From: Chris Lattner <sabre@nondot.org>
Date: Sat, 16 Oct 2004 18:09:25 +0000 (+0000)
Subject: Add note
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b2f59a2af7a94acf85c8b18af5c63f155df94f84;p=oota-llvm.git

Add note


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17043 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/ADCE.cpp b/lib/Transforms/Scalar/ADCE.cpp
index 7fafe26d4a9..e1f228d6fab 100644
--- a/lib/Transforms/Scalar/ADCE.cpp
+++ b/lib/Transforms/Scalar/ADCE.cpp
@@ -234,6 +234,7 @@ bool ADCE::doADCE() {
         }
       } else if (I->mayWriteToMemory() || isa<ReturnInst>(I) ||
                  isa<UnwindInst>(I)) {
+        // Unreachable instructions are not marked intrinsically live here.
 	markInstructionLive(I);
       } else if (isInstructionTriviallyDead(I)) {
         // Remove the instruction from it's basic block...