Before llvm-profdata participated in llvm-driver it directly called
InitLLVM, which takes care of wildcard argument expansion for tools on
Windows. When llvm-driver support was added to llvm-profdata this
InitLLVM call was effectively moved into the common llvm-driver wrapper
mechanism.
More recently, in #162191, llvm-driver support was temporarily backed
out of llvm-profdata due to an issue with `cl::opt` handling. This
change reintroduces the direct call to InitLLVM in order to restore
wildcard expansion and also adds a test for the wildcard expansion on
Windows.
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