From 3b93c91836a05c116e0a21f29cb02058b26f011d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 12 Nov 2003 07:13:37 +0000
Subject: [PATCH] Detect problems with PHI node operands!

llvm-svn: 9916
---
 llvm/lib/VMCore/Verifier.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/lib/VMCore/Verifier.cpp b/llvm/lib/VMCore/Verifier.cpp
index 1362eaab0f6b..d38ed1d5d2ad 100644
--- a/llvm/lib/VMCore/Verifier.cpp
+++ b/llvm/lib/VMCore/Verifier.cpp
@@ -340,6 +340,12 @@ void Verifier::visitPHINode(PHINode &PN) {
           "PHI nodes not grouped at top of basic block!",
           &PN, PN.getParent());
 
+  // Check that all of the operands of the PHI node have the same type as the
+  // result.
+  for (unsigned i = 0, e = PN.getNumIncomingValues(); i != e; ++i)
+    Assert1(PN.getType() == PN.getIncomingValue(i)->getType(),
+            "PHI node operands are not the same type as the result!", &PN);
+
   // All other PHI node constraints are checked in the visitBasicBlock method.
 
   visitInstruction(PN);