runtime: leave gccheckmark testing off by default

It's not helping anymore, and it's fooling people who try to
understand performance (like me).

Change-Id: I133a644acae0ddf1bfa17c654cdc01e2089da963
Reviewed-on: https://go-review.googlesource.com/9018
Reviewed-by: Austin Clements <austin@google.com>

diff --git a/src/runtime/runtime1.go b/src/runtime/runtime1.go
index f8caa0db5d155c146b6a4f638c4e4befbd51eec6..404d8f0653aad938ddd9f5f0164eec279562a074 100644 (file)
--- a/src/runtime/runtime1.go
+++ b/src/runtime/runtime1.go
@@ -334,9 +334,6 @@ var dbgvars = []dbgVar{
 }
 
 func parsedebugvars() {
-       // gccheckmark is enabled by default for the 1.5 dev cycle
-       debug.gccheckmark = 1
-
        for p := gogetenv("GODEBUG"); p != ""; {
                field := ""
                i := index(p, ",")