From 04578fcfa5db449006766391f0f397069d14598b Mon Sep 17 00:00:00 2001
From: David Majnemer <david.majnemer@gmail.com>
Date: Wed, 11 Feb 2015 09:13:09 +0000
Subject: DataLayout: Report when the preferred alignment is less than the ABI

llvm-svn: 228819
---
 llvm/lib/IR/DataLayout.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/lib/IR/DataLayout.cpp')

diff --git a/llvm/lib/IR/DataLayout.cpp b/llvm/lib/IR/DataLayout.cpp
index cde393777a6..0dcc8427dcd 100644
--- a/llvm/lib/IR/DataLayout.cpp
+++ b/llvm/lib/IR/DataLayout.cpp
@@ -312,6 +312,9 @@ void DataLayout::parseSpecifier(StringRef Desc) {
         PrefAlign = inBytes(getInt(Tok));
       }
 
+      if (ABIAlign > PrefAlign)
+        report_fatal_error(
+            "Preferred alignment cannot be less than the ABI alignment");
       setAlignment(AlignType, ABIAlign, PrefAlign, Size);
 
       break;
-- 
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