This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG64bc44f5ddfb: [llvm-rc] Run clang to preprocess input files 
(authored by mstorsjo).

Changed prior to commit:
  https://reviews.llvm.org/D100755?vs=338969&id=339141#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100755/new/

https://reviews.llvm.org/D100755

Files:
  clang/test/CMakeLists.txt
  clang/test/Preprocessor/Inputs/llvm-rc.h
  clang/test/Preprocessor/llvm-rc.rc
  clang/test/lit.cfg.py
  llvm/test/tools/llvm-rc/absolute.test
  llvm/test/tools/llvm-rc/codepage.test
  llvm/test/tools/llvm-rc/cpp-output.test
  llvm/test/tools/llvm-rc/flags.test
  llvm/test/tools/llvm-rc/helpmsg.test
  llvm/test/tools/llvm-rc/include-paths.test
  llvm/test/tools/llvm-rc/language.test
  llvm/test/tools/llvm-rc/memoryflags-stringtable.test
  llvm/test/tools/llvm-rc/memoryflags.test
  llvm/test/tools/llvm-rc/not-expr.test
  llvm/test/tools/llvm-rc/parser-expr.test
  llvm/test/tools/llvm-rc/parser.test
  llvm/test/tools/llvm-rc/preproc.test
  llvm/test/tools/llvm-rc/tag-accelerators.test
  llvm/test/tools/llvm-rc/tag-dialog.test
  llvm/test/tools/llvm-rc/tag-escape.test
  llvm/test/tools/llvm-rc/tag-html.test
  llvm/test/tools/llvm-rc/tag-icon-cursor.test
  llvm/test/tools/llvm-rc/tag-menu.test
  llvm/test/tools/llvm-rc/tag-stringtable.test
  llvm/test/tools/llvm-rc/tag-user.test
  llvm/test/tools/llvm-rc/tag-versioninfo.test
  llvm/test/tools/llvm-rc/tokenizer.test
  llvm/test/tools/llvm-rc/versioninfo-padding.test
  llvm/tools/llvm-rc/Opts.td
  llvm/tools/llvm-rc/llvm-rc.cpp

Index: llvm/tools/llvm-rc/llvm-rc.cpp
===================================================================
--- llvm/tools/llvm-rc/llvm-rc.cpp
+++ llvm/tools/llvm-rc/llvm-rc.cpp
@@ -17,17 +17,22 @@
 #include "ResourceScriptStmt.h"
 #include "ResourceScriptToken.h"
 
+#include "llvm/ADT/Triple.h"
 #include "llvm/Option/Arg.h"
 #include "llvm/Option/ArgList.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Host.h"
 #include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
 #include "llvm/Support/Signals.h"
+#include "llvm/Support/StringSaver.h"
 #include "llvm/Support/raw_ostream.h"
 
 #include <algorithm>
@@ -71,12 +76,114 @@
 };
 
 static ExitOnError ExitOnErr;
+static FileRemover TempPreprocFile;
 
 LLVM_ATTRIBUTE_NORETURN static void fatalError(const Twine &Message) {
   errs() << Message << "\n";
   exit(1);
 }
 
+std::string createTempFile(const Twine &Prefix, StringRef Suffix) {
+  std::error_code EC;
+  SmallString<128> FileName;
+  if ((EC = sys::fs::createTemporaryFile(Prefix, Suffix, FileName)))
+    fatalError("Unable to create temp file: " + EC.message());
+  return static_cast<std::string>(FileName);
+}
+
+ErrorOr<std::string> findClang(const char *Argv0) {
+  StringRef Parent = llvm::sys::path::parent_path(Argv0);
+  ErrorOr<std::string> Path = std::error_code();
+  if (!Parent.empty()) {
+    // First look for the tool with all potential names in the specific
+    // directory of Argv0, if known
+    for (const auto *Name : {"clang", "clang-cl"}) {
+      Path = sys::findProgramByName(Name, Parent);
+      if (Path)
+        return Path;
+    }
+  }
+  // If no parent directory known, or not found there, look everywhere in PATH
+  for (const auto *Name : {"clang", "clang-cl"}) {
+    Path = sys::findProgramByName(Name);
+    if (Path)
+      return Path;
+  }
+  return Path;
+}
+
+std::string getClangClTriple() {
+  Triple T(sys::getDefaultTargetTriple());
+  T.setOS(llvm::Triple::Win32);
+  T.setVendor(llvm::Triple::PC);
+  T.setEnvironment(llvm::Triple::MSVC);
+  T.setObjectFormat(llvm::Triple::COFF);
+  return T.str();
+}
+
+bool preprocess(StringRef Src, StringRef Dst, opt::InputArgList &InputArgs,
+                const char *Argv0) {
+  std::string Clang;
+  if (InputArgs.hasArg(OPT__HASH_HASH_HASH)) {
+    Clang = "clang";
+  } else {
+    ErrorOr<std::string> ClangOrErr = findClang(Argv0);
+    if (ClangOrErr) {
+      Clang = *ClangOrErr;
+    } else {
+      errs() << "llvm-rc: Unable to find clang, skipping preprocessing."
+             << "\n";
+      errs() << "Pass -no-cpp to disable preprocessing. This will be an error "
+                "in the future."
+             << "\n";
+      return false;
+    }
+  }
+  std::string PreprocTriple = getClangClTriple();
+
+  SmallVector<StringRef, 8> Args = {
+      Clang, "--driver-mode=gcc", "-target", PreprocTriple, "-E",
+      "-xc", "-DRC_INVOKED",      Src,       "-o",          Dst};
+  if (InputArgs.hasArg(OPT_noinclude)) {
+#ifdef _WIN32
+    ::_putenv("INCLUDE=");
+#else
+    ::unsetenv("INCLUDE");
+#endif
+  }
+  for (const auto *Arg :
+       InputArgs.filtered(OPT_includepath, OPT_define, OPT_undef)) {
+    switch (Arg->getOption().getID()) {
+    case OPT_includepath:
+      Args.push_back("-I");
+      break;
+    case OPT_define:
+      Args.push_back("-D");
+      break;
+    case OPT_undef:
+      Args.push_back("-U");
+      break;
+    }
+    Args.push_back(Arg->getValue());
+  }
+  if (InputArgs.hasArg(OPT__HASH_HASH_HASH) || InputArgs.hasArg(OPT_verbose)) {
+    for (const auto &A : Args) {
+      outs() << " ";
+      sys::printArg(outs(), A, InputArgs.hasArg(OPT__HASH_HASH_HASH));
+    }
+    outs() << "\n";
+    if (InputArgs.hasArg(OPT__HASH_HASH_HASH))
+      exit(0);
+  }
+  // The llvm Support classes don't handle reading from stdout of a child
+  // process; otherwise we could avoid using a temp file.
+  int Res = sys::ExecuteAndWait(Clang, Args);
+  if (Res) {
+    fatalError("llvm-rc: Preprocessing failed.");
+  }
+  return true;
+}
+
 } // anonymous namespace
 
 int main(int Argc, const char **Argv) {
@@ -106,9 +213,17 @@
     fatalError("Exactly one input file should be provided.");
   }
 
