Commit graph

3 commits

Author SHA1 Message Date
Alberto Donizetti
93f95a30a3 cmd/compile: move Issue 16214 test, delete asm_test file
Move the Issue16214 test in the fixedbugs_test.go file, and delete the
now empty asm_test.go file.

Change-Id: I2a0c72bd36f0359b7baf75b5d1ba647cc84feb46
Reviewed-on: https://go-review.googlesource.com/106836
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
2018-04-16 11:51:56 +00:00
Keith Randall
6129f37367 cmd/compile: inline convT2{I,E} when result doesn't escape
No point in calling a function when we can build the interface
using a known type (or itab) and the address of a local.

Get rid of third arg (preallocated stack space) to convT2{I,E}.

Makes go binary smaller by 0.2%

benchmark                   old ns/op     new ns/op     delta
BenchmarkEfaceInteger-8     16.7          10.1          -39.52%

Update #17118
Update #15375

Change-Id: I9724a1f802bfa1e3957bf1856b55558278e198a2
Reviewed-on: https://go-review.googlesource.com/29373
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2016-09-19 02:37:08 +00:00
Keith Randall
42da35c699 cmd/compile: SSA, don't let write barrier clobber return values
When we do *p = f(), we might need to copy the return value from
f to p with a write barrier.  The write barrier itself is a call,
so we need to copy the return value of f to a temporary location
before we call the write barrier function.  Otherwise, the call
itself (specifically, marshalling the args to typedmemmove) will
clobber the value we're trying to write.

Fixes #15854

Change-Id: I5703da87634d91a9884e3ec098d7b3af713462e7
Reviewed-on: https://go-review.googlesource.com/23522
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-27 22:11:45 +00:00