60fa28882e
Change ASTFileSignature from a random 32-bit number to the hash of the
PCM content.
- Move definition ASTFileSignature to Basic/Module.h so Module and
ASTSourceDescriptor can use it.
- Change the signature from uint64_t to std::array<uint32_t,5>.
- Stop using (saving/reading) the size and modification time of PCM
files when there is a valid SIGNATURE.
- Add UNHASHED_CONTROL_BLOCK, and use it to store the SIGNATURE record
and other records that shouldn't affect the hash. Because implicit
modules reuses the same file for multiple levels of -Werror, this
includes DIAGNOSTIC_OPTIONS and DIAG_PRAGMA_MAPPINGS.
This helps to solve a PCH + implicit Modules dependency issue: PCH files
are handled by the external build system, whereas implicit modules are
handled by internal compiler build system. This prevents invalidating a
PCH when the compiler overwrites a PCM file with the same content
(modulo the diagnostic differences).
Design and original patch by Manman Ren!
llvm-svn: 297655
51 lines
2.0 KiB
Matlab
51 lines
2.0 KiB
Matlab
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@import DependsOnModule;
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// RUN: rm -rf %t %t-obj
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// RUN: %clang_cc1 -w -Wunused -fmodules -fmodule-format=raw -fimplicit-module-maps -fdisable-module-hash -fmodules-cache-path=%t -F %S/Inputs -DBLARG -DWIBBLE=WOBBLE -fmodule-feature myfeature %s
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// RUN: %clang_cc1 -module-file-info %t/DependsOnModule.pcm | FileCheck %s
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// RUN: %clang_cc1 -module-file-info %t/DependsOnModule.pcm | FileCheck %s --check-prefix=RAW
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// RUN: %clang_cc1 -w -Wunused -fmodules -fmodule-format=obj -fimplicit-module-maps -fdisable-module-hash -fmodules-cache-path=%t-obj -F %S/Inputs -DBLARG -DWIBBLE=WOBBLE -fmodule-feature myfeature %s
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// RUN: %clang_cc1 -module-file-info %t-obj/DependsOnModule.pcm | FileCheck %s
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// RUN: %clang_cc1 -module-file-info %t-obj/DependsOnModule.pcm | FileCheck %s --check-prefix=OBJ
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// RAW: Module format: raw
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// OBJ: Module format: obj
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// CHECK: Generated by this Clang:
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// CHECK: Module name: DependsOnModule
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// CHECK: Module map file: {{.*}}DependsOnModule.framework{{[/\\]}}module.map
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// CHECK: Language options:
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// CHECK: C99: Yes
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// CHECK: Objective-C 1: Yes
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// CHECK: modules extension to C: Yes
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// CHECK: Module features:
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// CHECK: myfeature
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// CHECK: Target options:
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// CHECK: Triple:
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// CHECK: CPU:
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// CHECK: ABI:
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// CHECK: Header search options:
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// CHECK: System root [-isysroot=]: '/'
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// CHECK: Resource dir [ -resource-dir=]: '{{.*}}clang{{.*}}'
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// CHECK: Use builtin include directories [-nobuiltininc]: Yes
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// CHECK: Use standard system include directories [-nostdinc]: No
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// CHECK: Use standard C++ include directories [-nostdinc++]: Yes
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// CHECK: Use libc++ (rather than libstdc++) [-stdlib=]:
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// CHECK: Preprocessor options:
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// CHECK: Uses compiler/target-specific predefines [-undef]: Yes
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// CHECK: Uses detailed preprocessing record (for indexing): No
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// CHECK: Predefined macros:
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// CHECK: -DBLARG
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// CHECK: -DWIBBLE=WOBBLE
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// CHECK: Diagnostic options:
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// CHECK: IgnoreWarnings: Yes
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// CHECK: Diagnostic flags:
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// CHECK: -Wunused
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