Vendor import of clang RELEASE_350/final tag r216957 (effectively, 3.5.0 release):

https://llvm.org/svn/llvm-project/cfe/tags/RELEASE_350/final@216957

1 files changed, 45 insertions, 0 deletions

diff --git a/test/Modules/fmodules-validate-once-per-build-session.c b/test/Modules/fmodules-validate-once-per-build-session.c
new file mode 100644
index 0000000..346d5a7
--- /dev/null
+++ b/test/Modules/fmodules-validate-once-per-build-session.c
@@ -0,0 +1,45 @@
+#include "foo.h"
+
+// Clear the module cache.
+// RUN: rm -rf %t
+// RUN: mkdir -p %t/Inputs
+// RUN: mkdir -p %t/modules-to-compare
+
+// ===
+// Create a module with system headers.
+// RUN: echo 'void meow(void);' > %t/Inputs/foo.h
+// RUN: echo 'module Foo [system] { 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: ls -R %t/modules-cache | grep Foo.pcm.timestamp
+// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-before.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: ls -R %t/modules-cache | grep Foo.pcm.timestamp
+// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm
+
+// RUN: diff %t/modules-to-compare/Foo-before.pcm %t/modules-to-compare/Foo-after.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
+// RUN: ls -R %t/modules-cache | grep Foo.pcm.timestamp
+// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm
+
+// RUN: diff %t/modules-to-compare/Foo-before.pcm %t/modules-to-compare/Foo-after.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: ls -R %t/modules-cache | grep Foo.pcm.timestamp
+// RUN: cp %t/modules-cache/Foo.pcm %t/modules-to-compare/Foo-after.pcm
+
+// RUN: not diff %t/modules-to-compare/Foo-before.pcm %t/modules-to-compare/Foo-after.pcm