+  std::string PreprocessedFile = InArgsInfo[0];
+  if (!InputArgs.hasArg(OPT_no_preprocess)) {
+    std::string OutFile = createTempFile("preproc", "rc");
+    TempPreprocFile.setFile(OutFile);
+    if (preprocess(InArgsInfo[0], OutFile, InputArgs, Argv[0]))
+      PreprocessedFile = OutFile;
+  }
+
   // Read and tokenize the input file.
   ErrorOr<std::unique_ptr<MemoryBuffer>> File =
-      MemoryBuffer::getFile(InArgsInfo[0]);
+      MemoryBuffer::getFile(PreprocessedFile);
   if (!File) {
     fatalError("Error opening file '" + Twine(InArgsInfo[0]) +
                "': " + File.getError().message());
Index: llvm/tools/llvm-rc/Opts.td
===================================================================
--- llvm/tools/llvm-rc/Opts.td
+++ llvm/tools/llvm-rc/Opts.td
@@ -17,13 +17,13 @@
 
 def fileout : JS<"FO", "Change the output file location.">;
 
-def define : S<"D", "Define a symbol for the C preprocessor.">;
-def undef : S<"U", "Undefine a symbol for the C preprocessor.">;
+def define : JS<"D", "Define a symbol for the C preprocessor.">;
+def undef : JS<"U", "Undefine a symbol for the C preprocessor.">;
 
 def lang_id : JS<"L", "Set the default language identifier.">;
 def lang_name : S<"LN", "Set the default language name.">;
 
-def includepath : S<"I", "Add an include path.">;
+def includepath : JS<"I", "Add an include path.">;
 def noinclude : F<"X", "Ignore 'include' variable.">;
 
 def add_null : F<"N", "Null-terminate all strings in the string table.">;
@@ -34,9 +34,16 @@
 def help : F<"?", "Display this help and exit.">;
 def h : F<"H", "Display this help and exit.">, Alias<help>;
 
+def codepage : JS<"C", "Set the codepage used for input strings.">;
+
+// llvm-rc specific options:
+
 def dry_run : F<"dry-run", "Don't compile the input; only try to parse it.">;
 
-def codepage : JS<"C", "Set the codepage used for input strings.">;
+def no_preprocess : F<"no-preprocess", "Don't try to preprocess the input file.">;
+
+// Print (but do not run) the commands to run for preprocessing
+def _HASH_HASH_HASH : F_nodoc<"###">;
 
 // Unused switches (at least for now). These will stay unimplemented
 // in an early stage of development and can be ignored. However, we need to
Index: llvm/test/tools/llvm-rc/versioninfo-padding.test
===================================================================
--- llvm/test/tools/llvm-rc/versioninfo-padding.test
+++ llvm/test/tools/llvm-rc/versioninfo-padding.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/versioninfo-padding.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/versioninfo-padding.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): VERSIONINFO (ID 16)
Index: llvm/test/tools/llvm-rc/tokenizer.test
===================================================================
--- llvm/test/tools/llvm-rc/tokenizer.test
+++ llvm/test/tools/llvm-rc/tokenizer.test
@@ -1,4 +1,4 @@
-; RUN: not llvm-rc /V /FO %t.res -- %p/Inputs/tokens.rc | FileCheck %s
+; RUN: not llvm-rc -no-preprocess /V /FO %t.res -- %p/Inputs/tokens.rc | FileCheck %s
 ; llvm-rc fails now on this sample because it is an invalid resource file
 ; script. We silence the error message and just analyze the output.
 
Index: llvm/test/tools/llvm-rc/tag-versioninfo.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-versioninfo.test
+++ llvm/test/tools/llvm-rc/tag-versioninfo.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-versioninfo.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-versioninfo.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): VERSIONINFO (ID 16)
@@ -56,11 +56,11 @@
 ; CHECK-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-versioninfo-mixed-ints-strings.rc 2>&1 | FileCheck %s --check-prefix STRINT
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-versioninfo-mixed-ints-strings.rc 2>&1 | FileCheck %s --check-prefix STRINT
 ; STRINT: llvm-rc: Error in VERSIONINFO statement (ID 1):
 ; STRINT-NEXT: VALUE "FileDescription" cannot contain both strings and integers
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-versioninfo-word-too-large.rc 2>&1 | FileCheck %s --check-prefix WORD
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-versioninfo-word-too-large.rc 2>&1 | FileCheck %s --check-prefix WORD
 ; WORD: llvm-rc: Error in VERSIONINFO statement (ID 1):
 ; WORD-NEXT: VERSIONINFO integer value (65536) does not fit in 16 bits.
Index: llvm/test/tools/llvm-rc/tag-user.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-user.test
+++ llvm/test/tools/llvm-rc/tag-user.test
@@ -2,7 +2,7 @@
 ; RUN: mkdir %t
 ; RUN: cd %t
 ; RUN: cp %p/Inputs/bitmap.bmp .
-; RUN: llvm-rc /FO %t/tag-user.res -- %p/Inputs/tag-user.rc
+; RUN: llvm-rc -no-preprocess /FO %t/tag-user.res -- %p/Inputs/tag-user.rc
 ; RUN: llvm-readobj %t/tag-user.res | FileCheck %s
 
 ; CHECK:      Resource type (int): ID 500
Index: llvm/test/tools/llvm-rc/tag-stringtable.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-stringtable.test
+++ llvm/test/tools/llvm-rc/tag-stringtable.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-stringtable-basic.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-stringtable-basic.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): STRINGTABLE (ID 6)
@@ -81,7 +81,7 @@
 ; CHECK-NEXT: )
 
 
-; RUN: llvm-rc /N /FO %t0 -- %p/Inputs/tag-stringtable-basic.rc
+; RUN: llvm-rc -no-preprocess /N /FO %t0 -- %p/Inputs/tag-stringtable-basic.rc
 ; RUN: llvm-readobj %t0 | FileCheck %s --check-prefix=NULL
 
 ; NULL:      Resource type (int): STRINGTABLE (ID 6)
@@ -166,5 +166,5 @@
 ; NULL-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-stringtable-same-ids.rc 2>&1 | FileCheck %s --check-prefix SAMEIDS
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-stringtable-same-ids.rc 2>&1 | FileCheck %s --check-prefix SAMEIDS
 ; SAMEIDS: llvm-rc: Multiple STRINGTABLE strings located under ID 1
Index: llvm/test/tools/llvm-rc/tag-menu.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-menu.test
+++ llvm/test/tools/llvm-rc/tag-menu.test
@@ -1,9 +1,9 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-menu.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-menu.rc
 ; RUN: llvm-readobj %t | FileCheck %s --check-prefix=MENU
 
-; Test running llvm-rc without an explicit output file.
+; Test running llvm-rc -no-preprocess without an explicit output file.
 ; RUN: cp %p/Inputs/tag-menu.rc %t.implicit.rc
-; RUN: llvm-rc -- %t.implicit.rc
+; RUN: llvm-rc -no-preprocess -- %t.implicit.rc
 ; RUN: llvm-readobj %t.implicit.res | FileCheck --check-prefix=MENU %s
 
 ; MENU: Resource type (int): MENU (ID 4)
@@ -74,7 +74,7 @@
 ; MENU-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-menu-bad-menuitem-id.rc 2>&1 | FileCheck %s --check-prefix BADID
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-menu-bad-menuitem-id.rc 2>&1 | FileCheck %s --check-prefix BADID
 
 ; BADID: llvm-rc: Error in MENU statement (ID 1):
 ; BADID-NEXT: MENUITEM action ID (100000) does not fit in 16 bits.
Index: llvm/test/tools/llvm-rc/tag-icon-cursor.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-icon-cursor.test
+++ llvm/test/tools/llvm-rc/tag-icon-cursor.test
@@ -1,7 +1,7 @@
 ; RUN: rm -rf %t
 ; RUN: mkdir %t
 
-; RUN: llvm-rc /FO %t/tag-icon-cursor.res -- %p/Inputs/tag-icon-cursor.rc
+; RUN: llvm-rc -no-preprocess /FO %t/tag-icon-cursor.res -- %p/Inputs/tag-icon-cursor.rc
 ; RUN: llvm-readobj %t/tag-icon-cursor.res | FileCheck %s
 
 ; CHECK: Resource type (int): CURSOR (ID 1)
@@ -320,12 +320,12 @@
 ; CHECK-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t/1 -- %p/Inputs/tag-icon-cursor-nonexistent.rc 2>&1 | FileCheck %s --check-prefix NOFILE
+; RUN: not llvm-rc -no-preprocess /FO %t/1 -- %p/Inputs/tag-icon-cursor-nonexistent.rc 2>&1 | FileCheck %s --check-prefix NOFILE
 ; NOFILE: llvm-rc: Error in CURSOR statement (ID 500):
 ; NOFILE-NEXT: file not found : this-file-does-not-exist.cur
 
 
-; RUN: not llvm-rc /FO %t/1 -- %p/Inputs/tag-icon-cursor-nonsense.rc 2>&1 | FileCheck %s --check-prefix NONSENSE
+; RUN: not llvm-rc -no-preprocess /FO %t/1 -- %p/Inputs/tag-icon-cursor-nonsense.rc 2>&1 | FileCheck %s --check-prefix NONSENSE
 
 ; NONSENSE: llvm-rc: Error in ICON statement (ID 1):
 ; NONSENSE-NEXT: Incorrect icon/cursor Reserved field; should be 0.
Index: llvm/test/tools/llvm-rc/tag-html.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-html.test
+++ llvm/test/tools/llvm-rc/tag-html.test
@@ -1,6 +1,6 @@
 ; RUN: rm -rf %t && mkdir %t && cd %t
 ; RUN: cp %p/Inputs/webpage*.html .
-; RUN: llvm-rc /FO %t/tag-html.res -- %p/Inputs/tag-html.rc
+; RUN: llvm-rc -no-preprocess /FO %t/tag-html.res -- %p/Inputs/tag-html.rc
 ; RUN: llvm-readobj %t/tag-html.res | FileCheck %s --check-prefix HTML
 
 ; HTML: Resource type (int): HTML (ID 23)
Index: llvm/test/tools/llvm-rc/tag-escape.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-escape.test
+++ llvm/test/tools/llvm-rc/tag-escape.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-escape.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-escape.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): MENU (ID 4)
Index: llvm/test/tools/llvm-rc/tag-dialog.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-dialog.test
+++ llvm/test/tools/llvm-rc/tag-dialog.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-dialog.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog.rc
 ; RUN: llvm-readobj %t | FileCheck %s --check-prefix=DIALOG
 
 ; DIALOG: Resource type (int): DIALOG (ID 5)
@@ -163,7 +163,7 @@
 ; DIALOG-NEXT: )
 
 
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-dialog-headers.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-headers.rc
 ; RUN: llvm-readobj %t | FileCheck %s --check-prefix=HEADERS
 
 ; HEADERS: Resource type (int): DIALOG (ID 5)
@@ -636,73 +636,73 @@
 ; HEADERS-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-large-coord.rc 2>&1 | FileCheck %s --check-prefix COORD1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-large-coord.rc 2>&1 | FileCheck %s --check-prefix COORD1
 
 ; COORD1: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; COORD1-NEXT: Dialog x-coordinate (50000) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-large-coord-neg.rc 2>&1 | FileCheck %s --check-prefix COORD2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-large-coord-neg.rc 2>&1 | FileCheck %s --check-prefix COORD2
 
 ; COORD2: llvm-rc: Error in DIALOG statement (ID 1):
 ; COORD2-NEXT: Dialog y-coordinate (-40000) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-large-size.rc 2>&1 | FileCheck %s --check-prefix COORD3
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-large-size.rc 2>&1 | FileCheck %s --check-prefix COORD3
 
 ; COORD3: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; COORD3-NEXT: Dialog height (32768) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-negative-size.rc 2>&1 | FileCheck %s --check-prefix COORD4
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-negative-size.rc 2>&1 | FileCheck %s --check-prefix COORD4
 
 ; COORD4: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; COORD4-NEXT: Dialog width (-50) cannot be negative.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-large-coord.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-large-coord.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD1
 
 ; CTL-COORD1: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; CTL-COORD1-NEXT: Error in LTEXT control (ID 1):
 ; CTL-COORD1-NEXT: Dialog control x-coordinate (44444) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-large-coord-neg.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-large-coord-neg.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD2
 
 ; CTL-COORD2: llvm-rc: Error in DIALOG statement (ID 1):
 ; CTL-COORD2-NEXT: Error in LTEXT control (ID 1):
 ; CTL-COORD2-NEXT: Dialog control y-coordinate (-32769) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-large-size.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD3
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-large-size.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD3
 
 ; CTL-COORD3: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; CTL-COORD3-NEXT: Error in LTEXT control (ID 1):
 ; CTL-COORD3-NEXT: Dialog control width (40000) does not fit in 16-bit signed integer type.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-negative-size.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD4
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-negative-size.rc 2>&1 | FileCheck %s --check-prefix CTL-COORD4
 
 ; CTL-COORD4: llvm-rc: Error in DIALOG statement (ID 1):
 ; CTL-COORD4-NEXT: Error in LTEXT control (ID 1):
 ; CTL-COORD4-NEXT: Dialog control height (-700) cannot be negative.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-large-id.rc 2>&1 | FileCheck %s --check-prefix CTL-ID
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-large-id.rc 2>&1 | FileCheck %s --check-prefix CTL-ID
 
 ; CTL-ID: llvm-rc: Error in DIALOG statement (ID 5):
 ; CTL-ID-NEXT: Error in RTEXT control (ID 100000):
 ; CTL-ID-NEXT: Control ID in simple DIALOG resource (100000) does not fit in 16 bits.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-ctl-large-ref-id.rc 2>&1 | FileCheck %s --check-prefix CTL-REF-ID
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-ctl-large-ref-id.rc 2>&1 | FileCheck %s --check-prefix CTL-REF-ID
 
 ; CTL-REF-ID: llvm-rc: Error in DIALOGEX statement (ID 1):
 ; CTL-REF-ID-NEXT: Error in CTEXT control (ID 42):
 ; CTL-REF-ID-NEXT: Control reference ID (65536) does not fit in 16 bits.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-dialog-bad-style.rc 2>&1 | FileCheck %s --check-prefix STYLE
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-dialog-bad-style.rc 2>&1 | FileCheck %s --check-prefix STYLE
 
 ; STYLE: llvm-rc: Error in DIALOG statement (ID 1):
 ; STYLE-NEXT: 16 higher bits of DIALOG resource style cannot be equal to 0xFFFF
Index: llvm/test/tools/llvm-rc/tag-accelerators.test
===================================================================
--- llvm/test/tools/llvm-rc/tag-accelerators.test
+++ llvm/test/tools/llvm-rc/tag-accelerators.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/tag-accelerators.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators.rc
 ; RUN: llvm-readobj %t | FileCheck %s --check-prefix=ACCELERATORS
 
 ; ACCELERATORS: Resource type (int): ACCELERATOR (ID 9)
@@ -79,79 +79,79 @@
 ; ACCELERATORS-NEXT: )
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-bad-id.rc 2>&1 | FileCheck %s --check-prefix BADID
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-bad-id.rc 2>&1 | FileCheck %s --check-prefix BADID
 
 ; BADID: llvm-rc: Error in ACCELERATORS statement (ID 1):
 ; BADID-NEXT: ACCELERATORS entry ID (1234567) does not fit in 16 bits.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-ascii-virtkey.rc 2>&1 | FileCheck %s --check-prefix ASCII1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-ascii-virtkey.rc 2>&1 | FileCheck %s --check-prefix ASCII1
 
 ; ASCII1: llvm-rc: Error in ACCELERATORS statement (ID 2):
 ; ASCII1-NEXT: Accelerator ID 15: Accelerator can't be both ASCII and VIRTKEY
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-ascii-control.rc 2>&1 | FileCheck %s --check-prefix ASCII2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-ascii-control.rc 2>&1 | FileCheck %s --check-prefix ASCII2
 
 ; ASCII2: llvm-rc: Error in ACCELERATORS statement (ID 2):
 ; ASCII2-NEXT: Accelerator ID 15: Can only apply ALT, SHIFT or CONTROL to VIRTKEY accelerators
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-ascii-shift.rc 2>&1 | FileCheck %s --check-prefix ASCII3
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-ascii-shift.rc 2>&1 | FileCheck %s --check-prefix ASCII3
 
 ; ASCII3: llvm-rc: Error in ACCELERATORS statement (ID 2):
 ; ASCII3-NEXT: Accelerator ID 15: Can only apply ALT, SHIFT or CONTROL to VIRTKEY accelerators
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-ascii-alt.rc 2>&1 | FileCheck %s --check-prefix ASCII4
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-ascii-alt.rc 2>&1 | FileCheck %s --check-prefix ASCII4
 
 ; ASCII4: llvm-rc: Error in ACCELERATORS statement (ID 2):
 ; ASCII4-NEXT: Accelerator ID 15: Can only apply ALT, SHIFT or CONTROL to VIRTKEY accelerators
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-bad-key-id.rc 2>&1 | FileCheck %s --check-prefix BADKEYID
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-bad-key-id.rc 2>&1 | FileCheck %s --check-prefix BADKEYID
 
 ; BADKEYID: llvm-rc: Error in ACCELERATORS statement (ID 9):
 ; BADKEYID-NEXT: Numeric event key ID (1234567) does not fit in 16 bits.
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-too-short.rc 2>&1 | FileCheck %s --check-prefix LENGTH1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-too-short.rc 2>&1 | FileCheck %s --check-prefix LENGTH1
 
 ; LENGTH1: llvm-rc: Error in ACCELERATORS statement (ID 10):
 ; LENGTH1-NEXT: Accelerator ID 12: Accelerator string events should have length 1 or 2
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-too-long.rc 2>&1 | FileCheck %s --check-prefix LENGTH2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-too-long.rc 2>&1 | FileCheck %s --check-prefix LENGTH2
 
 ; LENGTH2: llvm-rc: Error in ACCELERATORS statement (ID 12):
 ; LENGTH2-NEXT: Accelerator ID 5: Accelerator string events should have length 1 or 2
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-only-caret.rc 2>&1 | FileCheck %s --check-prefix CARET1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-only-caret.rc 2>&1 | FileCheck %s --check-prefix CARET1
 
 ; CARET1: llvm-rc: Error in ACCELERATORS statement (ID 555):
 ; CARET1-NEXT: Accelerator ID 100: No character following '^' in accelerator event
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-no-caret.rc 2>&1 | FileCheck %s --check-prefix CARET2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-no-caret.rc 2>&1 | FileCheck %s --check-prefix CARET2
 
 ; CARET2: llvm-rc: Error in ACCELERATORS statement (ID 50):
 ; CARET2-NEXT: Accelerator ID 1: Event string should be one-character, possibly preceded by '^'
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-long-virtkey.rc 2>&1 | FileCheck %s --check-prefix CARET3
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-long-virtkey.rc 2>&1 | FileCheck %s --check-prefix CARET3
 
