go - The Go programming language

Age	Commit message (Collapse)	Author
2018-05-06	cmd/compile: optimize append(x, make([]T, y)...) slice extension	Martin Möhrmann
	Changes the compiler to recognize the slice extension pattern append(x, make([]T, y)...) and replace it with growslice and an optional memclr to avoid an allocation for make([]T, y). Memclr is not called in case growslice already allocated a new cleared backing array when T contains pointers. amd64: name old time/op new time/op delta ExtendSlice/IntSlice 103ns ± 4% 57ns ± 4% -44.55% (p=0.000 n=18+18) ExtendSlice/PointerSlice 155ns ± 3% 77ns ± 3% -49.93% (p=0.000 n=20+20) ExtendSlice/NoGrow 50.2ns ± 3% 5.2ns ± 2% -89.67% (p=0.000 n=18+18) name old alloc/op new alloc/op delta ExtendSlice/IntSlice 64.0B ± 0% 32.0B ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/PointerSlice 64.0B ± 0% 32.0B ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/NoGrow 32.0B ± 0% 0.0B -100.00% (p=0.000 n=20+20) name old allocs/op new allocs/op delta ExtendSlice/IntSlice 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/PointerSlice 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/NoGrow 1.00 ± 0% 0.00 -100.00% (p=0.000 n=20+20) Fixes #21266 Change-Id: Idc3077665f63cbe89762b590c5967a864fd1c07f Reviewed-on: https://go-review.googlesource.com/109517 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2012-02-19	test: [a-c]: add introductory comments to tests	Rob Pike
	Very few of the compiler regression tests include a comment saying waht they do. Many are obvious, some are anything but. I've started with a-c in the top directory. More will follow once we agree on the approach, correctness, and thoroughness here. zerodivide.go sneaked in too. R=rsc, r CC=golang-dev https://golang.org/cl/5656100
2012-02-16	test: use testlib (first 100)	Russ Cox
	X ,s;^// \$G (\$D/)?\$F\.go $;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A $;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out $;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go $;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5656082
2012-02-01	test: test append with two different named types with same element type	Ian Lance Taylor
	R=golang-dev, gri CC=golang-dev https://golang.org/cl/5615045
2011-10-12	runtime: append([]byte, string...)	Luuk van Dijk
	Fixes #2274 R=rsc, gri, dsymonds, bradfitz, lvd CC=golang-dev https://golang.org/cl/5149045
2011-01-19	delete float, complex - code changes	Russ Cox
	also: cmplx -> complex float64(1.0) -> 1.0 float64(1) -> 1.0 R=gri, r, gri1, r2 CC=golang-dev https://golang.org/cl/3991043
2010-10-28	test for append() built-in	Robert Griesemer
	R=r, rsc CC=golang-dev https://golang.org/cl/2777041