When determining if we can fold (x >> C1) << C2, the bits that we need to verify...

[oota-llvm.git] / lib / Analysis / CaptureTracking.cpp

diff --git a/lib/Analysis/CaptureTracking.cpp b/lib/Analysis/CaptureTracking.cpp
index 8767c1814172fbcd30755070f673ee487284791d..42a54d9d1eb3adba766363cf2ef38765a12055b9 100644 (file)
--- a/lib/Analysis/CaptureTracking.cpp
+++ b/lib/Analysis/CaptureTracking.cpp
@@ -49,7 +49,7 @@ bool llvm::PointerMayBeCaptured(const Value *V,
   SmallSet<Use*, Threshold> Visited;
   int Count = 0;
 
-  for (Value::use_const_iterator UI = V->use_begin(), UE = V->use_end();
+  for (Value::const_use_iterator UI = V->use_begin(), UE = V->use_end();
        UI != UE; ++UI) {
     // If there are lots of uses, conservatively say that the value
     // is captured to avoid taking too much compile time.
@@ -69,7 +69,7 @@ bool llvm::PointerMayBeCaptured(const Value *V,
     switch (I->getOpcode()) {
     case Instruction::Call:
     case Instruction::Invoke: {
-      CallSite CS = CallSite::get(I);
+      CallSite CS(I);
       // Not captured if the callee is readonly, doesn't return a copy through
       // its return value and doesn't unwind (a readonly function can leak bits
       // by throwing an exception or not depending on the input value).
@@ -95,6 +95,9 @@ bool llvm::PointerMayBeCaptured(const Value *V,
     case Instruction::Load:
       // Loading from a pointer does not cause it to be captured.
       break;
+    case Instruction::VAArg:
+      // "va-arg" from a pointer does not cause it to be captured.
+      break;
     case Instruction::Ret:
       if (ReturnCaptures)
         return true;