diff options
| author | Keith Randall <khr@golang.org> | 2016-02-23 10:54:36 -0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2016-02-24 00:16:23 +0000 |
| commit | e360f7c4dbb5695fc4cadb3d400e36ec09327732 (patch) | |
| tree | 18d6bd05ddd831a605be5cc3e171a0e1b389b697 /src/cmd/internal/obj/objfile.go | |
| parent | c4cb365ea23f4e3bd571f63a16d59ad6c01df145 (diff) | |
| download | go-e360f7c4dbb5695fc4cadb3d400e36ec09327732.tar.xz | |
cmd/compile: keep JMPs around with -N
When -N, make sure we don't drop every instruction from
a block, even ones which would otherwise be empty.
Helps keep line numbers around for debugging, particularly
for break and continue statements (which often compile
down to nothing).
Fixes #14379
Change-Id: I33722c4f0dcd502f146fa48af262ba3a477c959a
Reviewed-on: https://go-review.googlesource.com/19854
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
Diffstat (limited to 'src/cmd/internal/obj/objfile.go')
| -rw-r--r-- | src/cmd/internal/obj/objfile.go | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/objfile.go b/src/cmd/internal/obj/objfile.go index bae64f4a29..40c92dd152 100644 --- a/src/cmd/internal/obj/objfile.go +++ b/src/cmd/internal/obj/objfile.go @@ -295,7 +295,9 @@ func Flushplist(ctxt *Link) { for s := text; s != nil; s = s.Next { mkfwd(s) linkpatch(ctxt, s) - ctxt.Arch.Follow(ctxt, s) + if ctxt.Flag_optimize { + ctxt.Arch.Follow(ctxt, s) + } ctxt.Arch.Preprocess(ctxt, s) ctxt.Arch.Assemble(ctxt, s) fieldtrack(ctxt, s) |