Ben Gamari authored Jun 26, 2017 and Ben Gamari committed Jun 26, 2017

The binutils documentation states that .short is a synonym for .word,
which I assumed to mean "machine word", leading me to believe that we
needed to use .hword to render half-machine-words. However, Darwin's
toolchain doesn't understand .hword, so there we instead used .short.

However, as it turns out the binutils documentation confusingly uses
"word" to refer to a 16-bit word, so .short should work fine. Moreover,
LLVM's internal assembler also doesn't understand .hword, so using
.short consistently simplies things remarkably.

Test Plan: Validate using binutils and LLVM internal assembler,
validate on Darwin

Reviewers: niteria, austin

Reviewed By: niteria

Subscribers: rwbarton, thomie

GHC Trac Issues: #13866

Differential Revision: https://phabricator.haskell.org/D3667