[Support][CachePruning] Disable cache pruning regression fix
borked by: rL284966 (see: https://reviews.llvm.org/D25730).
Previously, Interval was unsigned (see: CachePruning.h), replacing the type with std::chrono::seconds (which is signed) causes a regression in behaviour because the c-api intends negative values to translate to large positive intervals to *effectively* disable the pruning (see comments on: setCachePruningInterval()).
Differential Revision: https://reviews.llvm.org/D41231
llvm-svn: 321077
diff --git a/llvm/tools/llvm-lto/llvm-lto.cpp b/llvm/tools/llvm-lto/llvm-lto.cpp
index 20c6813..7d71a3e 100644
--- a/llvm/tools/llvm-lto/llvm-lto.cpp
+++ b/llvm/tools/llvm-lto/llvm-lto.cpp
@@ -156,6 +156,9 @@
static cl::opt<std::string>
ThinLTOCacheDir("thinlto-cache-dir", cl::desc("Enable ThinLTO caching."));
+static cl::opt<int>
+ ThinLTOCachePruningInterval("thinlto-cache-pruning-interval", cl::desc("Set ThinLTO cache pruning interval."));
+
static cl::opt<std::string> ThinLTOSaveTempsPrefix(
"thinlto-save-temps",
cl::desc("Save ThinLTO temp files using filenames created by adding "
@@ -470,6 +473,7 @@
ThinGenerator.setCodePICModel(getRelocModel());
ThinGenerator.setTargetOptions(Options);
ThinGenerator.setCacheDir(ThinLTOCacheDir);
+ ThinGenerator.setCachePruningInterval(ThinLTOCachePruningInterval);
ThinGenerator.setFreestanding(EnableFreestanding);
// Add all the exported symbols to the table of symbols to preserve.