Index: lib/Transforms/IPO/PartialInlining.cpp
===================================================================
--- lib/Transforms/IPO/PartialInlining.cpp
+++ lib/Transforms/IPO/PartialInlining.cpp
@@ -1430,6 +1430,7 @@
           CallInst *Call =
               CallInst::Create(CI->getCalledFunction(), Params, "", CI);
           Call->setDebugLoc(CI->getDebugLoc());
+          Call->setAttributes(CS.getAttributes());
           CI->replaceAllUsesWith(Call);
           CI->eraseFromParent();
         }
Index: test/Transforms/CodeExtractor/PartialInlineVarArgsDebug.ll
===================================================================
--- test/Transforms/CodeExtractor/PartialInlineVarArgsDebug.ll
+++ test/Transforms/CodeExtractor/PartialInlineVarArgsDebug.ll
@@ -1,8 +1,8 @@
 ; RUN: opt < %s -S -partial-inliner -skip-partial-inlining-cost-analysis=true | FileCheck %s
 
-; CHECK-LABEL: @callee
+; CHECK: define i32 @callee(i32 %v, ...) [[FN_ATTRS:#[0-9]+]]
 ; CHECK: %mul = mul nsw i32 %v, 10, !dbg ![[DBG1:[0-9]+]]
-define i32 @callee(i32 %v, ...) !dbg !16 {
+define i32 @callee(i32 %v, ...) #0 !dbg !16 {
 entry:
   %cmp = icmp sgt i32 %v, 2000, !dbg !17
   br i1 %cmp, label %if.then, label %if.end, !dbg !19
@@ -19,20 +19,23 @@
 
 ; CHECK-LABEL: @caller
 ; CHECK: codeRepl.i:
-; CHECK-NEXT: call void (i32, i32*, ...) @callee.1_if.then(i32 %v, i32* %mul.loc.i, i32 99), !dbg ![[DBG2:[0-9]+]]
+; CHECK-NEXT: call void (i32, i32*, ...) @callee.1_if.then(i32 %v, i32* %mul.loc.i, i32 99) [[FN_ATTRS]], !dbg ![[DBG2:[0-9]+]]
 define i32 @caller(i32 %v) !dbg !8 {
 entry:
-  %call = call i32 (i32, ...) @callee(i32 %v, i32 99), !dbg !14
+  %call = call i32 (i32, ...) @callee(i32 %v, i32 99) #0, !dbg !14
   ret i32 %call, !dbg !15
 }
 
-; CHECK-LABEL: define internal void @callee.1_if.then
+; CHECK:define internal void @callee.1_if.then(i32 %v, i32* %mul.out, ...) [[FN_ATTRS]]
 ; CHECK: br label %if.then, !dbg ![[DBG3:[0-9]+]]
 
+; CHECK: attributes [[FN_ATTRS]] = { "foo"="bar" }
+
 ; CHECK: ![[DBG1]] = !DILocation(line: 10, column: 7,
 ; CHECK: ![[DBG2]] = !DILocation(line: 10, column: 7,
 ; CHECK: ![[DBG3]] = !DILocation(line: 10, column: 7,
 
+attributes #0 = { "foo"="bar" }
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3, !4, !5, !6}