diff --git a/clang/test/ClangScanDeps/Inputs/has_include_if_elif.json b/clang/test/ClangScanDeps/Inputs/has_include_if_elif.json
--- a/clang/test/ClangScanDeps/Inputs/has_include_if_elif.json
+++ b/clang/test/ClangScanDeps/Inputs/has_include_if_elif.json
@@ -3,10 +3,5 @@
   "directory": "DIR",
   "command": "clang -E DIR/has_include_if_elif2.cpp -IInputs",
   "file": "DIR/has_include_if_elif2.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs -- DIR/has_include_if_elif2_clangcl.cpp",
-  "file": "DIR/has_include_if_elif2_clangcl.cpp"
 }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/header_stat_before_open_cdb.json b/clang/test/ClangScanDeps/Inputs/header_stat_before_open_cdb.json
--- a/clang/test/ClangScanDeps/Inputs/header_stat_before_open_cdb.json
+++ b/clang/test/ClangScanDeps/Inputs/header_stat_before_open_cdb.json
@@ -3,10 +3,5 @@
   "directory": "DIR",
   "command": "clang -E DIR/header_stat_before_open_input.m -iframework Inputs/frameworks",
   "file": "DIR/header_stat_before_open_input.m"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E -Xclang -iframework -Xclang Inputs/frameworks -- DIR/header_stat_before_open_input_clangcl.m",
-  "file": "DIR/header_stat_before_open_input_clangcl.m"
 }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/headerwithdirname.json b/clang/test/ClangScanDeps/Inputs/headerwithdirname.json
--- a/clang/test/ClangScanDeps/Inputs/headerwithdirname.json
+++ b/clang/test/ClangScanDeps/Inputs/headerwithdirname.json
@@ -3,10 +3,5 @@
       "directory": "DIR",
       "command": "clang -c -IDIR -IDIR/foodir -IInputs DIR/headerwithdirname_input.cpp",
       "file": "DIR/headerwithdirname_input.cpp"
-    },
-    {
-      "directory": "DIR",
-      "command": "clang-cl /c /IDIR /IDIR/foodir -IInputs -- DIR/headerwithdirname_input_clangcl.cpp",
-      "file": "DIR/headerwithdirname_input_clangcl.cpp"
     }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/headerwithdirnamefollowedbyinclude.json b/clang/test/ClangScanDeps/Inputs/headerwithdirnamefollowedbyinclude.json
--- a/clang/test/ClangScanDeps/Inputs/headerwithdirnamefollowedbyinclude.json
+++ b/clang/test/ClangScanDeps/Inputs/headerwithdirnamefollowedbyinclude.json
@@ -3,10 +3,5 @@
       "directory": "DIR",
       "command": "clang -c -IDIR -IInputs DIR/headerwithdirname_input.cpp",
       "file": "DIR/headerwithdirname_input.cpp"
-    },
-    {
-      "directory": "DIR",
-      "command": "clang-cl /c /IDIR /IInputs -- DIR/headerwithdirname_input_clangcl.cpp",
-      "file": "DIR/headerwithdirname_input_clangcl.cpp"
     }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl.json b/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl.json
deleted file mode 100644
--- a/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl.json
+++ /dev/null
@@ -1,22 +0,0 @@
-[
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /D INCLUDE_HEADER2 /clang:-MD /clang:-MF /clang:DIR/modules_cdb2_clangcl.d /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps -- DIR/modules_cdb_input2.cpp",
-  "file": "DIR/modules_cdb_input2.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps -- DIR/modules_cdb_input.cpp",
-  "file": "DIR/modules_cdb_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps -o a.o -- DIR/modules_cdb_input.cpp",
-  "file": "DIR/modules_cdb_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps -o b.o -- DIR/modules_cdb_input.cpp",
-  "file": "DIR/modules_cdb_input.cpp"
-}
-]
diff --git a/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl_by_mod_name.json b/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl_by_mod_name.json
deleted file mode 100644
--- a/clang/test/ClangScanDeps/Inputs/modules_cdb_clangcl_by_mod_name.json
+++ /dev/null
@@ -1,12 +0,0 @@
-[
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /D INCLUDE_HEADER2 /clang:-MD /clang:-MF /clang:DIR/modules_cdb2_clangcl.d /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps /clang:-x /clang:c++ --",
-  "file": ""
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /clang:-fmodules /clang:-fcxx-modules /clang:-fmodules-cache-path=DIR/module-cache_clangcl /clang:-fimplicit-modules /clang:-fimplicit-module-maps /clang:-x /clang:c++ --",
-  "file": ""
-},
-]
diff --git a/clang/test/ClangScanDeps/Inputs/no-werror.json b/clang/test/ClangScanDeps/Inputs/no-werror.json
--- a/clang/test/ClangScanDeps/Inputs/no-werror.json
+++ b/clang/test/ClangScanDeps/Inputs/no-werror.json
@@ -3,10 +3,5 @@
   "directory": "DIR",
   "command": "clang -E DIR/no-werror_input.cpp -IInputs -std=c++17 -Weverything -Werror",
   "file": "DIR/no-werror.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /std:c++17 -Weverything -Werror -- DIR/no-werror_input_clangcl.cpp",
-  "file": "DIR/no-werror_clangcl.cpp"
 }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/regular_cdb_clangcl.json b/clang/test/ClangScanDeps/Inputs/regular_cdb_clangcl.json
deleted file mode 100644
--- a/clang/test/ClangScanDeps/Inputs/regular_cdb_clangcl.json
+++ /dev/null
@@ -1,17 +0,0 @@
-[
-{
-  "directory": "DIR",
-  "command": "clang --driver-mode=cl /E /IInputs /D INCLUDE_HEADER2 /clang:-MD /clang:-MF /clang:DIR/regular_cdb2_clangcl.d -- DIR/regular_cdb_input2.cpp",
-  "file": "DIR/regular_cdb_input2.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs -- DIR/regular_cdb_input.cpp",
-  "file": "DIR/regular_cdb_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs /Foadena.o -- DIR/regular_cdb_input.cpp",
-  "file": "DIR/regular_cdb_input.cpp"
-}
-]
diff --git a/clang/test/ClangScanDeps/Inputs/static-analyzer-cdb.json b/clang/test/ClangScanDeps/Inputs/static-analyzer-cdb.json
--- a/clang/test/ClangScanDeps/Inputs/static-analyzer-cdb.json
+++ b/clang/test/ClangScanDeps/Inputs/static-analyzer-cdb.json
@@ -3,10 +3,5 @@
   "directory": "DIR",
   "command": "clang --analyze DIR/static-analyzer_clang.c",
   "file": "DIR/static-analyzer_clang.c"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl --analyze -- DIR/static-analyzer_clangcl.c",
-  "file": "DIR/static-analyzer_clangcl.c"
 }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/target-filename-cdb.json b/clang/test/ClangScanDeps/Inputs/target-filename-cdb.json
--- a/clang/test/ClangScanDeps/Inputs/target-filename-cdb.json
+++ b/clang/test/ClangScanDeps/Inputs/target-filename-cdb.json
@@ -23,45 +23,5 @@
   "directory": "DIR",
   "command": "clang-cl /E -- DIR/target-filename_input.cpp",
   "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E -o clangcl-a.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E -oclangcl-b.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /o clangcl-c.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /oclangcl-d.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /Foclangcl-e.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E -o clangcl-firstf.o -o clangcl-lastf.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /oclangcl-firstg.o /Foclangcl-lastg.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