 ; CARET3: llvm-rc: Error in ACCELERATORS statement (ID 100):
 ; CARET3-NEXT: Accelerator ID 10: VIRTKEY accelerator events can't be preceded by '^'
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-control-nonalpha.rc 2>&1 | FileCheck %s --check-prefix NONALPHA1
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-control-nonalpha.rc 2>&1 | FileCheck %s --check-prefix NONALPHA1
 
 ; NONALPHA1: llvm-rc: Error in ACCELERATORS statement (ID 100):
 ; NONALPHA1-NEXT: Accelerator ID 1: Control character accelerator event should be alphabetic
 
 
-; RUN: not llvm-rc /FO %t -- %p/Inputs/tag-accelerators-virtual-nonalpha.rc 2>&1 | FileCheck %s --check-prefix NONALPHA2
+; RUN: not llvm-rc -no-preprocess /FO %t -- %p/Inputs/tag-accelerators-virtual-nonalpha.rc 2>&1 | FileCheck %s --check-prefix NONALPHA2
 
 ; NONALPHA2: llvm-rc: Error in ACCELERATORS statement (ID 42):
 ; NONALPHA2-NEXT: Accelerator ID 1: Non-alphanumeric characters cannot describe virtual keys
Index: llvm/test/tools/llvm-rc/preproc.test
===================================================================
--- /dev/null
+++ llvm/test/tools/llvm-rc/preproc.test
@@ -0,0 +1,3 @@
+; RUN: llvm-rc -### -i%p "-DFOO1=\"foo bar\"" -UFOO2 -D FOO3 -- %p/Inputs/empty.rc | FileCheck %s
+
+; CHECK: {{^}} "clang" "--driver-mode=gcc" "-target" "{{.*}}-pc-windows-msvc-coff" "-E" "-xc" "-DRC_INVOKED" "{{.*}}empty.rc" "-o" "{{.*}}preproc-{{.*}}.rc" "-I" "{{.*}}" "-D" "FOO1=\"foo bar\"" "-U" "FOO2" "-D" "FOO3"{{$}}
Index: llvm/test/tools/llvm-rc/parser.test
===================================================================
--- llvm/test/tools/llvm-rc/parser.test
+++ llvm/test/tools/llvm-rc/parser.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /dry-run /V -- %p/Inputs/parser-correct-everything.rc | FileCheck %s --check-prefix PGOOD
+; RUN: llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-correct-everything.rc | FileCheck %s --check-prefix PGOOD
 
 ; PGOOD:  Icon (meh): "hello.bmp"
 ; PGOOD-NEXT:  Icon (Icon): "Icon"
@@ -100,156 +100,156 @@
 
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-stringtable-no-string.rc 2>&1 | FileCheck %s --check-prefix PSTRINGTABLE1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-stringtable-no-string.rc 2>&1 | FileCheck %s --check-prefix PSTRINGTABLE1
 
 ; PSTRINGTABLE1:  llvm-rc: Error parsing file: expected string, got }
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-stringtable-weird-option.rc 2>&1 | FileCheck %s --check-prefix PSTRINGTABLE2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-stringtable-weird-option.rc 2>&1 | FileCheck %s --check-prefix PSTRINGTABLE2
 
 ; PSTRINGTABLE2:  llvm-rc: Error parsing file: expected optional statement type, BEGIN or '{', got NONSENSETYPE
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-eof.rc 2>&1 | FileCheck %s --check-prefix PEOF
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-eof.rc 2>&1 | FileCheck %s --check-prefix PEOF
 
 ; PEOF:  llvm-rc: Error parsing file: expected '-', '~', integer or '(', got <EOF>
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-no-characteristics-arg.rc 2>&1 | FileCheck %s --check-prefix PCHARACTERISTICS1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-no-characteristics-arg.rc 2>&1 | FileCheck %s --check-prefix PCHARACTERISTICS1
 
 ; PCHARACTERISTICS1:  llvm-rc: Error parsing file: expected '-', '~', integer or '(', got BEGIN
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-nonsense-token.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-nonsense-token.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE1
 
 ; PNONSENSE1:  llvm-rc: Error parsing file: expected int or identifier, got &
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-nonsense-type.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-nonsense-type.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE2
 
 ; PNONSENSE2:  llvm-rc: Error parsing file: expected filename, '{' or BEGIN, got <EOF>
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-nonsense-type-eof.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-nonsense-type-eof.rc 2>&1 | FileCheck %s --check-prefix PNONSENSE3
 
 ; PNONSENSE3:  llvm-rc: Error parsing file: expected int or identifier, got <EOF>
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-language-no-comma.rc 2>&1 | FileCheck %s --check-prefix PLANGUAGE1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-language-no-comma.rc 2>&1 | FileCheck %s --check-prefix PLANGUAGE1
 
 ; PLANGUAGE1:  llvm-rc: Error parsing file: expected ',', got 7
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-language-too-many-commas.rc 2>&1 | FileCheck %s --check-prefix PLANGUAGE2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-language-too-many-commas.rc 2>&1 | FileCheck %s --check-prefix PLANGUAGE2
 
 ; PLANGUAGE2:  llvm-rc: Error parsing file: expected '-', '~', integer or '(', got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-html-extra-comma.rc 2>&1 | FileCheck %s --check-prefix PHTML2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-html-extra-comma.rc 2>&1 | FileCheck %s --check-prefix PHTML2
 
 ; PHTML2:  llvm-rc: Error parsing file: expected string, got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-accelerators-bad-flag.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-accelerators-bad-flag.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS1
 
 ; PACCELERATORS1:  llvm-rc: Error parsing file: expected ASCII/VIRTKEY/NOINVERT/ALT/SHIFT/CONTROL, got HELLO
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-accelerators-bad-int-or-string.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-accelerators-bad-int-or-string.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS2
 
 ; PACCELERATORS2:  llvm-rc: Error parsing file: expected int or string, got NotIntOrString
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-accelerators-no-comma.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-accelerators-no-comma.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS3
 
 ; PACCELERATORS3:  llvm-rc: Error parsing file: expected int or string, got CONTROL
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-accelerators-no-comma-2.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS4
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-accelerators-no-comma-2.rc 2>&1 | FileCheck %s --check-prefix PACCELERATORS4
 
 ; PACCELERATORS4:  llvm-rc: Error parsing file: expected ',', got 10
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-menu-bad-id.rc 2>&1 | FileCheck %s --check-prefix PMENU1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-menu-bad-id.rc 2>&1 | FileCheck %s --check-prefix PMENU1
 
