Display relative hotness with two decimal digits after the decimal point
Display relative hotness with two decimal digits after the decimal point

I've seen cases where tiny inlined functions have such a high execution count
that most everything would show up with a relative of hotness of 0%.  Since
the inlined functions effectively disappear you need to tune in the lower
range, thus we need more precision.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@314537 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 94e8fbe9e8a69b48bec6435d2711f857ee31bd3d)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm