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-rw-r--r--lib/Transforms/IPO/GlobalDCE.cpp12
1 files changed, 4 insertions, 8 deletions
diff --git a/lib/Transforms/IPO/GlobalDCE.cpp b/lib/Transforms/IPO/GlobalDCE.cpp
index c13a99853e..e025813fd0 100644
--- a/lib/Transforms/IPO/GlobalDCE.cpp
+++ b/lib/Transforms/IPO/GlobalDCE.cpp
@@ -26,7 +26,6 @@ using namespace llvm;
namespace {
Statistic<> NumFunctions("globaldce","Number of functions removed");
Statistic<> NumVariables("globaldce","Number of global variables removed");
- Statistic<> NumGVs("globaldce", "Number of global values removed");
struct GlobalDCE : public Pass {
// run - Do the GlobalDCE pass on the specified module, optionally updating
@@ -171,13 +170,10 @@ void GlobalDCE::MarkUsedGlobalsAsNeeded(Constant *C) {
// might make it deader.
//
bool GlobalDCE::RemoveUnusedGlobalValue(GlobalValue &GV) {
- for (Value::use_iterator I = GV.use_begin(), E = GV.use_end(); I != E; ++I)
- if (GlobalValue* User = dyn_cast<GlobalValue>(*I))
- if (User->removeDeadConstantUsers()) { // Only if unreferenced...
- ++NumGVs;
- }
- return false;
- }
+ if (GV.use_empty()) return false;
+ GV.removeDeadConstantUsers();
+ return GV.use_empty();
+}
// SafeToDestroyConstant - It is safe to destroy a constant iff it is only used
// by constants itself. Note that constants cannot be cyclic, so this test is