Generalize isSafeToSpeculativelyExecute to work on arbitrary
Values, rather than just Instructions, since it's interesting
for ConstantExprs too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147560 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 6de4426..6cef42d 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -1879,8 +1879,12 @@
return true;
}
-bool llvm::isSafeToSpeculativelyExecute(const Instruction *Inst,
+bool llvm::isSafeToSpeculativelyExecute(const Value *V,
const TargetData *TD) {
+ const Operator *Inst = dyn_cast<Operator>(V);
+ if (!Inst)
+ return false;
+
for (unsigned i = 0, e = Inst->getNumOperands(); i != e; ++i)
if (Constant *C = dyn_cast<Constant>(Inst->getOperand(i)))
if (C->canTrap())