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Commit 956365ef authored by Saleem Abdulrasool's avatar Saleem Abdulrasool
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builtins: __builtin_clzll for x86 on MSVC 

Add an implementation for __builtin_clzll on MSVC even when _BitScanForward4 is
unavailable.

Patch by Tee Hao Wei!

llvm-svn: 250359
parent 55c3f89e
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