Index: lib/Transforms/IPO/Inliner.cpp
===================================================================
--- lib/Transforms/IPO/Inliner.cpp
+++ lib/Transforms/IPO/Inliner.cpp
@@ -1145,6 +1145,7 @@
     // re-use the exact same logic for updating the call graph to reflect the
     // change.
     LazyCallGraph::SCC *OldC = C;
+    unsigned CWSizeBeforeUpdate = UR.CWorklist.size();
     C = &updateCGAndAnalysisManagerForFunctionPass(CG, *C, N, AM, UR);
     LLVM_DEBUG(dbgs() << "Updated inlining SCC: " << *C << "\n");
     RC = &C->getOuterRefSCC();
@@ -1159,9 +1160,20 @@
     // node and the SCC containing the call edge. This is a slight over
     // approximation of the possible inlining decisions that must be avoided,
     // but is relatively efficient to store.
+    //
+    // It is possible that even if no new SCC is generated (i.e., C == OldC),
+    // the original SCC could be split and then merged into the same one as
+    // itself. During this process, the original SCC will be added into
+    // UR.CWorklist again, we want to cache such case too.
+    //
+    // So if only split has ever happen, the size of UR.CWorklist will be
+    // larger than that before the SCC update, and we will cache the history
+    // then.
+    //
     // FIXME: This seems like a very heavyweight way of retaining the inline
     // history, we should look for a more efficient way of tracking it.
-    if (C != OldC && llvm::any_of(InlinedCallees, [&](Function *Callee) {
+    if (CWSizeBeforeUpdate < UR.CWorklist.size() &&
+        llvm::any_of(InlinedCallees, [&](Function *Callee) {
           return CG.lookupSCC(*CG.lookup(*Callee)) == OldC;
         })) {
       LLVM_DEBUG(dbgs() << "Inlined an internal call edge and split an SCC, "
Index: test/Transforms/Inline/cgscc-cycle-2.ll
===================================================================
--- test/Transforms/Inline/cgscc-cycle-2.ll
+++ test/Transforms/Inline/cgscc-cycle-2.ll
@@ -0,0 +1,436 @@
+; This test contains another tricky call graph structures for the inliner to
+; handle correctly. The callgraph is like following:
+;
+;         foo <---> goo
+;          |         ^
+;          v         |
+;         moo <---> noo
+;
+; For all the call edges in the call graph, only moo and noo can be inlined
+; into foo, and no other call edge can be inlined.
+;
+; After moo is inlined into foo, the original call edge foo->moo will be
+; removed, a new call edge will be added and the call graph becomes:
+;
+;         foo <---> goo
+;           \      ^
+;            v    /
+;   moo <---> noo
+; But foo, goo, moo and noo still belong to the same SCC.
+;
+; Then after foo->noo is inlined, when foo->noo is converted to a ref edge,
+; the original SCC will be split into two: {moo, noo} and {foo, goo},
+; immediately the newly added ref edge foo->moo will be converted to a call
+; edge, and the two SCCs will be merged into the original one again. During
+; this cycle, the original SCC will be added into UR.CWorklist again and
+; this creates an infinite loop.
