diff --git a/lld/test/COFF/lto.ll b/lld/test/COFF/lto.ll
@@ -0,0 +1,81 @@
+; RUN: llvm-as -o %T/main.lto.obj %s
+; RUN: llvm-as -o %T/foo.lto.obj %S/Inputs/lto-dep.ll
+; RUN: rm -f %T/foo.lto.lib
+; RUN: llvm-ar cru %T/foo.lto.lib %T/foo.lto.obj
+
+; RUN: llc -filetype=obj -o %T/main.obj %s
+; RUN: llc -filetype=obj -o %T/foo.obj %S/Inputs/lto-dep.ll
+; RUN: rm -f %T/foo.lib
+; RUN: llvm-ar cru %T/foo.lib %T/foo.obj
+
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.lto.obj %T/foo.lto.obj
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-11 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-11 %s
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.lto.obj %T/foo.lto.lib
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-11 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-11 %s
+
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.obj %T/foo.lto.obj
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-01 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-01 %s
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.obj %T/foo.lto.lib
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-01 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-01 %s
+
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.lto.obj %T/foo.obj
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-10 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-10 %s
+; RUN: lld -flavor link2 /out:%T/main.exe /entry:main /subsystem:console %T/main.lto.obj %T/foo.lib
+; RUN: llvm-readobj -file-headers %T/main.exe | FileCheck -check-prefix=HEADERS-10 %s
+; RUN: llvm-objdump -d %T/main.exe | FileCheck -check-prefix=TEXT-10 %s
+
+; HEADERS-11: AddressOfEntryPoint: 0x1000
+; TEXT-11: Disassembly of section .text:
+; TEXT-11-NEXT: .text:
+; TEXT-11-NEXT: xorl	%eax, %eax
+; TEXT-11-NEXT: retq
+
+; HEADERS-01: AddressOfEntryPoint: 0x1000
+; TEXT-01: Disassembly of section .text:
+; TEXT-01-NEXT: .text:
+; TEXT-01-NEXT: subq	$40, %rsp
+; TEXT-01-NEXT: callq	7
+; TEXT-01-NEXT: xorl	%eax, %eax
+; TEXT-01-NEXT: addq	$40, %rsp
+; TEXT-01-NEXT: retq
+; TEXT-01-NEXT: retq
+
+; HEADERS-10: AddressOfEntryPoint: 0x1010
+; TEXT-10: Disassembly of section .text:
+; TEXT-10-NEXT: .text:
+; TEXT-10-NEXT: retq
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: int3
+; TEXT-10-NEXT: subq	$40, %rsp
+; TEXT-10-NEXT: callq	-25
+; TEXT-10-NEXT: xorl	%eax, %eax
+; TEXT-10-NEXT: addq	$40, %rsp
+; TEXT-10-NEXT: retq
+
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+define i32 @main() {
+  call void @foo()
+  ret i32 0
+}
+
+declare void @foo()
diff --git a/lld/test/lit.cfg b/lld/test/lit.cfg
@@ -33,7 +33,7 @@ else:
 config.test_format = lit.formats.ShTest(execute_external)
 
 # suffixes: A list of file extensions to treat as test files.
-config.suffixes = ['.objtxt', '.test']
+config.suffixes = ['.ll', '.objtxt', '.test']
 
 # excludes: A list of directories to exclude from the testsuite. The 'Inputs'
 # subdirectories contain auxiliary inputs for various tests in their parent