-},
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /Foclangcl-firsth.o -o clangcl-midh.o /oclangcl-lasth.o -- DIR/target-filename_input.cpp",
-  "file": "DIR/target-filename_input.cpp"
 }
 ]
diff --git a/clang/test/ClangScanDeps/Inputs/vfsoverlay_cdb.json b/clang/test/ClangScanDeps/Inputs/vfsoverlay_cdb.json
--- a/clang/test/ClangScanDeps/Inputs/vfsoverlay_cdb.json
+++ b/clang/test/ClangScanDeps/Inputs/vfsoverlay_cdb.json
@@ -4,9 +4,4 @@
   "command": "clang -E DIR/vfsoverlay_input.cpp -IInputs -ivfsoverlay DIR/vfsoverlay.yaml",
   "file": "DIR/vfsoverlay_input.cpp"
 },
-{
-  "directory": "DIR",
-  "command": "clang-cl /E /IInputs -Xclang -ivfsoverlay -Xclang DIR/vfsoverlay.yaml -- DIR/vfsoverlay_input_clangcl.cpp",
-  "file": "DIR/vfsoverlay_input_clangcl.cpp"
-}
 ]
diff --git a/clang/test/ClangScanDeps/cl-output.c b/clang/test/ClangScanDeps/cl-output.c
new file mode 100644
--- /dev/null
+++ b/clang/test/ClangScanDeps/cl-output.c
@@ -0,0 +1,87 @@
+// This test checks that the output path is correctly deduced/recognized in clang-cl mode.
+
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+
+//--- deduce-cdb.json.template
+[{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang --driver-mode=cl /c -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c -- DIR/test.c"
+}]
+
+//--- recognize-cdb.json.template
+[{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c -o DIR/test.o -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c /o DIR/test.o -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c -oDIR/test.o -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c /oDIR/test.o -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c -FoDIR/test.o -- DIR/test.c"
+},{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c /FoDIR/test.o -- DIR/test.c"
+}]
+
+//--- last-arg-cdb.json.template
+[{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c -o DIR/test.o -o DIR/last.o -- DIR/test.c"
+}]
+
+//--- test.c
+
+// Check that missing output path is deduced (with both clang-cl executable and driver mode flag):
+//
+// RUN: sed -e "s|DIR|%/t|g" %t/deduce-cdb.json.template > %t/deduce-cdb.json
+// RUN: clang-scan-deps -compilation-database %t/deduce-cdb.json -j 1 > %t/deduce-result.d
+// RUN: cat %t/deduce-result.d | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t --check-prefix=CHECK-DEDUCE
+// CHECK-DEDUCE:      test.obj:
+// CHECK-DEDUCE-NEXT:   [[PREFIX]]/test.c
+// CHECK-DEDUCE-NEXT: test.obj:
+// CHECK-DEDUCE-NEXT:   [[PREFIX]]/test.c
+
+// Check that all the different ways to specify output file are recognized:
+//
+// RUN: sed -e "s|DIR|%/t|g" %t/recognize-cdb.json.template > %t/recognize-cdb.json
+// RUN: clang-scan-deps -compilation-database %t/recognize-cdb.json -j 1 > %t/recognize-result.d
+// RUN: cat %t/recognize-result.d | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t --check-prefix=CHECK-RECOGNIZE
+// CHECK-RECOGNIZE:      [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+// CHECK-RECOGNIZE-NEXT: [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+// CHECK-RECOGNIZE-NEXT: [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+// CHECK-RECOGNIZE-NEXT: [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+// CHECK-RECOGNIZE-NEXT: [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+// CHECK-RECOGNIZE-NEXT: [[PREFIX]]/test.o:
+// CHECK-RECOGNIZE-NEXT:   [[PREFIX]]/test.c
+
+// Check that the last argument specifying the output path wins.
+//
+// RUN: sed -e "s|DIR|%/t|g" %t/last-arg-cdb.json.template > %t/last-arg-cdb.json
+// RUN: clang-scan-deps -compilation-database %t/last-arg-cdb.json > %t/last-arg-result.d
+// RUN: cat %t/last-arg-result.d | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t --check-prefix=CHECK-LAST
+// CHECK-LAST:      [[PREFIX]]/last.o:
+// CHECK-LAST-NEXT:   [[PREFIX]]/test.c
diff --git a/clang/test/ClangScanDeps/cl-resource-dir.c b/clang/test/ClangScanDeps/cl-resource-dir.c
new file mode 100644
--- /dev/null
+++ b/clang/test/ClangScanDeps/cl-resource-dir.c
@@ -0,0 +1,34 @@
+// This test checks that the clang-cl compiler is correctly invoked to deduce resource directory.
+
+// REQUIRES: shell
+
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+
+//--- cdb.json.template
+[{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "DIR/clang-cl /c /o DIR/test.o -- DIR/test.c"
+}]
+
+//--- clang-cl
+#!/bin/sh
+
+# This is a fake compiler that should be invoked the clang-cl way to print the resource directory.
+
+if [ "$1" = "/clang:-print-resource-dir" ]; then
+  echo "/pass"
+else
+  echo "/fail"
+fi;
+
+//--- test.c
+
+// RUN: chmod +x %t/clang-cl
+// RUN: sed -e "s|DIR|%/t|g" %t/cdb.json.template > %t/cdb.json
+// RUN: clang-scan-deps -compilation-database %t/cdb.json --resource-dir-recipe invoke-compiler \
+// RUN:   --format experimental-full > %t/result.json
+// RUN: cat %t/result.json | sed 's:\\\\\?:/:g' | FileCheck %s
+// CHECK:      "-resource-dir"
+// CHECK-NEXT: "/pass"
diff --git a/clang/test/ClangScanDeps/cl-xclang.c b/clang/test/ClangScanDeps/cl-xclang.c
new file mode 100644
--- /dev/null
+++ b/clang/test/ClangScanDeps/cl-xclang.c
@@ -0,0 +1,20 @@
+// This test checks that '-Xclang' arguments are ignored during the clang-cl command line adjustment.
+// This prevents interpreting '-Xclang -I -Xclang /opt/include' as '/o pt/include' (output path).
+
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+
+//--- cdb.json.template
+[{
+  "file": "DIR/test.c",
+  "directory": "DIR",
+  "command": "clang-cl /c /o DIR/test.o -Xclang -I -Xclang /opt/include -- DIR/test.c"
+}]
+
+//--- test.c
+
+// RUN: sed -e "s|DIR|%/t|g" %t/cdb.json.template > %t/cdb.json
+// RUN: clang-scan-deps -compilation-database %t/cdb.json > %t/result.d
+// RUN: cat %t/result.d | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t
+// CHECK:      [[PREFIX]]/test.o:
+// CHECK-NEXT:   [[PREFIX]]/test.c
diff --git a/clang/test/ClangScanDeps/error.cpp b/clang/test/ClangScanDeps/error.cpp
--- a/clang/test/ClangScanDeps/error.cpp
+++ b/clang/test/ClangScanDeps/error.cpp
@@ -3,16 +3,11 @@
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/regular_cdb_input.cpp
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/regular_cdb.json > %t.cdb
-// RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/regular_cdb_clangcl.json > %t_clangcl.cdb
 //
 // RUN: not clang-scan-deps -compilation-database %t.cdb -j 1 2>%t.dir/errs
 // RUN: echo EOF >> %t.dir/errs
 // RUN: FileCheck %s --input-file %t.dir/errs
 