 ; PMENU1:  llvm-rc: Error parsing file: expected '-', '~', integer or '(', got A
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-menu-bad-flag.rc 2>&1 | FileCheck %s --check-prefix PMENU2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-menu-bad-flag.rc 2>&1 | FileCheck %s --check-prefix PMENU2
 
 ; PMENU2:  llvm-rc: Error parsing file: expected CHECKED/GRAYED/HELP/INACTIVE/MENUBARBREAK/MENUBREAK, got ERRONEOUS
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-menu-missing-block.rc 2>&1 | FileCheck %s --check-prefix PMENU3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-menu-missing-block.rc 2>&1 | FileCheck %s --check-prefix PMENU3
 
 ; PMENU3:  llvm-rc: Error parsing file: expected '{', got POPUP
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-menu-misspelled-separator.rc 2>&1 | FileCheck %s --check-prefix PMENU4
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-menu-misspelled-separator.rc 2>&1 | FileCheck %s --check-prefix PMENU4
 
 ; PMENU4:  llvm-rc: Error parsing file: expected SEPARATOR or string, got NOTSEPARATOR
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-cant-give-helpid.rc 2>&1 | FileCheck %s --check-prefix PDIALOG1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-cant-give-helpid.rc 2>&1 | FileCheck %s --check-prefix PDIALOG1
 
 ; PDIALOG1:  llvm-rc: Error parsing file: expected identifier, got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-too-few-args.rc 2>&1 | FileCheck %s --check-prefix PDIALOG2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-too-few-args.rc 2>&1 | FileCheck %s --check-prefix PDIALOG2
 
 ; PDIALOG2:  llvm-rc: Error parsing file: expected ',', got }
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-too-many-args.rc 2>&1 | FileCheck %s --check-prefix PDIALOG3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-too-many-args.rc 2>&1 | FileCheck %s --check-prefix PDIALOG3
 
 ; PDIALOG3:  llvm-rc: Error parsing file: expected identifier, got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-unknown-type.rc 2>&1 | FileCheck %s --check-prefix PDIALOG4
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-unknown-type.rc 2>&1 | FileCheck %s --check-prefix PDIALOG4
 
 ; PDIALOG4:  llvm-rc: Error parsing file: expected control type, END or '}', got UNKNOWN
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-unnecessary-string.rc 2>&1 | FileCheck %s --check-prefix PDIALOG5
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-unnecessary-string.rc 2>&1 | FileCheck %s --check-prefix PDIALOG5
 
 ; PDIALOG5:  llvm-rc: Error parsing file: expected '-', '~', integer or '(', got "This shouldn't be here"
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-dialog-simple-font.rc 2>&1 | FileCheck %s --check-prefix PDIALOG6
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-dialog-simple-font.rc 2>&1 | FileCheck %s --check-prefix PDIALOG6
 
 ; PDIALOG6:  llvm-rc: Error parsing file: expected identifier, got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-wrong-fixed.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-wrong-fixed.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO1
 
 ; PVERSIONINFO1:  llvm-rc: Error parsing file: expected fixed VERSIONINFO statement type, got WEIRDFIXED
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-named-main-block.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-named-main-block.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO2
 
 ; PVERSIONINFO2:  llvm-rc: Error parsing file: expected fixed VERSIONINFO statement type, got BLOCK
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-unnamed-inner-block.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-unnamed-inner-block.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO3
 
 ; PVERSIONINFO3:  llvm-rc: Error parsing file: expected string, got {
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-unnamed-value.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO4
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-unnamed-value.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO4
 
 ; PVERSIONINFO4:  llvm-rc: Error parsing file: expected string, got END
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-bad-type.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO5
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-bad-type.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO5
 
 ; PVERSIONINFO5:  llvm-rc: Error parsing file: expected BLOCK or VALUE, got INCORRECT
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-versioninfo-repeated-fixed.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO6
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-versioninfo-repeated-fixed.rc 2>&1 | FileCheck %s --check-prefix PVERSIONINFO6
 
 ; PVERSIONINFO6:  llvm-rc: Error parsing file: expected yet unread fixed VERSIONINFO statement type, got FILEVERSION
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-user-invalid-contents.rc 2>&1 | FileCheck %s --check-prefix PUSER1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-user-invalid-contents.rc 2>&1 | FileCheck %s --check-prefix PUSER1
 
 ; PUSER1:  llvm-rc: Error parsing file: expected int or string, got InvalidToken
Index: llvm/test/tools/llvm-rc/parser-expr.test
===================================================================
--- llvm/test/tools/llvm-rc/parser-expr.test
+++ llvm/test/tools/llvm-rc/parser-expr.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /dry-run /V -- %p/Inputs/parser-expr.rc | FileCheck %s
+; RUN: llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr.rc | FileCheck %s
 
 ; CHECK:  Language: 5, Sublanguage: 1
 ; CHECK-NEXT:  Language: 3, Sublanguage: 2
@@ -17,36 +17,36 @@
 ; CHECK-NEXT:  Language: 5, Sublanguage: 7
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-bad-binary-1.rc 2>&1 | FileCheck %s --check-prefix BINARY1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-bad-binary-1.rc 2>&1 | FileCheck %s --check-prefix BINARY1
 
 ; BINARY1: llvm-rc: Error parsing file: expected '-', '~', integer or '(', got &
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-bad-binary-2.rc 2>&1 | FileCheck %s --check-prefix BINARY2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-bad-binary-2.rc 2>&1 | FileCheck %s --check-prefix BINARY2
 
 ; BINARY2: llvm-rc: Error parsing file: expected '-', '~', integer or '(', got |
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-bad-binary-3.rc 2>&1 | FileCheck %s --check-prefix BINARY3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-bad-binary-3.rc 2>&1 | FileCheck %s --check-prefix BINARY3
 
 ; BINARY3: llvm-rc: Error parsing file: expected '-', '~', integer or '(', got +
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-bad-unary.rc 2>&1 | FileCheck %s --check-prefix UNARY
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-bad-unary.rc 2>&1 | FileCheck %s --check-prefix UNARY
 
 ; UNARY: llvm-rc: Error parsing file: expected ',', got ~
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-unbalanced-1.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED1
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-unbalanced-1.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED1
 
 ; UNBALANCED1: llvm-rc: Error parsing file: expected ')', got ,
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-unbalanced-2.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED2
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-unbalanced-2.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED2
 
 ; UNBALANCED2: llvm-rc: Error parsing file: expected ',', got )
 
