Michael Munday a524616860 cmd/{asm,internal/obj/s390x}, math: remove emulated float instructions ... The s390x port was based on the ppc64 port and, because of the way the port was done, inherited some instructions from it. ppc64 supports 3-operand (4-operand for FMADD etc.) floating point instructions but s390x doesn't (the destination register is always an input) and so these were emulated. There is a bug in the emulation of FMADD whereby if the destination register is also a source for the multiplication it will be clobbered. This doesn't break any assembly code in the std lib but could affect future work. To fix this I have gone through the floating point instructions and removed all unnecessary 3-/4-operand emulation. The compiler doesn't need it and assembly writers don't need it, it's just a source of bugs. I've also deleted the FNMADD family of emulated instructions. They aren't used anywhere. Change-Id: Ic07cedcf141a6a3b43a0c84895460f6cfbf56c04 Reviewed-on: https://go-review.googlesource.com/33350 Run-TryBot: Michael Munday <munday@ca.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>		2017-02-10 16:11:25 +00:00
..
bio	cmd/internal/obj: remove use of package bio	2016-04-14 17:58:33 +00:00
browser	cmd/internal/browser: add chromium to the list of browsers	2016-11-12 00:29:12 +00:00
dwarf	cmd/internal/dwarf: use []*Var instead of linked lists	2017-02-07 20:17:24 +00:00
gcprog	cmd/{asm,compile/internal}: delete dead code	2016-08-25 12:20:29 +00:00
goobj	cmd/link, etc: introduce SymKind type	2016-09-09 16:56:03 +00:00
obj	cmd/{asm,internal/obj/s390x}, math: remove emulated float instructions	2017-02-10 16:11:25 +00:00
objfile	cmd/objdump: copy gosym.PCValue into internal package	2016-12-01 18:20:04 +00:00
src	[dev.inline] cmd/internal/src: introduce compact source position representation	2017-01-09 22:43:22 +00:00
sys	cmd/internal/sys, runtime/internal/sys: gofmt	2016-11-07 22:13:18 +00:00