-// RUN: not clang-scan-deps -compilation-database %t_clangcl.cdb -j 1 2>%t.dir/errs_clangcl
-// RUN: echo EOF >> %t.dir/errs_clangcl
-// RUN: FileCheck %s --input-file %t.dir/errs_clangcl
-
 #include "missing.h"
 
 // CHECK: Error while scanning dependencies
diff --git a/clang/test/ClangScanDeps/has_include_if_elif.cpp b/clang/test/ClangScanDeps/has_include_if_elif.cpp
--- a/clang/test/ClangScanDeps/has_include_if_elif.cpp
+++ b/clang/test/ClangScanDeps/has_include_if_elif.cpp
@@ -2,7 +2,6 @@
 // RUN: rm -rf %t.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/has_include_if_elif2.cpp
-// RUN: cp %s %t.dir/has_include_if_elif2_clangcl.cpp
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/header.h %t.dir/Inputs/header.h
 // RUN: cp %S/Inputs/header.h %t.dir/Inputs/header2.h
@@ -37,9 +36,3 @@
 // CHECK-NEXT: Inputs{{/|\\}}header2.h
 // CHECK-NEXT: Inputs{{/|\\}}header3.h
 // CHECK-NEXT: Inputs{{/|\\}}header4.h
-
-// CHECK: has_include_if_elif2_clangcl.cpp
-// CHECK-NEXT: Inputs{{/|\\}}header.h
-// CHECK-NEXT: Inputs{{/|\\}}header2.h
-// CHECK-NEXT: Inputs{{/|\\}}header3.h
-// CHECK-NEXT: Inputs{{/|\\}}header4.h
diff --git a/clang/test/ClangScanDeps/header_stat_before_open.m b/clang/test/ClangScanDeps/header_stat_before_open.m
--- a/clang/test/ClangScanDeps/header_stat_before_open.m
+++ b/clang/test/ClangScanDeps/header_stat_before_open.m
@@ -2,7 +2,6 @@
 // RUN: rm -rf %t.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/header_stat_before_open_input.m
-// RUN: cp %s %t.dir/header_stat_before_open_input_clangcl.m
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp -R %S/Inputs/frameworks %t.dir/Inputs/frameworks
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/header_stat_before_open_cdb.json > %t.cdb
@@ -17,8 +16,3 @@
 // CHECK-NEXT: header_stat_before_open_input.m
 // CHECK-NEXT: Inputs{{/|\\}}frameworks{{/|\\}}Framework.framework{{/|\\}}Headers{{/|\\}}Framework.h
 // CHECK-NEXT: Inputs{{/|\\}}frameworks{{/|\\}}Framework.framework{{/|\\}}PrivateHeaders{{/|\\}}PrivateHeader.h
-
-// CHECK: header_stat_before_open_input_clangcl.o
-// CHECK-NEXT: header_stat_before_open_input_clangcl.m
-// CHECK-NEXT: Inputs{{/|\\}}frameworks{{/|\\}}Framework.framework{{/|\\}}Headers{{/|\\}}Framework.h
-// CHECK-NEXT: Inputs{{/|\\}}frameworks{{/|\\}}Framework.framework{{/|\\}}PrivateHeaders{{/|\\}}PrivateHeader.h
diff --git a/clang/test/ClangScanDeps/headerwithdirname.cpp b/clang/test/ClangScanDeps/headerwithdirname.cpp
--- a/clang/test/ClangScanDeps/headerwithdirname.cpp
+++ b/clang/test/ClangScanDeps/headerwithdirname.cpp
@@ -4,7 +4,6 @@
 // RUN: mkdir -p %t.dir
 // RUN: mkdir -p %t.dir/foodir
 // RUN: cp %s %t.dir/headerwithdirname_input.cpp
-// RUN: cp %s %t.dir/headerwithdirname_input_clangcl.cpp
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/foodir %t.dir/Inputs/foodir
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/headerwithdirname.json > %t.cdb
@@ -16,7 +15,3 @@
 // CHECK: headerwithdirname_input{{\.o|.*\.s}}
 // CHECK-NEXT: headerwithdirname_input.cpp
 // CHECK-NEXT: Inputs{{/|\\}}foodir
-
-// CHECK: headerwithdirname_input_clangcl.o
-// CHECK-NEXT: headerwithdirname_input_clangcl.cpp
-// CHECK-NEXT: Inputs{{/|\\}}foodir
diff --git a/clang/test/ClangScanDeps/headerwithdirnamefollowedbyinclude.cpp b/clang/test/ClangScanDeps/headerwithdirnamefollowedbyinclude.cpp
--- a/clang/test/ClangScanDeps/headerwithdirnamefollowedbyinclude.cpp
+++ b/clang/test/ClangScanDeps/headerwithdirnamefollowedbyinclude.cpp
@@ -7,7 +7,6 @@
 