+;
+; RUN: opt < %s -passes='cgscc(inline,function(sroa,instcombine))' -S | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@a = dso_local local_unnamed_addr global i64 0, align 8
+
+define dso_local void @_Z3mooi(i32 %i) local_unnamed_addr #1 {
+entry:
+  %cmp = icmp eq i32 %i, 5
+  br i1 %cmp, label %if.end, label %if.then
+
+if.then:                                          ; preds = %entry
+  %call = tail call i64 @random() #2
+  %0 = load i64, i64* @a, align 8, !tbaa !2
+  %add = add nsw i64 %0, %call
+  store i64 %add, i64* @a, align 8, !tbaa !2
+  %call1 = tail call i64 @random() #2
+  %1 = load i64, i64* @a, align 8, !tbaa !2
+  %add2 = add nsw i64 %1, %call1
+  store i64 %add2, i64* @a, align 8, !tbaa !2
+  %call3 = tail call i64 @random() #2
+  %2 = load i64, i64* @a, align 8, !tbaa !2
+  %add4 = add nsw i64 %2, %call3
+  store i64 %add4, i64* @a, align 8, !tbaa !2
+  %call5 = tail call i64 @random() #2
+  %3 = load i64, i64* @a, align 8, !tbaa !2
+  %add6 = add nsw i64 %3, %call5
+  store i64 %add6, i64* @a, align 8, !tbaa !2
+  %call7 = tail call i64 @random() #2
+  %4 = load i64, i64* @a, align 8, !tbaa !2
+  %add8 = add nsw i64 %4, %call7
+  store i64 %add8, i64* @a, align 8, !tbaa !2
+  %call9 = tail call i64 @random() #2
+  %5 = load i64, i64* @a, align 8, !tbaa !2
+  %add10 = add nsw i64 %5, %call9
+  store i64 %add10, i64* @a, align 8, !tbaa !2
+  %call11 = tail call i64 @random() #2
+  %6 = load i64, i64* @a, align 8, !tbaa !2
+  %add12 = add nsw i64 %6, %call11
+  store i64 %add12, i64* @a, align 8, !tbaa !2
+  %call13 = tail call i64 @random() #2
+  %7 = load i64, i64* @a, align 8, !tbaa !2
+  %add14 = add nsw i64 %7, %call13
+  store i64 %add14, i64* @a, align 8, !tbaa !2
+  %call15 = tail call i64 @random() #2
+  %8 = load i64, i64* @a, align 8, !tbaa !2
+  %add16 = add nsw i64 %8, %call15
+  store i64 %add16, i64* @a, align 8, !tbaa !2
+  %call17 = tail call i64 @random() #2
+  %9 = load i64, i64* @a, align 8, !tbaa !2
+  %add18 = add nsw i64 %9, %call17
+  store i64 %add18, i64* @a, align 8, !tbaa !2
+  %call19 = tail call i64 @random() #2
+  %10 = load i64, i64* @a, align 8, !tbaa !2
+  %add20 = add nsw i64 %10, %call19
+  store i64 %add20, i64* @a, align 8, !tbaa !2
+  %call21 = tail call i64 @random() #2
+  %11 = load i64, i64* @a, align 8, !tbaa !2
+  %add22 = add nsw i64 %11, %call21
+  store i64 %add22, i64* @a, align 8, !tbaa !2
+  %call23 = tail call i64 @random() #2
+  %12 = load i64, i64* @a, align 8, !tbaa !2
+  %add24 = add nsw i64 %12, %call23
+  store i64 %add24, i64* @a, align 8, !tbaa !2
+  %call25 = tail call i64 @random() #2
+  %13 = load i64, i64* @a, align 8, !tbaa !2
+  %add26 = add nsw i64 %13, %call25
+  store i64 %add26, i64* @a, align 8, !tbaa !2
+  %call27 = tail call i64 @random() #2
+  %14 = load i64, i64* @a, align 8, !tbaa !2
+  %add28 = add nsw i64 %14, %call27
+  store i64 %add28, i64* @a, align 8, !tbaa !2
+  %call29 = tail call i64 @random() #2
+  %15 = load i64, i64* @a, align 8, !tbaa !2
+  %add30 = add nsw i64 %15, %call29
+  store i64 %add30, i64* @a, align 8, !tbaa !2
+  %call31 = tail call i64 @random() #2
+  %16 = load i64, i64* @a, align 8, !tbaa !2
+  %add32 = add nsw i64 %16, %call31
+  store i64 %add32, i64* @a, align 8, !tbaa !2
+  %call33 = tail call i64 @random() #2
+  %17 = load i64, i64* @a, align 8, !tbaa !2
+  %add34 = add nsw i64 %17, %call33
+  store i64 %add34, i64* @a, align 8, !tbaa !2
+  %call35 = tail call i64 @random() #2
+  %18 = load i64, i64* @a, align 8, !tbaa !2
+  %add36 = add nsw i64 %18, %call35
+  store i64 %add36, i64* @a, align 8, !tbaa !2
+  %call37 = tail call i64 @random() #2
+  %19 = load i64, i64* @a, align 8, !tbaa !2
+  %add38 = add nsw i64 %19, %call37
+  store i64 %add38, i64* @a, align 8, !tbaa !2
+  %call39 = tail call i64 @random() #2
+  %20 = load i64, i64* @a, align 8, !tbaa !2
+  %add40 = add nsw i64 %20, %call39
+  store i64 %add40, i64* @a, align 8, !tbaa !2
+  %call41 = tail call i64 @random() #2
+  %21 = load i64, i64* @a, align 8, !tbaa !2
+  %add42 = add nsw i64 %21, %call41
+  store i64 %add42, i64* @a, align 8, !tbaa !2
+  %call43 = tail call i64 @random() #2
+  %22 = load i64, i64* @a, align 8, !tbaa !2
+  %add44 = add nsw i64 %22, %call43
+  store i64 %add44, i64* @a, align 8, !tbaa !2
+  %call45 = tail call i64 @random() #2
+  %23 = load i64, i64* @a, align 8, !tbaa !2
+  %add46 = add nsw i64 %23, %call45
+  store i64 %add46, i64* @a, align 8, !tbaa !2
+  %call47 = tail call i64 @random() #2
+  %24 = load i64, i64* @a, align 8, !tbaa !2
+  %add48 = add nsw i64 %24, %call47
+  store i64 %add48, i64* @a, align 8, !tbaa !2
+  %call49 = tail call i64 @random() #2
+  %25 = load i64, i64* @a, align 8, !tbaa !2
+  %add50 = add nsw i64 %25, %call49
+  store i64 %add50, i64* @a, align 8, !tbaa !2
+  %call51 = tail call i64 @random() #2
+  %26 = load i64, i64* @a, align 8, !tbaa !2
+  %add52 = add nsw i64 %26, %call51
+  store i64 %add52, i64* @a, align 8, !tbaa !2
+  %call53 = tail call i64 @random() #2
+  %27 = load i64, i64* @a, align 8, !tbaa !2
+  %add54 = add nsw i64 %27, %call53
+  store i64 %add54, i64* @a, align 8, !tbaa !2
+  %call55 = tail call i64 @random() #2
+  %28 = load i64, i64* @a, align 8, !tbaa !2
+  %add56 = add nsw i64 %28, %call55
+  store i64 %add56, i64* @a, align 8, !tbaa !2
+  %call57 = tail call i64 @random() #2
+  %29 = load i64, i64* @a, align 8, !tbaa !2
+  %add58 = add nsw i64 %29, %call57
+  store i64 %add58, i64* @a, align 8, !tbaa !2
+  %call59 = tail call i64 @random() #2
+  %30 = load i64, i64* @a, align 8, !tbaa !2
+  %add60 = add nsw i64 %30, %call59
+  store i64 %add60, i64* @a, align 8, !tbaa !2
+  %call61 = tail call i64 @random() #2
+  %31 = load i64, i64* @a, align 8, !tbaa !2
+  %add62 = add nsw i64 %31, %call61
+  store i64 %add62, i64* @a, align 8, !tbaa !2
+  %call63 = tail call i64 @random() #2
+  %32 = load i64, i64* @a, align 8, !tbaa !2
+  %add64 = add nsw i64 %32, %call63
+  store i64 %add64, i64* @a, align 8, !tbaa !2
+  %call65 = tail call i64 @random() #2
+  %33 = load i64, i64* @a, align 8, !tbaa !2
+  %add66 = add nsw i64 %33, %call65
+  store i64 %add66, i64* @a, align 8, !tbaa !2
+  %call67 = tail call i64 @random() #2
+  %34 = load i64, i64* @a, align 8, !tbaa !2
+  %add68 = add nsw i64 %34, %call67
+  store i64 %add68, i64* @a, align 8, !tbaa !2
+  %call69 = tail call i64 @random() #2
+  %35 = load i64, i64* @a, align 8, !tbaa !2
+  %add70 = add nsw i64 %35, %call69
+  store i64 %add70, i64* @a, align 8, !tbaa !2
+  %call71 = tail call i64 @random() #2
+  %36 = load i64, i64* @a, align 8, !tbaa !2
+  %add72 = add nsw i64 %36, %call71
+  store i64 %add72, i64* @a, align 8, !tbaa !2
+  %call73 = tail call i64 @random() #2
+  %37 = load i64, i64* @a, align 8, !tbaa !2
+  %add74 = add nsw i64 %37, %call73
+  store i64 %add74, i64* @a, align 8, !tbaa !2
+  %call75 = tail call i64 @random() #2
+  %38 = load i64, i64* @a, align 8, !tbaa !2
+  %add76 = add nsw i64 %38, %call75
+  store i64 %add76, i64* @a, align 8, !tbaa !2
+  %call77 = tail call i64 @random() #2
+  %39 = load i64, i64* @a, align 8, !tbaa !2
+  %add78 = add nsw i64 %39, %call77
+  store i64 %add78, i64* @a, align 8, !tbaa !2
+  %call79 = tail call i64 @random() #2
+  %40 = load i64, i64* @a, align 8, !tbaa !2
+  %add80 = add nsw i64 %40, %call79
+  store i64 %add80, i64* @a, align 8, !tbaa !2
+  %call81 = tail call i64 @random() #2
+  %41 = load i64, i64* @a, align 8, !tbaa !2
+  %add82 = add nsw i64 %41, %call81
+  store i64 %add82, i64* @a, align 8, !tbaa !2
+  %call83 = tail call i64 @random() #2
+  %42 = load i64, i64* @a, align 8, !tbaa !2
+  %add84 = add nsw i64 %42, %call83
+  store i64 %add84, i64* @a, align 8, !tbaa !2
+  br label %if.end
+
+if.end:                                           ; preds = %entry, %if.then
+  tail call void @_Z3nooi(i32 %i)
+  %43 = load i64, i64* @a, align 8, !tbaa !2
+  %add85 = add nsw i64 %43, 1
+  store i64 %add85, i64* @a, align 8, !tbaa !2
+  ret void
+}
+
+; Function Attrs: nounwind
+declare dso_local i64 @random() local_unnamed_addr
+
+define dso_local void @_Z3nooi(i32 %i) local_unnamed_addr #1 {
+entry:
+  %cmp = icmp eq i32 %i, 5
+  br i1 %cmp, label %if.end, label %if.then
+
+if.then:                                          ; preds = %entry
+  %call = tail call i64 @random() #2
+  %0 = load i64, i64* @a, align 8, !tbaa !2
+  %add = add nsw i64 %0, %call
+  store i64 %add, i64* @a, align 8, !tbaa !2
+  %call1 = tail call i64 @random() #2
+  %1 = load i64, i64* @a, align 8, !tbaa !2
+  %add2 = add nsw i64 %1, %call1
+  store i64 %add2, i64* @a, align 8, !tbaa !2
+  %call3 = tail call i64 @random() #2
+  %2 = load i64, i64* @a, align 8, !tbaa !2
+  %add4 = add nsw i64 %2, %call3
+  store i64 %add4, i64* @a, align 8, !tbaa !2
+  %call5 = tail call i64 @random() #2
+  %3 = load i64, i64* @a, align 8, !tbaa !2
+  %add6 = add nsw i64 %3, %call5
+  store i64 %add6, i64* @a, align 8, !tbaa !2
+  %call7 = tail call i64 @random() #2
+  %4 = load i64, i64* @a, align 8, !tbaa !2
+  %add8 = add nsw i64 %4, %call7
+  store i64 %add8, i64* @a, align 8, !tbaa !2
+  %call9 = tail call i64 @random() #2
+  %5 = load i64, i64* @a, align 8, !tbaa !2
+  %add10 = add nsw i64 %5, %call9
+  store i64 %add10, i64* @a, align 8, !tbaa !2
+  %call11 = tail call i64 @random() #2
+  %6 = load i64, i64* @a, align 8, !tbaa !2
+  %add12 = add nsw i64 %6, %call11
+  store i64 %add12, i64* @a, align 8, !tbaa !2
+  %call13 = tail call i64 @random() #2
+  %7 = load i64, i64* @a, align 8, !tbaa !2
+  %add14 = add nsw i64 %7, %call13
+  store i64 %add14, i64* @a, align 8, !tbaa !2
+  %call15 = tail call i64 @random() #2
+  %8 = load i64, i64* @a, align 8, !tbaa !2
+  %add16 = add nsw i64 %8, %call15
