cmd/internal/obj: add prologue_end DWARF stmt for ppc64
This patch adds a prologue_end statement to the DWARF information for
the ppc64 arch.
Prologue end is used by the Delve debugger in order to determine where
to set a breakpoint to avoid the stacksplit prologue.
Updates #36612
Change-Id: Ifb16c1476fe716a0bf493c5486d1d88ebe8d0253
GitHub-Last-Rev:
77a217206d529df8bf8d4ef10a5347b6ae524612
GitHub-Pull-Request: golang/go#42261
Reviewed-on: https://go-review.googlesource.com/c/go/+/266019
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Alessandro Arzilli <alessandro.arzilli@gmail.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>