 // RUN: cp %S/Inputs/header.h %t.dir/foodir/foodirheader.h
 // RUN: cp %s %t.dir/headerwithdirname_input.cpp
-// RUN: cp %s %t.dir/headerwithdirname_input_clangcl.cpp
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/foodir %t.dir/Inputs/foodir
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/headerwithdirnamefollowedbyinclude.json > %t.cdb
@@ -20,7 +19,3 @@
 // CHECK: headerwithdirname_input{{\.o|.*\.s}}
 // CHECK-NEXT: headerwithdirname_input.cpp
 // CHECK-NEXT: Inputs{{/|\\}}foodir
-
-// CHECK: headerwithdirname_input_clangcl.o
-// CHECK-NEXT: headerwithdirname_input_clangcl.cpp
-// CHECK-NEXT: Inputs{{/|\\}}foodir
diff --git a/clang/test/ClangScanDeps/modules-fmodule-name-no-module-built.m b/clang/test/ClangScanDeps/modules-fmodule-name-no-module-built.m
--- a/clang/test/ClangScanDeps/modules-fmodule-name-no-module-built.m
+++ b/clang/test/ClangScanDeps/modules-fmodule-name-no-module-built.m
@@ -43,7 +43,7 @@
 // CHECK-NEXT:       "command-line": [
 // CHECK:              "-fno-implicit-modules"
 // CHECK-NEXT:         "-fno-implicit-module-maps"
-// CHECK-NEXT:         "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H2]]/header2-{{[A-Z0-9]+}}.pcm"
+// CHECK-NEXT:         "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H2]]/header2-{{[A-Z0-9]+}}.pcm"
 // CHECK-NEXT:       ],
 // CHECK-NEXT:       "file-deps": [
 // CHECK-NEXT:         "[[PREFIX]]/modules-fmodule-name-no-module-built.m"
diff --git a/clang/test/ClangScanDeps/modules-full-by-mod-name.cpp b/clang/test/ClangScanDeps/modules-full-by-mod-name.cpp
--- a/clang/test/ClangScanDeps/modules-full-by-mod-name.cpp
+++ b/clang/test/ClangScanDeps/modules-full-by-mod-name.cpp
@@ -9,15 +9,10 @@
 // RUN: cp %S/Inputs/header2.h %t.dir/Inputs/header2.h
 // RUN: cp %S/Inputs/module.modulemap %t.dir/Inputs/module.modulemap
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb_by_mod_name.json > %t.cdb
-// RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb_clangcl_by_mod_name.json > %t_clangcl.cdb
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 4 -format experimental-full \
 // RUN:   -mode preprocess-minimized-sources -module-name=header1 > %t.result
 // RUN: cat %t.result | sed 's:\\\\\?:/:g' | FileCheck -DPREFIX=%/t.dir --check-prefixes=CHECK %s
-//
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 4 -format experimental-full \
-// RUN:   -mode preprocess-minimized-sources -module-name=header1 > %t_clangcl.result
-// RUN: cat %t_clangcl.result | sed 's:\\\\\?:/:g' | FileCheck -DPREFIX=%/t.dir --check-prefixes=CHECK %s
 
