From 7fe28f81dbac2aac6789f1519d41d739636809c2 Mon Sep 17 00:00:00 2001 From: Mehdi Amini Date: Sat, 8 Oct 2016 04:44:18 +0000 Subject: ThinLTO: handles modules with empty summaries We need to add an entry in the combined-index for modules that have a hash but otherwise empty summary, this is needed so that we can get the hash for the module. Also, if no entry is present in the combined index for a module, we need to skip it when trying to compute a cache entry. Differential Revision: https://reviews.llvm.org/D25300 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283654 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/LTO/ThinLTOCodeGenerator.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib/LTO/ThinLTOCodeGenerator.cpp') diff --git a/lib/LTO/ThinLTOCodeGenerator.cpp b/lib/LTO/ThinLTOCodeGenerator.cpp index f4232dc2f89..8afe13d8e16 100644 --- a/lib/LTO/ThinLTOCodeGenerator.cpp +++ b/lib/LTO/ThinLTOCodeGenerator.cpp @@ -234,6 +234,10 @@ public: if (CachePath.empty()) return; + if (!Index.modulePaths().count(ModuleID)) + // The module does not have an entry, it can't have a hash at all + return; + // Compute the unique hash for this entry // This is based on the current compiler version, the module itself, the // export list, the hash for every single module in the import list, the -- cgit v1.2.3