4 files changed, 18 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-dwp/Inputs/duplicate/ac.dwp b/llvm/test/tools/llvm-dwp/Inputs/duplicate/ac.dwp
new file mode 100644
index 00000000000..e4f3d103657
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/Inputs/duplicate/ac.dwp
diff --git a/llvm/test/tools/llvm-dwp/Inputs/duplicate/bc.dwp b/llvm/test/tools/llvm-dwp/Inputs/duplicate/bc.dwp
new file mode 100644
index 00000000000..9696e3155d7
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/Inputs/duplicate/bc.dwp
diff --git a/llvm/test/tools/llvm-dwp/Inputs/duplicate/c.dwo b/llvm/test/tools/llvm-dwp/Inputs/duplicate/c.dwo
new file mode 100644
index 00000000000..7c5c91101ef
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/Inputs/duplicate/c.dwo
diff --git a/llvm/test/tools/llvm-dwp/X86/duplicate.test b/llvm/test/tools/llvm-dwp/X86/duplicate.test
new file mode 100644
index 00000000000..1330cf37fed
--- /dev/null
+++ b/llvm/test/tools/llvm-dwp/X86/duplicate.test
@@ -0,0 +1,18 @@
+RUN: not llvm-dwp %p/../Inputs/duplicate/c.dwo %p/../Inputs/duplicate/c.dwo -o %t 2>&1 \
+RUN:   | FileCheck --check-prefix=CHECK %s
+
+RUN: not llvm-dwp %p/../Inputs/duplicate/c.dwo %p/../Inputs/duplicate/bc.dwp -o %t 2>&1 \
+RUN:   | FileCheck --check-prefix=CHECK --check-prefix=DWP2 %s
+
+RUN: not llvm-dwp %p/../Inputs/duplicate/ac.dwp %p/../Inputs/duplicate/c.dwo -o %t 2>&1 \
+RUN:   | FileCheck --check-prefix=CHECK --check-prefix=DWP1 %s
+
+RUN: not llvm-dwp %p/../Inputs/duplicate/ac.dwp %p/../Inputs/duplicate/bc.dwp -o %t 2>&1 \
+RUN:   | FileCheck --check-prefix=CHECK --check-prefix=DWP1 --check-prefix=DWP2 %s
+
+Build from a, b, and c.c all containing a single void() func by the name of the file.
+
+CHECK: Duplicate DWO ID ({{.*}}) in 'c.c'
+DWP1-SAME: (from '{{.*}}ac.dwp')
+CHECK-SAME: and 'c.c'
+DWP2-SAME: (from '{{.*}}bc.dwp')