diff options
| -rw-r--r-- | llvm/lib/IR/AutoUpgrade.cpp | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/llvm/lib/IR/AutoUpgrade.cpp b/llvm/lib/IR/AutoUpgrade.cpp index 9ddfc91978e..121b43b7964 100644 --- a/llvm/lib/IR/AutoUpgrade.cpp +++ b/llvm/lib/IR/AutoUpgrade.cpp @@ -802,18 +802,21 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) { } } -void llvm::UpgradeCallsToIntrinsic(Function *F) { +// This tests each Function to determine if it needs upgrading. When we find +// one we are interested in, we then upgrade all calls to reflect the new +// function. +void llvm::UpgradeCallsToIntrinsic(Function* F) { assert(F && "Illegal attempt to upgrade a non-existent intrinsic."); - // Check if this function should be upgraded and get the replacement function - // if there is one. + // Upgrade the function and check if it is a totaly new function. Function *NewFn; if (UpgradeIntrinsicFunction(F, NewFn)) { - // Replace all users of the old function with the new function or new IR. - for (User *U : F->users()) - if (CallInst *CI = dyn_cast<CallInst>(U)) + // Replace all uses to the old function with the new one if necessary. + for (Value::user_iterator UI = F->user_begin(), UE = F->user_end(); + UI != UE;) { + if (CallInst *CI = dyn_cast<CallInst>(*UI++)) UpgradeIntrinsicCall(CI, NewFn); - + } // Remove old function, no longer used, from the module. F->eraseFromParent(); } |
