Reformat verbose and stack trace printouts for response-files.

Author: dabelknap

lib/Driver/Job.cpp

@@ -355,9 +355,10 @@ void Job::printCommandLine(raw_ostream &os, StringRef Terminator) const {
   os << ' ';
   if (hasResponseFile()) {
     printArguments(os, {ResponseFileArg});
-  } else {
-    printArguments(os, Arguments);
+    os << " # ";
   }
+  printArguments(os, Arguments);
+
   os << Terminator;
 }
 

test/Driver/response-file.swift

@@ -28,10 +28,12 @@
 // RUN: %target-build-swift -typecheck @%t.5.resp %s 2>&1 | %FileCheck %s -check-prefix=LONG
 // LONG: warning: result of call to 'abs' is unused
 // RUN: %empty-directory(%t/tmp)
-// RUN: env TMPDIR=%t/tmp/ %target-swiftc_driver %s @%t.5.resp -save-temps
+// RUN: env TMPDIR=%t/tmp/ %target-swiftc_driver %s @%t.5.resp -save-temps 2>&1
 // RUN: ls %t/tmp/arguments-*.resp
+// RUN: %target-build-swift -v @%t.5.resp %s 2>&1 | %FileCheck %s -check-prefix=VERBOSE
+// VERBOSE: @{{[^ ]*}}arguments-{{[0-9a-zA-Z]+}}.resp # -frontend -c -primary-file
 // RUN: not %target-swiftc_driver %s @%t.5.resp -Xfrontend -debug-crash-immediately 2>&1 | %FileCheck %s -check-prefix=CRASH
-// CRASH: @{{[^ ]*}}arguments-{{[0-9a-zA-Z]+}}.resp
+// CRASH: Program arguments: {{[^ ]*}}swift -frontend -c -primary-file
 
 #if TEST0
 abs(-5)

tools/driver/driver.cpp

@@ -111,8 +111,6 @@ static bool shouldRunAsSubcommand(StringRef ExecName,
 extern int apinotes_main(ArrayRef<const char *> Args);
 
 int main(int argc_, const char **argv_) {
-  PROGRAM_START(argc_, argv_);
-
   SmallVector<const char *, 256> argv;
   llvm::SpecificBumpPtrAllocator<char> ArgAllocator;
   std::error_code EC = llvm::sys::Process::GetArgumentVector(
@@ -134,6 +132,10 @@ int main(int argc_, const char **argv_) {
       llvm::cl::TokenizeGNUCommandLine,
       argv);
 
+  // Initialize the stack trace using the parsed argument vector with expanded
+  // response files.
+  PROGRAM_START(argv.size(), argv.data());
+
   // Check if this invocation should execute a subcommand.
   StringRef ExecName = llvm::sys::path::stem(argv[0]);
   SmallString<256> SubcommandName;