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Validate user headers even if -fmodules-validate-once-per-build-session 

is enabled. Unlike system headers, we want to be more careful about
modifications to user headers, because it's still easy to edit a header
while you're building.

llvm-svn: 221634
This commit is contained in:
Ben Langmuir 2014-11-10 22:13:10 +00:00
parent 45f4f8bd7e
commit acb803e807
2 changed files with 23 additions and 10 deletions
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5
clang/lib/Serialization/ASTReader.cpp
View File

@ -2302,9 +2302,7 @@ ASTReader::ReadControlBlock(ModuleFile &F,
// All user input files reside at the index range [0, NumUserInputs), and
// system input files reside at [NumUserInputs, NumInputs).
if (!DisableValidation &&
(ValidateSystemInputs || !HSOpts.ModulesValidateOncePerBuildSession ||
F.InputFilesValidationTimestamp <= HSOpts.BuildSessionTimestamp)) {
if (!DisableValidation) {
bool Complain = (ClientLoadCapabilities & ARR_OutOfDate) == 0;
// If we are reading a module, we will create a verification timestamp,
@ -2314,6 +2312,7 @@ ASTReader::ReadControlBlock(ModuleFile &F,
unsigned N = NumUserInputs;
if (ValidateSystemInputs ||
(HSOpts.ModulesValidateOncePerBuildSession &&
F.InputFilesValidationTimestamp <= HSOpts.BuildSessionTimestamp &&
F.Kind == MK_ImplicitModule))
N = NumInputs;

28
clang/test/Modules/fmodules-validate-once-per-build-session.c
View File

@ -6,39 +6,53 @@
// RUN: mkdir -p %t/modules-to-compare
// ===
// Create a module with system headers.
// Create a module. We will use -I or -isystem to determine whether to treat
// foo.h as a system header.
// RUN: echo 'void meow(void);' > %t/Inputs/foo.h
// RUN: echo 'module Foo [system] { header "foo.h" }' > %t/Inputs/module.map
// RUN: echo 'module Foo { header "foo.h" }' > %t/Inputs/module.map
// ===
// Compile the module.
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -isystem %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache-user -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: ls -R %t/modules-cache | grep Foo.pcm.timestamp
// RUN: ls -R %t/modules-cache-user | grep Foo.pcm.timestamp
// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-before.pcm
// RUN: cp %t/modules-cache-user/Foo.pcm %t/modules-to-compare/Foo-before-user.pcm
// ===
// Use it, and make sure that we did not recompile it.
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -isystem %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache-user -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: ls -R %t/modules-cache | grep Foo.pcm.timestamp
// RUN: ls -R %t/modules-cache-user | grep Foo.pcm.timestamp
// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm
// RUN: cp %t/modules-cache-user/Foo.pcm %t/modules-to-compare/Foo-after-user.pcm
// RUN: diff %t/modules-to-compare/Foo-before.pcm %t/modules-to-compare/Foo-after.pcm
// RUN: diff %t/modules-to-compare/Foo-before-user.pcm %t/modules-to-compare/Foo-after-user.pcm
// ===
// Change the sources.
// RUN: echo 'void meow2(void);' > %t/Inputs/foo.h
// ===
// Use the module, and make sure that we did not recompile it, even though the sources changed.
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// Use the module, and make sure that we did not recompile it if foo.h is a
// system header, even though the sources changed.
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -isystem %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache-user -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1390000000 -fmodules-validate-once-per-build-session %s
// RUN: ls -R %t/modules-cache | grep Foo.pcm.timestamp
// RUN: ls -R %t/modules-cache-user | grep Foo.pcm.timestamp
// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm
// RUN: cp %t/modules-cache-user/Foo.pcm %t/modules-to-compare/Foo-after-user.pcm
// RUN: diff %t/modules-to-compare/Foo-before.pcm %t/modules-to-compare/Foo-after.pcm
// When foo.h is a user header, we will always validate it.
// RUN: not diff %t/modules-to-compare/Foo-before-user.pcm %t/modules-to-compare/Foo-after-user.pcm
// ===
// Recompile the module if the today's date is before 01 January 2030.
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -I %t/Inputs -fbuild-session-timestamp=1893456000 -fmodules-validate-once-per-build-session %s
// RUN: %clang_cc1 -cc1 -fmodules -fdisable-module-hash -fmodules-cache-path=%t/modules-cache -fsyntax-only -isystem %t/Inputs -fbuild-session-timestamp=1893456000 -fmodules-validate-once-per-build-session %s
// RUN: ls -R %t/modules-cache | grep Foo.pcm.timestamp
// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm