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cmd/compile: reduce rulelog noise

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When the SSA rules are re-generated to log rules,
they write output like:

rewrite AMD64.rules:527
rewrite AMD64.rules:427
rewrite AMD64.rules:494

This is silly; there are no non-rewrite lines in the file.
Furthermore, the rulelog file tends to be gigantic
for any non-trivial compilation (measured in gigabytes).

Remove the "rewrite " prefix.

No impact to normal builds.

Change-Id: I955995c1cc5f27a4a6a3849e19082ecb3e40bd4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/176677
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2019-05-10 16:31:56 -07:00
parent 309ab1ecc8
commit f61cf6f313
1 changed files with 1 additions and 1 deletions
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2
src/cmd/compile/internal/ssa/rewrite.go
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@ -868,7 +868,7 @@ func logRule(s string) {
} }
ruleFile = w ruleFile = w
} }
_, err := fmt.Fprintf(ruleFile, "rewrite %s\n", s) _, err := fmt.Fprintln(ruleFile, s)
if err != nil { if err != nil {
panic(err) panic(err)
} }