Handle calls and invokes in GlobalStatus.
This patch teaches GlobalStatus to analyze a call that uses the global value as
a callee, not as an argument.
With this change internalize call handle the common use of linkonce_odr
functions. This reduces the number of linkonce_odr functions in a LTO build of
clang (checked with the emit-llvm gold plugin option) from 1730 to 60.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/GlobalStatus.cpp b/lib/Transforms/Utils/GlobalStatus.cpp
index 8fb79aa..5f0a563 100644
--- a/lib/Transforms/Utils/GlobalStatus.cpp
+++ b/lib/Transforms/Utils/GlobalStatus.cpp
@@ -11,6 +11,7 @@
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/Support/CallSite.h"
#include "llvm/Transforms/Utils/GlobalStatus.h"
using namespace llvm;
@@ -148,6 +149,10 @@
if (MSI->isVolatile())
return true;
GS.StoredType = GlobalStatus::Stored;
+ } else if (ImmutableCallSite C = I) {
+ if (!C.isCallee(UI))
+ return true;
+ GS.IsLoaded = true;
} else {
return true; // Any other non-load instruction might take address!
}