Alex Lorenz 11e1f2366f [llvm-cov] Avoid 0% when reporting something that's 0/0 ...

This commit makes llvm-cov avoid showing 0% (0/0) coverage for things
like file function coverage, etc. in reports and HTML output. This can happen
for files like headers that have macros but no functions. This commit makes
llvm-cov report - (0/0) instead.

rdar://29246480

Differential Revision: https://reviews.llvm.org/D26615

llvm-svn: 287539

2016-11-21 14:00:04 +00:00

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