+  store i64 %add16, i64* @a, align 8, !tbaa !2
+  %call17 = tail call i64 @random() #2
+  %9 = load i64, i64* @a, align 8, !tbaa !2
+  %add18 = add nsw i64 %9, %call17
+  store i64 %add18, i64* @a, align 8, !tbaa !2
+  %call19 = tail call i64 @random() #2
+  %10 = load i64, i64* @a, align 8, !tbaa !2
+  %add20 = add nsw i64 %10, %call19
+  store i64 %add20, i64* @a, align 8, !tbaa !2
+  %call21 = tail call i64 @random() #2
+  %11 = load i64, i64* @a, align 8, !tbaa !2
+  %add22 = add nsw i64 %11, %call21
+  store i64 %add22, i64* @a, align 8, !tbaa !2
+  %call23 = tail call i64 @random() #2
+  %12 = load i64, i64* @a, align 8, !tbaa !2
+  %add24 = add nsw i64 %12, %call23
+  store i64 %add24, i64* @a, align 8, !tbaa !2
+  %call25 = tail call i64 @random() #2
+  %13 = load i64, i64* @a, align 8, !tbaa !2
+  %add26 = add nsw i64 %13, %call25
+  store i64 %add26, i64* @a, align 8, !tbaa !2
+  %call27 = tail call i64 @random() #2
+  %14 = load i64, i64* @a, align 8, !tbaa !2
+  %add28 = add nsw i64 %14, %call27
+  store i64 %add28, i64* @a, align 8, !tbaa !2
+  %call29 = tail call i64 @random() #2
+  %15 = load i64, i64* @a, align 8, !tbaa !2
+  %add30 = add nsw i64 %15, %call29
+  store i64 %add30, i64* @a, align 8, !tbaa !2
+  %call31 = tail call i64 @random() #2
+  %16 = load i64, i64* @a, align 8, !tbaa !2
+  %add32 = add nsw i64 %16, %call31
+  store i64 %add32, i64* @a, align 8, !tbaa !2
+  %call33 = tail call i64 @random() #2
+  %17 = load i64, i64* @a, align 8, !tbaa !2
+  %add34 = add nsw i64 %17, %call33
+  store i64 %add34, i64* @a, align 8, !tbaa !2
+  %call35 = tail call i64 @random() #2
+  %18 = load i64, i64* @a, align 8, !tbaa !2
+  %add36 = add nsw i64 %18, %call35
+  store i64 %add36, i64* @a, align 8, !tbaa !2
+  %call37 = tail call i64 @random() #2
+  %19 = load i64, i64* @a, align 8, !tbaa !2
+  %add38 = add nsw i64 %19, %call37
+  store i64 %add38, i64* @a, align 8, !tbaa !2
+  %call39 = tail call i64 @random() #2
+  %20 = load i64, i64* @a, align 8, !tbaa !2
+  %add40 = add nsw i64 %20, %call39
+  store i64 %add40, i64* @a, align 8, !tbaa !2
+  %call41 = tail call i64 @random() #2
+  %21 = load i64, i64* @a, align 8, !tbaa !2
+  %add42 = add nsw i64 %21, %call41
+  store i64 %add42, i64* @a, align 8, !tbaa !2
+  %call43 = tail call i64 @random() #2
+  %22 = load i64, i64* @a, align 8, !tbaa !2
+  %add44 = add nsw i64 %22, %call43
+  store i64 %add44, i64* @a, align 8, !tbaa !2
+  %call45 = tail call i64 @random() #2
+  %23 = load i64, i64* @a, align 8, !tbaa !2
+  %add46 = add nsw i64 %23, %call45
+  store i64 %add46, i64* @a, align 8, !tbaa !2
+  %call47 = tail call i64 @random() #2
+  %24 = load i64, i64* @a, align 8, !tbaa !2
+  %add48 = add nsw i64 %24, %call47
+  store i64 %add48, i64* @a, align 8, !tbaa !2
+  %call49 = tail call i64 @random() #2
+  %25 = load i64, i64* @a, align 8, !tbaa !2
+  %add50 = add nsw i64 %25, %call49
+  store i64 %add50, i64* @a, align 8, !tbaa !2
+  %call51 = tail call i64 @random() #2
+  %26 = load i64, i64* @a, align 8, !tbaa !2
+  %add52 = add nsw i64 %26, %call51
+  store i64 %add52, i64* @a, align 8, !tbaa !2
+  %call53 = tail call i64 @random() #2
+  %27 = load i64, i64* @a, align 8, !tbaa !2
