diff --git a/chc/cmdline/ParseManager.py b/chc/cmdline/ParseManager.py
index 8472c50..913a93c 100644
--- a/chc/cmdline/ParseManager.py
+++ b/chc/cmdline/ParseManager.py
@@ -33,6 +33,8 @@
 import shlex
 import shutil
 
+from pathlib import Path
+
 import xml.etree.ElementTree as ET
 
 from typing import Any, Dict, List, Optional, Tuple
@@ -77,6 +79,7 @@ def __init__(
             verbose: bool = True,
             keepUnused: bool = False,
             tgtplatform: str = "-m64",
+            preprocessed_path: str = "",
     ) -> None:
         """Initialize paths to code, results, and parser executable.
 
@@ -109,6 +112,7 @@ def __init__(
                 + ". Target platform is set to -m64"
             )
             self._tgtplatform = "-m64"
+        self._preprocessed_path = preprocessed_path
         self.config = Config()
 
     @property
@@ -221,6 +225,35 @@ def save_semantics(self) -> None:
             )
         os.chdir(cwd)
 
+    def lookup_preprocess_file(
+            self,
+            cfilename: str,
+            copyfiles: bool = True
+    ) -> Optional[str]:
+        """Lookup the specified c file in the preprocessed_path directory."""
+        if not self._preprocessed_path:
+            return None
+        ifilename = cfilename[:-1] + "i"
+        path = Path(self._preprocessed_path) / ifilename
+        path = path.resolve()
+        if not path.is_file():
+            return None
+        if copyfiles:
+            tgtcfilename = os.path.join(
+                self.savedsourcepath, self.normalize_filename(cfilename)
+            )
+            tgtifilename = os.path.join(
+                self.savedsourcepath, self.normalize_filename(ifilename)
+            )
+            tgtcdir = os.path.dirname(tgtcfilename)
+            if not os.path.isdir(tgtcdir):
+                os.makedirs(tgtcdir)
+            os.chdir(self.projectpath)
+            if os.path.normpath(cfilename) != os.path.normpath(tgtcfilename):
+                shutil.copy(cfilename, tgtcfilename)
+                shutil.copy(ifilename, tgtifilename)
+        return str(path)
+
     def preprocess_file_with_cc(
             self,
             cfilename: str,
@@ -240,6 +273,9 @@ def preprocess_file_with_cc(
             copies the original source file and the generated .i file to the
             tgtpath/sourcefiles directory.
         """
+        saved_ifilename = self.lookup_preprocess_file(cfilename, copyfiles)
+        if saved_ifilename:
+            return saved_ifilename
 
         chklogger.logger.info("Preprocess file with cc: %s", cfilename)
         cwd = os.getcwd()
@@ -348,6 +384,10 @@ def preprocess(
         ecommand = command[:]
         cfilename: str = os.path.join(ccommand["directory"], ccommand["file"])
         if cfilename.endswith(".c"):
+            saved_ifilename = self.lookup_preprocess_file(cfilename, copyfiles)
+            if saved_ifilename:
+                return (cfilename, saved_ifilename)
+
             ifilename = cfilename[:-1] + "i"
             try:
                 outputflagindex = command.index("-o")
diff --git a/chc/cmdline/c_file/cfileutil.py b/chc/cmdline/c_file/cfileutil.py
index 0075824..52231ba 100644
--- a/chc/cmdline/c_file/cfileutil.py
+++ b/chc/cmdline/c_file/cfileutil.py
@@ -124,6 +124,7 @@ def cfile_parse_file(args: argparse.Namespace) -> NoReturn:
     loglevel: str = args.loglevel
     logfilename: Optional[str] = args.logfilename
     logfilemode: str = args.logfilemode
+    preprocessed_path: str = args.preprocessed_path
 
     try:
         UF.check_parser()
@@ -159,7 +160,8 @@ def cfile_parse_file(args: argparse.Namespace) -> NoReturn:
     chklogger.logger.info("Target path: %s", targetpath)
 
     parsemanager = ParseManager(
-        projectpath, projectname, targetpath, keep_system_includes=keep_system_includes)
+        projectpath, projectname, targetpath, keep_system_includes=keep_system_includes,
+        preprocessed_path=preprocessed_path)
     parsemanager.remove_semantics()
     parsemanager.initialize_paths()
 
diff --git a/chc/cmdline/c_project/cprojectutil.py b/chc/cmdline/c_project/cprojectutil.py
index b268c25..df08da2 100644
--- a/chc/cmdline/c_project/cprojectutil.py
+++ b/chc/cmdline/c_project/cprojectutil.py
@@ -121,6 +121,7 @@ def cproject_parse_project(args: argparse.Namespace) -> NoReturn:
     loglevel: str = args.loglevel
     logfilename: Optional[str] = args.logfilename
     logfilemode: str = args.logfilemode
+    preprocessed_path: str = args.preprocessed_path
 
     try:
         UF.check_parser()
@@ -168,7 +169,8 @@ def cproject_parse_project(args: argparse.Namespace) -> NoReturn:
         projectpath,
         projectname,
         targetpath,
-        keep_system_includes=keep_system_includes)
+        keep_system_includes=keep_system_includes,
+        preprocessed_path=preprocessed_path)
     parsemanager.remove_semantics()
     parsemanager.initialize_paths()
     exitcode = parsemanager.parse_with_ccommands(compilecommands, copyfiles=True)
diff --git a/chc/cmdline/chkc b/chc/cmdline/chkc
index 5848e0c..7024a5c 100755
--- a/chc/cmdline/chkc
+++ b/chc/cmdline/chkc
@@ -663,6 +663,9 @@ def parse() -> argparse.Namespace:
         "--keep-system-includes",
         action="store_true",
         help="do not filter out functions from files with absolute file names")
+    cfileparse.add_argument(
+        "--preprocessed-path",
+        help="directory that contains preprocessed source files")
     cfileparse.add_argument(
         "--loglevel", "-log",
         choices=UL.LogLevel.options(),
@@ -1491,6 +1494,9 @@ def parse() -> argparse.Namespace:
         "--keep-system-includes",
         action="store_true",
         help="don't filter out functions from files with absolute filenames")
+    cprojectparse.add_argument(
+        "--preprocessed-path",
+        help="directory that contains preprocessed source files")
     cprojectparse.add_argument(
         "--loglevel", "-log",
         choices=UL.LogLevel.options(),