[llvm] r267335 - Declare GlobalValue::LinkageTypes based on unsigned.

[Duncan P. N. Exon Smith via llvm-commits]

This broke the build.  Reverted in r267341.

> On 2016-Apr-24, at 03:11, NAKAMURA Takumi via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> Author: chapuni
> Date: Sun Apr 24 05:11:45 2016
> New Revision: 267335
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=267335&view=rev
> Log:
> Declare GlobalValue::LinkageTypes based on unsigned.
> 
> Or, "LinkageTypes Linkage : 4;" might be sign-extended on msc.
> 
> Modified:
>    llvm/trunk/include/llvm/IR/GlobalValue.h
> 
> Modified: llvm/trunk/include/llvm/IR/GlobalValue.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/GlobalValue.h?rev=267335&r1=267334&r2=267335&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/GlobalValue.h (original)
> +++ llvm/trunk/include/llvm/IR/GlobalValue.h Sun Apr 24 05:11:45 2016
> @@ -37,7 +37,7 @@ class GlobalValue : public Constant {
>   GlobalValue(const GlobalValue &) = delete;
> public:
>   /// @brief An enumeration for the kinds of linkage for global values.
> -  enum LinkageTypes {
> +  enum LinkageTypes : unsigned {
>     ExternalLinkage = 0,///< Externally visible function
>     AvailableExternallyLinkage, ///< Available for inspection, not emission.
>     LinkOnceAnyLinkage, ///< Keep one copy of function when linking (inline)
> 
> 
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