From 4418c2b3acfcb6cdb05f133aef8eef74ed0d0566 Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Thu, 28 Jul 2005 02:25:30 +0000
Subject: [PATCH] Make the verifier pass run (in debug mode) in llc. This adds
 a sanity check to llc when debugging. Also allow other passes to be run from
 llc. Patch contributed by Michael McCracken.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22532 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llc/llc.cpp | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 70d8c70fc31..9643f1e2e04 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -22,6 +22,8 @@
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/PluginLoader.h"
+#include "llvm/Support/PassNameParser.h"
+#include "llvm/Analysis/Verifier.h"
 #include "llvm/System/Signals.h"
 #include "llvm/Config/config.h"
 #include <fstream>
@@ -57,6 +59,14 @@ FileType("filetype", cl::init(TargetMachine::AssemblyFile),
                   "  Emit a native dynamic library ('.so') file"),
        clEnumValEnd));
 
+// The LLCPassList is populated with passes that were registered using
+//  PassInfo::LLC by the FilteredPassNameParser:
+cl::list<const PassInfo*, bool, FilteredPassNameParser<PassInfo::LLC> >
+LLCPassList(cl::desc("Passes Available"));
+
+cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
+		       cl::desc("Do not verify input module"));
+
 
 // GetFileNameRoot - Helper function to get the basename of a filename.
 static inline std::string
@@ -113,6 +123,25 @@ int main(int argc, char **argv) {
     PassManager Passes;
     Passes.add(new TargetData(TD));
 
+#ifndef NDEBUG
+    if(!NoVerify)
+      Passes.add(createVerifierPass());
+#endif
+
+    // Create a new pass for each one specified on the command line
+    for (unsigned i = 0; i < LLCPassList.size(); ++i) {
+      const PassInfo *aPass = LLCPassList[i];
+
+      if (aPass->getNormalCtor()) {
+        Pass *P = aPass->getNormalCtor()();
+        Passes.add(P);
+      } else {
+        std::cerr << argv[0] << ": cannot create pass: "
+                  << aPass->getPassName() << "\n";
+      }
+    }
+
+
     // Figure out where we are going to send the output...
     std::ostream *Out = 0;
     if (OutputFilename != "") {
-- 
2.34.1