PPC64 in Go defined many opcodes that are different from PPC64 opcodes, but
updates to the Go assembly language used mnemonics that are mostly similar if not
identical to the PPC64 mneumonics, such as VMX and VSX instructions. Not all detail
is included here; refer to the Power ISA document if interested in more detail.

Starting with Go 1.15 the Go objdump supports the -gnu option, which provides a

	{"GMT+", 3, true},
	{"GMT+3", 5, true},
	{"GMT+a", 3, true},
	{"GMT+3a", 5, true},
	{"GMT-5 hi there", 5, true},
	{"GMT-51 hi there", 3, true},
	{"ChST hi there", 4, true},
	{"MeST hi there", 4, true},
	{"MSDx", 3, true},
	{"MSDY", 0, false}, // four letters must end in T.
	{"ESAST hi", 5, true},
	{"ESASTT hi", 0, false}, // run of upper-case letters too long.
	{"ESATY hi", 0, false},  // five letters must end in T.