 // CHECK:      {
 // CHECK-NEXT:   "modules": [
diff --git a/clang/test/ClangScanDeps/modules-full.cpp b/clang/test/ClangScanDeps/modules-full.cpp
--- a/clang/test/ClangScanDeps/modules-full.cpp
+++ b/clang/test/ClangScanDeps/modules-full.cpp
@@ -8,7 +8,6 @@
 // RUN: cp %S/Inputs/header2.h %t.dir/Inputs/header2.h
 // RUN: cp %S/Inputs/module.modulemap %t.dir/Inputs/module.modulemap
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb.json > %t.cdb
-// RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb_clangcl.json > %t_clangcl.cdb
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 4 -format experimental-full \
 // RUN:   -mode preprocess-minimized-sources > %t.result
@@ -22,10 +21,6 @@
 // RUN:   -generate-modules-path-args -module-files-dir %t.dir/custom \
 // RUN:   -mode preprocess-minimized-sources > %t.result
 // RUN: cat %t.result | sed 's:\\\\\?:/:g' | FileCheck -DPREFIX=%/t.dir --check-prefixes=CHECK,CHECK-CUSTOM %s
-//
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 4 -format experimental-full \
-// RUN:   -mode preprocess-minimized-sources > %t_clangcl.result
-// RUN: cat %t_clangcl.result | sed 's:\\\\\?:/:g' | FileCheck -DPREFIX=%/t.dir --check-prefixes=CHECK,CHECK-NO-ABS %s
 
