[analyzer] Show full analyzer invocation for reproducibility in HTML reports

Analyzing problems which appear in scan-build results can be very
difficult, as after the launch no exact invocation is stored, and it's
super-hard to launch the debugger.
With this patch, the exact analyzer invocation appears in the footer,
and can be copied to debug/check reproducibility/etc.

rdar://35980230

llvm-svn: 323245

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 74db7f89cf1..b107f65adf1 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -305,6 +305,14 @@ static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
     }
   }
 
+  llvm::raw_string_ostream os(Opts.FullCompilerInvocation);
+  for (unsigned i=0; i<Args.getNumInputArgStrings(); i++) {
+    if (i != 0)
+      os << " ";
+    os << Args.getArgString(i);
+  }
+  os.flush();
+
   return Success;
 }