From: Manman Ren <manman.ren@gmail.com>
Date: Mon, 18 Nov 2013 03:19:31 +0000 (+0000)
Subject: Debug Info Verifier: disable it by default.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=65c102e7fb68f78117be665dd9d4a73ef7e9f795;p=oota-llvm.git

Debug Info Verifier: disable it by default.

Debug info verifier is part of the verifier which is a Function Pass.
Tot currently tries to pull all reachable debug info MDNodes in each function,
which is too time-consuming. The correct fix seems to be separating debug info
verification to its own module pass.

I will disable the debug info verifier until a correct fix is found.

For Bill's testing case, enabling debug info verifier increase compile
time from 11s to 11m.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194986 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/IR/Verifier.cpp b/lib/IR/Verifier.cpp
index 3331a37defd..0bcb118ecad 100644
--- a/lib/IR/Verifier.cpp
+++ b/lib/IR/Verifier.cpp
@@ -78,7 +78,7 @@
 using namespace llvm;
 
 static cl::opt<bool> DisableDebugInfoVerifier("disable-debug-info-verifier",
-                                              cl::init(false));
+                                              cl::init(true));
 
 namespace {  // Anonymous namespace for class
   struct PreVerifier : public FunctionPass {