 #include "header.h"
 
@@ -43,7 +38,7 @@
 // CHECK-NEXT:         "-cc1"
 // CHECK:              "-emit-module"
 // CHECK-NO-ABS-NOT:   "-fmodule-file={{.*}}"
-// CHECK-ABS:          "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H2_DINCLUDE]]/header2-{{[A-Z0-9]+}}.pcm"
+// CHECK-ABS:          "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H2_DINCLUDE]]/header2-{{[A-Z0-9]+}}.pcm"
 // CHECK-CUSTOM:       "-fmodule-file=[[PREFIX]]/custom/[[HASH_H2_DINCLUDE]]/header2-{{[A-Z0-9]+}}.pcm"
 // CHECK-NOT:          "-fimplicit-module-maps"
 // CHECK:              "-fmodule-name=header1"
@@ -104,7 +99,7 @@
 // CHECK:              "-fno-implicit-modules"
 // CHECK-NEXT:         "-fno-implicit-module-maps"
 // CHECK-NO-ABS-NOT:   "-fmodule-file={{.*}}"
-// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
+// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-CUSTOM-NEXT:  "-fmodule-file=[[PREFIX]]/custom/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-NEXT:       ],
 // CHECK-NEXT:       "file-deps": [
@@ -124,7 +119,7 @@
 // CHECK:              "-fno-implicit-modules"
 // CHECK-NEXT:         "-fno-implicit-module-maps"
 // CHECK-NO-ABS-NOT:   "-fmodule-file={{.*}},
-// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
+// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-CUSTOM-NEXT:  "-fmodule-file=[[PREFIX]]/custom/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-NEXT:       ],
 // CHECK-NEXT:       "file-deps": [
@@ -144,7 +139,7 @@
 // CHECK:              "-fno-implicit-modules"
 // CHECK-NEXT:         "-fno-implicit-module-maps"
 // CHECK-NO-ABS-NOT:   "-fmodule-file={{.*}}"
-// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
+// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-CUSTOM-NEXT:  "-fmodule-file=[[PREFIX]]/custom/[[HASH_H1]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-NEXT:       ],
 // CHECK-NEXT:       "file-deps": [
@@ -164,7 +159,7 @@
 // CHECK:              "-fno-implicit-modules"
 // CHECK-NEXT:         "-fno-implicit-module-maps"
 // CHECK-NO-ABS-NOT:   "-fmodule-file={{.*}}"
-// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache{{(_clangcl)?}}/[[HASH_H1_DINCLUDE]]/header1-{{[A-Z0-9]+}}.pcm"
+// CHECK-ABS-NEXT:     "-fmodule-file=[[PREFIX]]/module-cache/[[HASH_H1_DINCLUDE]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-CUSTOM-NEXT:  "-fmodule-file=[[PREFIX]]/custom/[[HASH_H1_DINCLUDE]]/header1-{{[A-Z0-9]+}}.pcm"
 // CHECK-NEXT:       ],
 // CHECK-NEXT:       "file-deps": [
diff --git a/clang/test/ClangScanDeps/modules.cpp b/clang/test/ClangScanDeps/modules.cpp
--- a/clang/test/ClangScanDeps/modules.cpp
+++ b/clang/test/ClangScanDeps/modules.cpp
@@ -1,8 +1,6 @@
 // RUN: rm -rf %t.dir
 // RUN: rm -rf %t.cdb
-// RUN: rm -rf %t_clangcl.cdb
 // RUN: rm -rf %t.module-cache
-// RUN: rm -rf %t.module-cache_clangcl
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/modules_cdb_input.cpp
 // RUN: cp %s %t.dir/modules_cdb_input2.cpp
@@ -11,12 +9,9 @@
 // RUN: cp %S/Inputs/header2.h %t.dir/Inputs/header2.h
 // RUN: cp %S/Inputs/module.modulemap %t.dir/Inputs/module.modulemap
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb.json > %t.cdb
-// RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/modules_cdb_clangcl.json > %t_clangcl.cdb
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 1 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 1 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO %s
 //
 // The output order is non-deterministic when using more than one thread,
 // so check the output using two runs. Note that the 'NOT' check is not used
@@ -25,20 +20,12 @@
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefix=CHECK1 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefix=CHECK1 %s
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess | \
 // RUN:   FileCheck --check-prefix=CHECK1 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess | \
-// RUN:   FileCheck --check-prefix=CHECK1 %s
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefix=CHECK2 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefix=CHECK2 %s
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess | \
 // RUN:   FileCheck --check-prefix=CHECK2 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess | \
-// RUN:   FileCheck --check-prefix=CHECK2 %s
 
