1 files changed, 67 insertions, 0 deletions
diff --git a/llvm/test/Transforms/CodeExtractor/live_shrink.ll b/llvm/test/Transforms/CodeExtractor/live_shrink.ll
new file mode 100644
index 00000000000..780ab480c4b
--- /dev/null
+++ b/llvm/test/Transforms/CodeExtractor/live_shrink.ll
@@ -0,0 +1,67 @@
+; RUN: opt -S -partial-inliner  -skip-partial-inlining-cost-analysis  < %s |   FileCheck %s
+; RUN: opt -S -passes=partial-inliner  -skip-partial-inlining-cost-analysis  < %s   | FileCheck %s
+
+%class.A = type { i32 }
+@cond = local_unnamed_addr global i32 0, align 4
+
+; Function Attrs: uwtable
+define void @_Z3foov() local_unnamed_addr  {
+bb:
+  %tmp = alloca %class.A, align 4
+  %tmp1 = bitcast %class.A* %tmp to i8*
+  call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp1)
+  %tmp2 = load i32, i32* @cond, align 4, !tbaa !2
+  %tmp3 = icmp eq i32 %tmp2, 0
+  br i1 %tmp3, label %bb4, label %bb5
+
+bb4:                                              ; preds = %bb
+  call void @_ZN1A7memfuncEv(%class.A* nonnull %tmp)
+  br label %bb5
+
+bb5:                                              ; preds = %bb4, %bb
+  call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp1)
+  ret void
+}
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) 
+
+declare void @_ZN1A7memfuncEv(%class.A*) local_unnamed_addr 
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) 
+
+; Function Attrs: uwtable
+define void @_Z3goov() local_unnamed_addr  {
+; CHECK-LABEL: @_Z3goov()
+bb:
+; CHECK: bb:
+; CHECK-NOT: alloca
+; CHECK-NOT: bitcast
+; CHECK-NOT: llvm.lifetime
+; CHECK: br i1
+; CHECK: codeRepl.i:
+; CHECK: call void @_Z3foov.1.
+
+  tail call void @_Z3foov()
+  ret void
+}
+
+; CHECK-LABEL: define internal void @_Z3foov.1.
+; CHECK: newFuncRoot:
+; CHECK-NEXT:  %tmp = alloca %class.A
+; CHECK-NEXT:  %tmp1 = bitcast %class.A* %tmp to i8*
+; CHECK-NEXT:  call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %tmp1)
+; CHECK:  call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %tmp1)
+; CHECK-NEXT:  br label %bb5.exitStub
+
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{!"clang version 5.0.0 (trunk 304489)"}
+!2 = !{!3, !3, i64 0}
+!3 = !{!"int", !4, i64 0}
+!4 = !{!"omnipotent char", !5, i64 0}
+!5 = !{!"Simple C++ TBAA"}