFINE
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// CHECK: Macro Definitions:
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// CHECK-DAG: CONSTANT
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// CHECK-DAG: FUNC_Macro
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// CHECK-DAG: FOO
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// CHECK-NEXT: ===
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//--- import_foo.h
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import "foo.h";
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#undef REDEFINE
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// CHECK: Macro Definitions:
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// CHECK-DAG: CONSTANT
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// CHECK-DAG: FUNC_Macro
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// CHECK-DAG: FOO
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// CHECK-NEXT: ===
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//--- named_module.cppm
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module;
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#include "foo.h"
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export module M;
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#define M_Module 43
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// CHECK-NOT: Macro Definitions:
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