 #include "header.h"
 
diff --git a/clang/test/ClangScanDeps/no-werror.cpp b/clang/test/ClangScanDeps/no-werror.cpp
--- a/clang/test/ClangScanDeps/no-werror.cpp
+++ b/clang/test/ClangScanDeps/no-werror.cpp
@@ -2,7 +2,6 @@
 // RUN: rm -rf %t.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/no-werror_input.cpp
-// RUN: cp %s %t.dir/no-werror_input_clangcl.cpp
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/sys-header.h %t.dir/Inputs/sys-header.h
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/no-werror.json > %t.cdb
@@ -15,6 +14,3 @@
 
 // CHECK: no-werror_input.cpp
 // CHECK-NEXT: Inputs{{/|\\}}sys-header.h
-
-// CHECK: no-werror_input_clangcl.cpp
-// CHECK-NEXT: Inputs{{/|\\}}sys-header.h
diff --git a/clang/test/ClangScanDeps/regular_cdb.cpp b/clang/test/ClangScanDeps/regular_cdb.cpp
--- a/clang/test/ClangScanDeps/regular_cdb.cpp
+++ b/clang/test/ClangScanDeps/regular_cdb.cpp
@@ -1,6 +1,5 @@
 // RUN: rm -rf %t.dir
 // RUN: rm -rf %t.cdb
-// RUN: rm -rf %t_clangcl.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/regular_cdb_input.cpp
 // RUN: cp %s %t.dir/regular_cdb_input2.cpp
@@ -8,28 +7,19 @@
 // RUN: cp %S/Inputs/header.h %t.dir/Inputs/header.h
 // RUN: cp %S/Inputs/header2.h %t.dir/Inputs/header2.h
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/regular_cdb.json > %t.cdb
-// RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/regular_cdb_clangcl.json > %t_clangcl.cdb
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 1 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 1 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
 
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 1 -mode preprocess | \
 // RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 1 -mode preprocess | \
-// RUN:   FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
 
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 1 -mode preprocess-minimized-sources \
 // RUN:   -skip-excluded-pp-ranges=0 | FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 1 -mode preprocess-minimized-sources \
-// RUN:   -skip-excluded-pp-ranges=0 | FileCheck --check-prefixes=CHECK1,CHECK2,CHECK2NO,CHECK3 %s
 //
 // Make sure we didn't produce any dependency files!
 // RUN: not cat %t.dir/regular_cdb.d
-// RUN: not cat %t.dir/regular_cdb_clangcl.d
 // RUN: not cat %t.dir/regular_cdb2.d
-// RUN: not cat %t.dir/regular_cdb2_clangcl.d
 //
 // The output order is non-deterministic when using more than one thread,
 // so check the output using two runs. Note that the 'NOT' check is not used
@@ -38,23 +28,15 @@
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefix=CHECK1 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefix=CHECK1 %s
 
