Index: lld/COFF/PDB.cpp
===================================================================
--- lld/COFF/PDB.cpp
+++ lld/COFF/PDB.cpp
@@ -507,22 +507,19 @@
 }
 
 static bool equals_path(StringRef path1, StringRef path2) {
+    SmallString<128> path1_norm = sys::path::convert_to_slash(path1);
+    SmallString<128> path2_norm = sys::path::convert_to_slash(path2);
 #if defined(_WIN32)
-  return path1.equals_lower(path2);
+    return StringRef(path1_norm).endswith_lower(path2_norm);
 #else
-  return path1.equals(path2);
+    return StringRef(path1_norm).endswith(path2_norm);
 #endif
 }
 
 // Find by name an OBJ provided on the command line
-static ObjFile *findObjByName(StringRef fileNameOnly) {
-  SmallString<128> currentPath;
-
+static ObjFile *findObjByName(StringRef filePath) {
   for (ObjFile *f : ObjFile::instances) {
-    StringRef currentFileName = sys::path::filename(f->getName());
-
-    // Compare based solely on the file name (link.exe behavior)
-    if (equals_path(currentFileName, fileNameOnly))
+    if (equals_path(filePath, f->getName()))
       return f;
   }
   return nullptr;
@@ -559,7 +556,7 @@
 
   // link.exe requires that a precompiled headers object must always be provided
   // on the command-line, even if that's not necessary.
-  auto precompFile = findObjByName(precompFileName);
+  auto precompFile = findObjByName(precomp.getPrecompFilePath());
   if (!precompFile)
     return createFileError(
         precompFileName.str(),
Index: lld/test/COFF/precomp-link-samename.test
===================================================================
--- /dev/null
+++ lld/test/COFF/precomp-link-samename.test
@@ -0,0 +1,36 @@
+RUN: lld-link %S/Inputs/precompb/useprecomp.obj %S/Inputs/precompa/precomp.obj %S/Inputs/precompb/precomp.obj \
+RUN:     %S/Inputs/precompa/useprecomp.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe  \
+RUN:     /summary | FileCheck %s -check-prefix SUMMARY
+
+RUN: llvm-pdbutil dump -types %t.pdb | FileCheck %s
+
+
+CHECK: Types (TPI Stream)
+CHECK-NOT: LF_PRECOMP
+CHECK-NOT: LF_ENDPRECOMP
+
+
+SUMMARY:                                     Summary
+SUMMARY-NEXT: --------------------------------------------------------------------------------
+SUMMARY-NEXT:               4 Input OBJ files (expanded from all cmd-line inputs)
+SUMMARY-NEXT:               0 PDB type server dependencies
+SUMMARY-NEXT:               2 Precomp OBJ dependencies
+
+// precompa/precomp.cpp
+#include "precomp.h"
+
+// precompa/useprecomp.cpp
+#include "precomp.h"
+int main(int argc, char **argv) { return 0; }
+
+// precompa/precomp.h
+int precompa_symbol = 42;
+
+// precompb/precomp.cpp
+#include "precomp.h"
+
+// precompb/useprecomp.cpp
+#include "precomp.h"
+
+// precompb/precomp.h
+int precompb_symbol = 142;
\ No newline at end of file