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authorLang Hames <lhames@gmail.com>2014-01-09 05:24:05 +0000
committerLang Hames <lhames@gmail.com>2014-01-09 05:24:05 +0000
commit4442b6ec3aa660489d08bbc3889666b519b1d062 (patch)
treec0a03c7bb5878b7f24255c8643b03cce424cbcb4 /tools/lli
parent5f0929577b652b74fc0caab08b5beb5563c32e50 (diff)
Add an "-object-cache-dir=<string>" option to LLI. This option specifies the
root path to which object files managed by the LLIObjectCache instance should be written. This option defaults to "", in which case objects are cached in the same directory as the bitcode they are derived from. The load-object-a.ll test has been rewritten to use this option to support testing in environments where the test directory is not writable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198852 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lli')
-rw-r--r--tools/lli/lli.cpp30
1 files changed, 23 insertions, 7 deletions
diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index 62e232ad68e..5694715d128 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -153,10 +153,16 @@ namespace {
cl::opt<bool>
EnableCacheManager("enable-cache-manager",
- cl::desc("Use cache manager to save/load mdoules."),
+ cl::desc("Use cache manager to save/load mdoules"),
cl::init(false));
cl::opt<std::string>
+ ObjectCacheDir("object-cache-dir",
+ cl::desc("Directory to store cached object files "
+ "(must be user writable)"),
+ cl::init(""));
+
+ cl::opt<std::string>
FakeArgv0("fake-argv0",
cl::desc("Override the 'argv[0]' value passed into the executing"
" program"), cl::value_desc("executable"));
@@ -240,13 +246,19 @@ namespace {
//===----------------------------------------------------------------------===//
// Object cache
//
-// This object cache implementation writes cached objects to disk using a
-// filename provided in the module descriptor and tries to load a saved object
-// using that filename if the file exists.
+// This object cache implementation writes cached objects to disk to the
+// directory specified by CacheDir, using a filename provided in the module
+// descriptor. The cache tries to load a saved object using that path if the
+// file exists. CacheDir defaults to "", in which case objects are cached
+// alongside their originating bitcodes.
//
class LLIObjectCache : public ObjectCache {
public:
- LLIObjectCache() { }
+ LLIObjectCache(const std::string& CacheDir) : CacheDir(CacheDir) {
+ // Add trailing '/' to cache dir if necessary.
+ if (!this->CacheDir.empty() && this->CacheDir.back() != '/')
+ this->CacheDir += '/';
+ }
virtual ~LLIObjectCache() {}
virtual void notifyObjectCompiled(const Module *M, const MemoryBuffer *Obj) {
@@ -255,6 +267,8 @@ public:
if (!getCacheFilename(ModuleID, CacheName))
return;
std::string errStr;
+ if (!CacheDir.empty()) // Create user-defined cache dir.
+ sys::fs::create_directories(CacheName.substr(0, CacheName.rfind('/')));
raw_fd_ostream outfile(CacheName.c_str(), errStr, sys::fs::F_Binary);
outfile.write(Obj->getBufferStart(), Obj->getBufferSize());
outfile.close();
@@ -279,12 +293,14 @@ public:
}
private:
+ std::string CacheDir;
+
bool getCacheFilename(const std::string &ModID, std::string &CacheName) {
std::string Prefix("file:");
size_t PrefixLength = Prefix.length();
if (ModID.substr(0, PrefixLength) != Prefix)
return false;
- CacheName = ModID.substr(PrefixLength);
+ CacheName = CacheDir + ModID.substr(PrefixLength);
size_t pos = CacheName.rfind('.');
CacheName.replace(pos, CacheName.length() - pos, ".o");
return true;
@@ -476,7 +492,7 @@ int main(int argc, char **argv, char * const *envp) {
}
if (EnableCacheManager) {
- CacheManager = new LLIObjectCache;
+ CacheManager = new LLIObjectCache(ObjectCacheDir);
EE->setObjectCache(CacheManager);
}