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess | \
 // RUN:   FileCheck --check-prefix=CHECK1 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess | \
-// RUN:   FileCheck --check-prefix=CHECK1 %s
 
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess-minimized-sources | \
 // RUN:   FileCheck --check-prefix=CHECK2 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess-minimized-sources | \
-// RUN:   FileCheck --check-prefix=CHECK2 %s
 
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 2 -mode preprocess | \
 // RUN:   FileCheck --check-prefix=CHECK2 %s
-// RUN: clang-scan-deps -compilation-database %t_clangcl.cdb -j 2 -mode preprocess | \
-// RUN:   FileCheck --check-prefix=CHECK2 %s
 
 #include "header.h"
 
diff --git a/clang/test/ClangScanDeps/static-analyzer.c b/clang/test/ClangScanDeps/static-analyzer.c
--- a/clang/test/ClangScanDeps/static-analyzer.c
+++ b/clang/test/ClangScanDeps/static-analyzer.c
@@ -3,7 +3,6 @@
 // RUN: mkdir -p %t.dir
 // Change file name to avoid false positives in CHECK, since "static-analyzer.c" is found in %S.
 // RUN: cp %s %t.dir/static-analyzer_clang.c
-// RUN: cp %s %t.dir/static-analyzer_clangcl.c
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/header.h %t.dir/Inputs/analyze_header_input.h
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/static-analyzer-cdb.json > %t-cdb.json
@@ -16,6 +15,3 @@
 
 // CHECK: static-analyzer_clang.c
 // CHECK-NEXT: analyze_header_input.h
-
-// CHECK: static-analyzer_clangcl.c
-// CHECK-NEXT: analyze_header_input.h
diff --git a/clang/test/ClangScanDeps/strip_diag_serialize.cpp b/clang/test/ClangScanDeps/strip_diag_serialize.cpp
--- a/clang/test/ClangScanDeps/strip_diag_serialize.cpp
+++ b/clang/test/ClangScanDeps/strip_diag_serialize.cpp
@@ -2,7 +2,6 @@
 // RUN: rm -rf %t.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/strip_diag_serialize_input.cpp
-// RUN: cp %s %t.dir/strip_diag_serialize_input_clangcl.cpp
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/strip_diag_serialize.json > %t.cdb
 //
 // RUN: clang-scan-deps -compilation-database %t.cdb -j 1 2>&1 | FileCheck %s
diff --git a/clang/test/ClangScanDeps/target-filename.cpp b/clang/test/ClangScanDeps/target-filename.cpp
--- a/clang/test/ClangScanDeps/target-filename.cpp
+++ b/clang/test/ClangScanDeps/target-filename.cpp
@@ -21,27 +21,3 @@
 
 // CHECK: target-filename_input.o:
 // CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-a.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-b.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-c.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-d.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-e.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-lastf.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-lastg.o:
-// CHECK-NEXT: target-filename_input.cpp
-
-// CHECK-NEXT: clangcl-lasth.o:
-// CHECK-NEXT: target-filename_input.cpp
diff --git a/clang/test/ClangScanDeps/vfsoverlay.cpp b/clang/test/ClangScanDeps/vfsoverlay.cpp
--- a/clang/test/ClangScanDeps/vfsoverlay.cpp
+++ b/clang/test/ClangScanDeps/vfsoverlay.cpp
@@ -2,7 +2,6 @@
 // RUN: rm -rf %t.cdb
 // RUN: mkdir -p %t.dir
 // RUN: cp %s %t.dir/vfsoverlay_input.cpp
-// RUN: cp %s %t.dir/vfsoverlay_input_clangcl.cpp
 // RUN: sed -e "s|DIR|%/t.dir|g" %S/Inputs/vfsoverlay.yaml > %t.dir/vfsoverlay.yaml
 // RUN: mkdir %t.dir/Inputs
 // RUN: cp %S/Inputs/header.h %t.dir/Inputs/header.h
@@ -16,7 +15,3 @@
 // CHECK: vfsoverlay_input.o
 // CHECK-NEXT: vfsoverlay_input.cpp
 // CHECK-NEXT: Inputs{{/|\\}}header.h
-
-// CHECK: vfsoverlay_input_clangcl.o
-// CHECK-NEXT: vfsoverlay_input_clangcl.cpp
-// CHECK-NEXT: Inputs{{/|\\}}header.h