 
-; RUN: not llvm-rc /dry-run /V -- %p/Inputs/parser-expr-unbalanced-3.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED3
+; RUN: not llvm-rc -no-preprocess /dry-run /V -- %p/Inputs/parser-expr-unbalanced-3.rc 2>&1 | FileCheck %s --check-prefix UNBALANCED3
 
 ; UNBALANCED3: llvm-rc: Error parsing file: expected ',', got )
Index: llvm/test/tools/llvm-rc/not-expr.test
===================================================================
--- llvm/test/tools/llvm-rc/not-expr.test
+++ llvm/test/tools/llvm-rc/not-expr.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/not-expr.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/not-expr.rc
 ; RUN: llvm-readobj %t | FileCheck %s --check-prefix=NOTEXPR
 
 ; NOTEXPR: Resource type (int): DIALOG (ID 5)
Index: llvm/test/tools/llvm-rc/memoryflags.test
===================================================================
--- llvm/test/tools/llvm-rc/memoryflags.test
+++ llvm/test/tools/llvm-rc/memoryflags.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/memoryflags.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/memoryflags.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): CURSOR (ID 1)
Index: llvm/test/tools/llvm-rc/memoryflags-stringtable.test
===================================================================
--- llvm/test/tools/llvm-rc/memoryflags-stringtable.test
+++ llvm/test/tools/llvm-rc/memoryflags-stringtable.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/memoryflags-stringtable.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/memoryflags-stringtable.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): STRINGTABLE (ID 6)
Index: llvm/test/tools/llvm-rc/language.test
===================================================================
--- llvm/test/tools/llvm-rc/language.test
+++ llvm/test/tools/llvm-rc/language.test
@@ -1,6 +1,6 @@
-; RUN: llvm-rc /l 40A /FO %t.res -- %p/Inputs/language.rc
+; RUN: llvm-rc -no-preprocess /l 40A /FO %t.res -- %p/Inputs/language.rc
 ; RUN: llvm-readobj %t.res | FileCheck %s
-; RUN: llvm-rc /l40A /FO %t.res -- %p/Inputs/language.rc
+; RUN: llvm-rc -no-preprocess /l40A /FO %t.res -- %p/Inputs/language.rc
 ; RUN: llvm-readobj %t.res | FileCheck %s
 
 ; CHECK:      Resource name (int): 1
Index: llvm/test/tools/llvm-rc/include-paths.test
===================================================================
--- llvm/test/tools/llvm-rc/include-paths.test
+++ llvm/test/tools/llvm-rc/include-paths.test
@@ -1,31 +1,31 @@
 ; Should find the bitmap if it is in the same folder as the rc file.
 ; RUN: rm -f %t.include.res
-; RUN: llvm-rc /FO %t.include.res -- %p/Inputs/include.rc
+; RUN: llvm-rc -no-preprocess /FO %t.include.res -- %p/Inputs/include.rc
 ; RUN: llvm-readobj %t.include.res | FileCheck --check-prefix=FOUND %s
 
 ; Try including files without quotes.
 ; RUN: rm -f %t.noquotes.res
-; RUN: llvm-rc /FO %t.noquotes.res -- %p/Inputs/include-noquotes.rc
+; RUN: llvm-rc -no-preprocess /FO %t.noquotes.res -- %p/Inputs/include-noquotes.rc
 ; RUN: llvm-readobj %t.noquotes.res | FileCheck --check-prefix=FOUND %s
 
 ; Should find the bitmap if the folder is explicitly specified.
 ; RUN: rm -f %t.nested-include.res
-; RUN: llvm-rc /FO %t.nested-include.res /I %p/Inputs/nested -- %p/Inputs/deep-include.rc
+; RUN: llvm-rc -no-preprocess /FO %t.nested-include.res /I %p/Inputs/nested -- %p/Inputs/deep-include.rc
 ; RUN: llvm-readobj %t.nested-include.res | FileCheck --check-prefix=FOUND %s
 
 ; The include dir can be specified via the INCLUDE env var too.
 ; RUN: rm -f %t.nested-include.res
-; RUN: env INCLUDE=%p/Inputs/nested llvm-rc /FO %t.nested-include.res -- %p/Inputs/deep-include.rc
+; RUN: env INCLUDE=%p/Inputs/nested llvm-rc -no-preprocess /FO %t.nested-include.res -- %p/Inputs/deep-include.rc
 ; RUN: llvm-readobj %t.nested-include.res | FileCheck --check-prefix=FOUND %s
 
 ; Specifying the /X option should make it ignore the INCLUDE variable.
 ; RUN: rm -f %t.nested-include.res
-; RUN: not env INCLUDE=%p/Inputs/nested llvm-rc /X /FO %t.nested-include.res -- %p/Inputs/deep-include.rc 2>&1 \
+; RUN: not env INCLUDE=%p/Inputs/nested llvm-rc -no-preprocess /X /FO %t.nested-include.res -- %p/Inputs/deep-include.rc 2>&1 \
 ; RUN:   | FileCheck --check-prefix=MISSING %s
 
 ; Otherwise, it should not find the bitmap.
 ; RUN: rm -f %t.nested-include.res
-; RUN: not llvm-rc /FO %t.nested-include.res -- %p/Inputs/deep-include.rc 2>&1 \
+; RUN: not llvm-rc -no-preprocess /FO %t.nested-include.res -- %p/Inputs/deep-include.rc 2>&1 \
 ; RUN:   | FileCheck --check-prefix=MISSING %s
 
 ; Should find the bitmap if the process's current working directory
@@ -34,7 +34,7 @@
 ; failure of other tests if run first.
 ; RUN: rm -f %t.nested-include.res
 ; RUN: cd %p/Inputs/nested
-; RUN: llvm-rc /FO %t.nested-include.res -- %p/Inputs/include.rc
+; RUN: llvm-rc -no-preprocess /FO %t.nested-include.res -- %p/Inputs/include.rc
 ; RUN: llvm-readobj %t.nested-include.res | FileCheck --check-prefix=FOUND %s
 
