qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-10-05 16:41:21 -06:00
Code Releases Activity

[dev.ssa] cmd/compile/ssa: add timing to compiler passes

Browse Source 
Add timing/allocation information to each compiler pass for both the
console and html output.

Change-Id: I75833003b806a09b4fb1bbf63983258612cdb7b0
Reviewed-on: https://go-review.googlesource.com/14277
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Todd Neal 2015-08-10 19:00:34 -05:00
parent 19447a66d6
commit 24dcede1c0
1 changed files with 24 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/cmd/compile/internal/ssa/compile.go
View File

@ -5,8 +5,10 @@
package ssa
import (
"fmt"
"log"
"runtime"
"time"
)
// Compile is the main entry point for this package.
@ -36,14 +38,34 @@ func Compile(f *Func) {
printFunc(f)
f.Config.HTML.WriteFunc("start", f)
checkFunc(f)
const logMemStats = false
for _, p := range passes {
phaseName = p.name
f.Logf(" pass %s begin\n", p.name)
// TODO: capture logging during this pass, add it to the HTML
var mStart runtime.MemStats
if logMemStats {
runtime.ReadMemStats(&mStart)
}
tStart := time.Now()
p.fn(f)
f.Logf(" pass %s end\n", p.name)
tEnd := time.Now()
time := tEnd.Sub(tStart).Nanoseconds()
var stats string
if logMemStats {
var mEnd runtime.MemStats
runtime.ReadMemStats(&mEnd)
nAllocs := mEnd.TotalAlloc - mStart.TotalAlloc
stats = fmt.Sprintf("[%d ns %d bytes]", time, nAllocs)
} else {
stats = fmt.Sprintf("[%d ns]", time)
}
f.Logf(" pass %s end %s\n", p.name, stats)
printFunc(f)
f.Config.HTML.WriteFunc("after "+phaseName, f)
f.Config.HTML.WriteFunc(fmt.Sprintf("after %s %s", phaseName, stats), f)
checkFunc(f)
}