Add missing newlines at EOF (for clang++).

[oota-llvm.git] / lib / Transforms / Scalar / SCCP.cpp

diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index 977827841d9e81524b8c9f2227b2901d0ddbfb0c..d8c59b1d7421e9f81c3775f5f109970cfa2122da 100644 (file)
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -1871,8 +1871,12 @@ bool IPSCCP::runOnModule(Module &M) {
       BasicBlock *DeadBB = BlocksToErase[i];
       for (Value::use_iterator UI = DeadBB->use_begin(), UE = DeadBB->use_end();
            UI != UE; ) {
+        // Grab the user and then increment the iterator early, as the user
+        // will be deleted. Step past all adjacent uses from the same user.
+        Instruction *I = dyn_cast<Instruction>(*UI);
+        do { ++UI; } while (UI != UE && *UI == I);
+
         // Ignore blockaddress users; BasicBlock's dtor will handle them.
-        Instruction *I = dyn_cast<Instruction>(*UI++);
         if (!I) continue;
 
         bool Folded = ConstantFoldTerminator(I->getParent());