<p dir="ltr">Might be worth filing a bug on clang to consider adding a such a warning?</p>
<div class="gmail_quote">On Jan 25, 2013 7:38 AM, "Reid Kleckner" <<a href="mailto:reid@kleckner.net">reid@kleckner.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Author: rnk<br>
Date: Fri Jan 25 09:35:56 2013<br>
New Revision: 173454<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=173454&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=173454&view=rev</a><br>
Log:<br>
Fix MSVC 2012 warning about a 32-bit shift that should be 64-bit<br>
<br>
Modified:<br>
    llvm/trunk/lib/IR/Attributes.cpp<br>
<br>
Modified: llvm/trunk/lib/IR/Attributes.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Attributes.cpp?rev=173454&r1=173453&r2=173454&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Attributes.cpp?rev=173454&r1=173453&r2=173454&view=diff</a><br>

==============================================================================<br>
--- llvm/trunk/lib/IR/Attributes.cpp (original)<br>
+++ llvm/trunk/lib/IR/Attributes.cpp Fri Jan 25 09:35:56 2013<br>
@@ -524,12 +524,12 @@<br>
<br>
 uint64_t AttributeImpl::getAlignment() const {<br>
   uint64_t Mask = Raw() & getAttrMask(Attribute::Alignment);<br>
-  return 1U << ((Mask >> 16) - 1);<br>
+  return 1ULL << ((Mask >> 16) - 1);<br>
 }<br>
<br>
 uint64_t AttributeImpl::getStackAlignment() const {<br>
   uint64_t Mask = Raw() & getAttrMask(Attribute::StackAlignment);<br>
-  return 1U << ((Mask >> 26) - 1);<br>
+  return 1ULL << ((Mask >> 26) - 1);<br>
 }<br>
<br>
 void AttributeImpl::Profile(FoldingSetNodeID &ID, Constant *Data,<br>
<br>
<br>
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</blockquote></div>