+  %add54 = add nsw i64 %27, %call53
+  store i64 %add54, i64* @a, align 8, !tbaa !2
+  %call55 = tail call i64 @random() #2
+  %28 = load i64, i64* @a, align 8, !tbaa !2
+  %add56 = add nsw i64 %28, %call55
+  store i64 %add56, i64* @a, align 8, !tbaa !2
+  %call57 = tail call i64 @random() #2
+  %29 = load i64, i64* @a, align 8, !tbaa !2
+  %add58 = add nsw i64 %29, %call57
+  store i64 %add58, i64* @a, align 8, !tbaa !2
+  %call59 = tail call i64 @random() #2
+  %30 = load i64, i64* @a, align 8, !tbaa !2
+  %add60 = add nsw i64 %30, %call59
+  store i64 %add60, i64* @a, align 8, !tbaa !2
+  %call61 = tail call i64 @random() #2
+  %31 = load i64, i64* @a, align 8, !tbaa !2
+  %add62 = add nsw i64 %31, %call61
+  store i64 %add62, i64* @a, align 8, !tbaa !2
+  %call63 = tail call i64 @random() #2
+  %32 = load i64, i64* @a, align 8, !tbaa !2
+  %add64 = add nsw i64 %32, %call63
+  store i64 %add64, i64* @a, align 8, !tbaa !2
+  %call65 = tail call i64 @random() #2
+  %33 = load i64, i64* @a, align 8, !tbaa !2
+  %add66 = add nsw i64 %33, %call65
+  store i64 %add66, i64* @a, align 8, !tbaa !2
+  %call67 = tail call i64 @random() #2
+  %34 = load i64, i64* @a, align 8, !tbaa !2
+  %add68 = add nsw i64 %34, %call67
+  store i64 %add68, i64* @a, align 8, !tbaa !2
+  %call69 = tail call i64 @random() #2
+  %35 = load i64, i64* @a, align 8, !tbaa !2
+  %add70 = add nsw i64 %35, %call69
+  store i64 %add70, i64* @a, align 8, !tbaa !2
+  %call71 = tail call i64 @random() #2
+  %36 = load i64, i64* @a, align 8, !tbaa !2
+  %add72 = add nsw i64 %36, %call71
+  store i64 %add72, i64* @a, align 8, !tbaa !2
+  %call73 = tail call i64 @random() #2
+  %37 = load i64, i64* @a, align 8, !tbaa !2
+  %add74 = add nsw i64 %37, %call73
+  store i64 %add74, i64* @a, align 8, !tbaa !2
+  %call75 = tail call i64 @random() #2
+  %38 = load i64, i64* @a, align 8, !tbaa !2
+  %add76 = add nsw i64 %38, %call75
+  store i64 %add76, i64* @a, align 8, !tbaa !2
+  %call77 = tail call i64 @random() #2
+  %39 = load i64, i64* @a, align 8, !tbaa !2
+  %add78 = add nsw i64 %39, %call77
+  store i64 %add78, i64* @a, align 8, !tbaa !2
+  br label %if.end
+
+if.end:                                           ; preds = %entry, %if.then
+  tail call void @_Z3mooi(i32 %i)
+  tail call void @_Z3goov()
+  %40 = load i64, i64* @a, align 8, !tbaa !2
+  %add79 = add nsw i64 %40, 3
+  store i64 %add79, i64* @a, align 8, !tbaa !2
+  ret void
+}
+
+; Function Attrs: noinline nounwind uwtable
+define dso_local void @_Z3goov() local_unnamed_addr #0 {
+entry:
+  tail call void @_Z3foov()
+  %0 = load i64, i64* @a, align 8, !tbaa !2
+  %add = add nsw i64 %0, 2
+  store i64 %add, i64* @a, align 8, !tbaa !2
+  ret void
+}
+
+; Function Attrs: noinline nounwind uwtable
+define dso_local void @_Z3foov() local_unnamed_addr #0 {
+entry:
+  tail call void @_Z3goov()
+  tail call void @_Z3mooi(i32 5)
+  %0 = load i64, i64* @a, align 8, !tbaa !2
+  %add = add nsw i64 %0, 5
+  store i64 %add, i64* @a, align 8, !tbaa !2
+  ret void
+}
+
+attributes #0 = { noinline nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 8.0.0 (trunk 342257)"}
+!2 = !{!3, !3, i64 0}
+!3 = !{!"long", !4, i64 0}
+!4 = !{!"omnipotent char", !5, i64 0}
+!5 = !{!"Simple C++ TBAA"}