diff --git a/llvm/lib/Transforms/Instrumentation/MemProfUse.cpp b/llvm/lib/Transforms/Instrumentation/MemProfUse.cpp
index 31e69784262da..c3ff90ea35a72 100644
--- a/llvm/lib/Transforms/Instrumentation/MemProfUse.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemProfUse.cpp
@@ -62,6 +62,11 @@ static cl::opt<bool>
                                      "context in this module's profiles"),
                             cl::Hidden, cl::init(false));
 
+static cl::opt<bool>
+    PrintFunctionGuids("memprof-print-function-guids",
+                       cl::desc("Print function GUIDs computed for matching"),
+                       cl::Hidden, cl::init(false));
+
 static cl::opt<bool>
     SalvageStaleProfile("memprof-salvage-stale-profile",
                         cl::desc("Salvage stale MemProf profile"),
@@ -577,6 +582,9 @@ static void readMemprof(Module &M, Function &F,
   // linkage function.
   auto FuncName = F.getName();
   auto FuncGUID = Function::getGUIDAssumingExternalLinkage(FuncName);
+  if (PrintFunctionGuids)
+    errs() << "MemProf: Function GUID " << FuncGUID << " is " << FuncName
+           << "\n";
   std::optional<memprof::MemProfRecord> MemProfRec;
   auto Err = MemProfReader->getMemProfRecord(FuncGUID).moveInto(MemProfRec);
   if (Err) {
diff --git a/llvm/test/Transforms/PGOProfile/memprof-dump-matched-alloc-site.ll b/llvm/test/Transforms/PGOProfile/memprof-dump-matched-alloc-site.ll
index 10cafff3490b3..f628c5a8a3251 100644
--- a/llvm/test/Transforms/PGOProfile/memprof-dump-matched-alloc-site.ll
+++ b/llvm/test/Transforms/PGOProfile/memprof-dump-matched-alloc-site.ll
@@ -26,7 +26,7 @@
 ; REQUIRES: x86_64-linux
 ; RUN: split-file %s %t
 ; RUN: llvm-profdata merge %t/memprof-dump-matched-alloc-site.yaml -o %t/memprof-dump-matched-alloc-site.memprofdata
-; RUN: opt < %t/memprof-dump-matched-alloc-site.ll -passes='memprof-use<profile-filename=%t/memprof-dump-matched-alloc-site.memprofdata>' -memprof-print-match-info -S -pass-remarks=memprof 2>&1 | FileCheck %s
+; RUN: opt < %t/memprof-dump-matched-alloc-site.ll -passes='memprof-use<profile-filename=%t/memprof-dump-matched-alloc-site.memprofdata>' -memprof-print-match-info -memprof-print-function-guids -S -pass-remarks=memprof 2>&1 | FileCheck %s
 
 ;--- memprof-dump-matched-alloc-site.yaml
 ---
@@ -78,9 +78,12 @@ HeapProfileRecords:
 ...
 ;--- memprof-dump-matched-alloc-site.ll
 
-;; From -pass-remarks=memprof
+;; From -pass-remarks=memprof and -memprof-print-function-guids
+; CHECK: MemProf: Function GUID 4708092051066754107 is _Z2f1v
 ; CHECK: remark: memprof-dump-matched-alloc-site.cc:1:21: call in function _Z2f1v matched alloc context with alloc type notcold total size 3 full context id 5736731103568718490 frame count 1
+; CHECK: MemProf: Function GUID 14255129117669598641 is _Z2f2v
 ; CHECK: remark: memprof-dump-matched-alloc-site.cc:1:21: call in function _Z2f2v matched alloc context with alloc type notcold total size 3 full context id 5736731103568718490 frame count 2
+; CHECK: MemProf: Function GUID 2771528421763978342 is _Z2f3v
 ; CHECK: remark: memprof-dump-matched-alloc-site.cc:1:21: call in function _Z2f3v matched alloc context with alloc type notcold total size 3 full context id 5736731103568718490 frame count 3
 
 ;; From -memprof-print-match-info