llvm dev - Aug 2016 - Idiomatic way to replace all occurrences of a pattern in a string with Regex

Hi,

Lets say that I have a string like this: %78 = OpCompositeInsert %v4float
%77 %17 0
and I want to add to add w suffix to every name beginning with '%'.

What is the most idiomatic/elegant way to do it using llvm::Regex? Or is
there a better tool to do so?

Best,
Kuba
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