 FOUND:      Resource type (int): BITMAP (ID 2)
Index: llvm/test/tools/llvm-rc/helpmsg.test
===================================================================
--- llvm/test/tools/llvm-rc/helpmsg.test
+++ llvm/test/tools/llvm-rc/helpmsg.test
@@ -15,6 +15,7 @@
 ; CHECK-NEXT:    /I <value>  Add an include path.
 ; CHECK-NEXT:    /LN <value> Set the default language name.
 ; CHECK-NEXT:    /L <value>  Set the default language identifier.
+; CHECK-NEXT:    /no-preprocess Don't try to preprocess the input file.
 ; CHECK-NEXT:    /N          Null-terminate all strings in the string table.
 ; CHECK-NEXT:    /U <value>  Undefine a symbol for the C preprocessor.
 ; CHECK-NEXT:    /V          Be verbose.
Index: llvm/test/tools/llvm-rc/flags.test
===================================================================
--- llvm/test/tools/llvm-rc/flags.test
+++ llvm/test/tools/llvm-rc/flags.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /dry-run /FO %t -- %p/Inputs/empty.rc 2>&1 | FileCheck %s --allow-empty --check-prefix=FO
-; RUN: llvm-rc /dry-run /FO%t -- %p/Inputs/empty.rc 2>&1 | FileCheck %s --allow-empty --check-prefix=FO
+; RUN: llvm-rc -no-preprocess /dry-run /FO %t -- %p/Inputs/empty.rc 2>&1 | FileCheck %s --allow-empty --check-prefix=FO
+; RUN: llvm-rc -no-preprocess /dry-run /FO%t -- %p/Inputs/empty.rc 2>&1 | FileCheck %s --allow-empty --check-prefix=FO
 
 ; FO-NOT: Exactly one input file should be provided.
Index: llvm/test/tools/llvm-rc/cpp-output.test
===================================================================
--- llvm/test/tools/llvm-rc/cpp-output.test
+++ llvm/test/tools/llvm-rc/cpp-output.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /FO %t -- %p/Inputs/cpp-output.rc
+; RUN: llvm-rc -no-preprocess /FO %t -- %p/Inputs/cpp-output.rc
 ; RUN: llvm-readobj %t | FileCheck %s
 
 ; CHECK:      Resource type (int): STRINGTABLE (ID 6)
Index: llvm/test/tools/llvm-rc/codepage.test
===================================================================
--- llvm/test/tools/llvm-rc/codepage.test
+++ llvm/test/tools/llvm-rc/codepage.test
@@ -1,4 +1,4 @@
-; RUN: llvm-rc /C 65001 /FO %t.utf8.res -- %p/Inputs/utf8.rc
+; RUN: llvm-rc -no-preprocess /C 65001 /FO %t.utf8.res -- %p/Inputs/utf8.rc
 ; RUN: llvm-readobj %t.utf8.res | FileCheck %s --check-prefix=UTF8
 
 ; UTF8:      Resource type (int): STRINGTABLE (ID 6)
@@ -18,11 +18,11 @@
 ; UTF8-NEXT:   0040: 00000000                             |....|
 ; UTF8-NEXT: )
 
-; RUN: not llvm-rc /C 65001 /FO %t.utf8-escape-narrow.res -- %p/Inputs/utf8-escape-narrow.rc 2>&1 | FileCheck %s --check-prefix UTF8_ESCAPE
+; RUN: not llvm-rc -no-preprocess /C 65001 /FO %t.utf8-escape-narrow.res -- %p/Inputs/utf8-escape-narrow.rc 2>&1 | FileCheck %s --check-prefix UTF8_ESCAPE
 ; UTF8_ESCAPE: llvm-rc: Error in STRINGTABLE statement (ID 1):
 ; UTF8_ESCAPE-NEXT: Unable to interpret single byte (195) as UTF-8
 
-; RUN: llvm-rc /C 1252 /FO %t.cp1252.res -- %p/Inputs/cp1252.rc
+; RUN: llvm-rc -no-preprocess /C 1252 /FO %t.cp1252.res -- %p/Inputs/cp1252.rc
 ; RUN: llvm-readobj %t.cp1252.res | FileCheck %s --check-prefix=CP1252
 
 ; CP1252:      Resource type (int): STRINGTABLE (ID 6)
Index: llvm/test/tools/llvm-rc/absolute.test
===================================================================
--- llvm/test/tools/llvm-rc/absolute.test
+++ llvm/test/tools/llvm-rc/absolute.test
@@ -1,7 +1,7 @@
 ; RUN: touch %t.manifest
 ; RUN: echo "1 24 \"%t.manifest\"" > %t.rc
-; RUN: llvm-rc -- %t.rc
+; RUN: llvm-rc -no-preprocess -- %t.rc
 ;; On Windows, try stripping out the drive name from the absolute path,
 ;; and make sure the path still is found.
 ; RUN: cat %t.rc | sed 's/"[a-zA-Z]:/"/' > %t2.rc
-; RUN: llvm-rc -- %t2.rc
+; RUN: llvm-rc -no-preprocess -- %t2.rc
Index: clang/test/lit.cfg.py
===================================================================
--- clang/test/lit.cfg.py
+++ clang/test/lit.cfg.py
@@ -26,7 +26,7 @@
 
 # suffixes: A list of file extensions to treat as test files.
 config.suffixes = ['.c', '.cpp', '.i', '.cppm', '.m', '.mm', '.cu', '.hip',
-                   '.ll', '.cl', '.clcpp', '.s', '.S', '.modulemap', '.test', '.rs', '.ifs']
+                   '.ll', '.cl', '.clcpp', '.s', '.S', '.modulemap', '.test', '.rs', '.ifs', '.rc']
 
 # excludes: A list of directories to exclude from the testsuite. The 'Inputs'
 # subdirectories contain auxiliary inputs for various tests in their parent
Index: clang/test/Preprocessor/llvm-rc.rc
===================================================================
--- /dev/null
+++ clang/test/Preprocessor/llvm-rc.rc
@@ -0,0 +1,8 @@
+// RUN: llvm-rc -i%p/Inputs -Fo%t.res %s
+// RUN: llvm-readobj %t.res | FileCheck %s
+// CHECK: Resource type (int): RCDATA (ID 10)
+// CHECK: Resource name (int): 42
+#include "llvm-rc.h"
+MY_ID RCDATA {
+  "a long string of data"
+}
Index: clang/test/Preprocessor/Inputs/llvm-rc.h
===================================================================
--- /dev/null
+++ clang/test/Preprocessor/Inputs/llvm-rc.h
@@ -0,0 +1,7 @@
+#ifndef RC_INVOKED
+#error RC_INVOKED not defined
+#endif
+#ifndef _WIN32
+#error _WIN32 not defined
+#endif
+#define MY_ID 42
Index: clang/test/CMakeLists.txt
===================================================================
--- clang/test/CMakeLists.txt
+++ clang/test/CMakeLists.txt
@@ -120,6 +120,7 @@
     llvm-objcopy
     llvm-objdump
     llvm-profdata
+    llvm-rc
     llvm-readelf
     llvm-readobj
     llvm-strip
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