Commit graph

15 commits

Author SHA1 Message Date
David Chase
2270133981 cmd/gc: allocate backing storage for non-escaping interfaces on stack
Extend escape analysis to convT2E and conT2I. If the interface value
does not escape supply runtime with a stack buffer for the object copy.

This is a straight port from .c to .go of Dmitry's patch

Change-Id: Ic315dd50d144d94dd3324227099c116be5ca70b6
Reviewed-on: https://go-review.googlesource.com/8201
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-30 16:11:22 +00:00
Dmitry Vyukov
edcc062bdc test: add tests for escape analysis of interface conversions
The false positives (var incorrectly escapes) are marked with BAD.

Change-Id: If64fabb6ea96de44a1177d9ab12e2ccc579fe0c4
Reviewed-on: https://go-review.googlesource.com/5294
Reviewed-by: Keith Randall <khr@golang.org>
2015-03-28 16:15:27 +00:00
David Chase
bc14989713 cmd/internal/gc: add a comment to esc.go
Change-Id: I19e6542e7d79d60e39d62339da51a827c5aa6d3b
Reviewed-on: https://go-review.googlesource.com/7668
Reviewed-by: Russ Cox <rsc@golang.org>
2015-03-17 20:00:27 +00:00
Russ Cox
c8198344ef cmd/internal/gc: fmt.Sprintf elimination and minor cleanup
Change-Id: Iaf5a7d25e6308b32c17a38afbbd46befa17aa3a4
Reviewed-on: https://go-review.googlesource.com/7629
Reviewed-by: Rob Pike <r@golang.org>
2015-03-17 01:20:31 +00:00
Russ Cox
d7f6d46c5c cmd/...: remove use of func() { ... }() in loop increment
These were introduced during C -> Go translation when the loop increment
contained multiple statements.

Change-Id: Ic8abd8dcb3308851a1f7024de00711f0f984e684
Reviewed-on: https://go-review.googlesource.com/7627
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
2015-03-17 00:34:00 +00:00
Dave Cheney
d328756a69 cmd/internal/gc: make Node.Isddd boolean
Convert Node.Isddd to a boolean and simplify usage.

- Node.Isddd converted to bool
- Type.Isddd converted to bool
- mkinlcall converted to take isddd as a bool
- typecheckaste converted to take isddd as a bool
- ascompatte converted to take isddd as a bool

Change-Id: I52586145619c44182bb0c2c5d80a0a3fe3e50a07
Reviewed-on: https://go-review.googlesource.com/7172
Reviewed-by: Keith Randall <khr@golang.org>
2015-03-09 20:56:16 +00:00
Dave Cheney
44e903158f cmd/internal/gc: more Node cleanups
More Node cleanups, these ones touch go.y.

- convert Node.Implicit to bool
- convert Node.Used to bool

Change-Id: I85c7ff9e66cee7122b560adedc995166c874f2f2
Reviewed-on: https://go-review.googlesource.com/7124
Reviewed-by: Keith Randall <khr@golang.org>
2015-03-09 05:01:14 +00:00
Dave Cheney
b006d38acc cmd/internal/gc: more int to bool cleanups
- make paramoutheap return a bool
- convert Node.Assigned to a bool
- convert Node.Captured to a bool
- convert Node.Byval to a bool
- convert Node.Dupok to a bool
- convert Node.Wrapper to a bool
- convert Node.Reslice to a bool

Change-Id: I5b57c019f936c31d53db4db14459fb2b0aa72305
Reviewed-on: https://go-review.googlesource.com/7030
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Dave Cheney <dave@cheney.net>
2015-03-06 23:47:18 +00:00
Russ Cox
cdb7d7dcc2 cmd/5l etc: restore comments lost during C -> Go conversion
It appears that c2go dropped comments inside struct { ... } and enum { ... }.
Restore them.

Identified missing comments by checking for comments present
in the C code but not the Go code, made a list, and then reapplied
with some mechanical help.

Missing comment finder: http://play.golang.org/p/g6qNUAo1Y0

Change-Id: I323ab45c7ef9d51e28eab3b699eb14bee1eef66b
Reviewed-on: https://go-review.googlesource.com/6899
Reviewed-by: Rob Pike <r@golang.org>
2015-03-05 21:49:39 +00:00
Russ Cox
bed1f90d08 cmd/internal/gc: delete Strlit, Zconv
Strlit was just a poor excuse for a Go string.
Use a Go string.
In the one case where it was a string-or-nil (Type.Note), use a *string.

Zconv was a poor excuse for %q. Use %q.
The only important part about Zconv's implementation
was that the compiler and linker agreed on the quoting rules.
Now they both use %q instead of having two Zconvs.

This CL *does* change the generated object files, because the
quoted strings end up in symbol names.
For example the string "\r\n" used to be named go.string."\r\n"
and is now go.string."\x0d\n".

Change-Id: I5c0d38e1570ffc495f0db1a20273c9564104a7e8
Reviewed-on: https://go-review.googlesource.com/6519
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2015-03-03 20:33:00 +00:00
Russ Cox
175929b9fe cmd/5g etc: mechanical cleanup
Run rsc.io/grind rev 796d0f2 on C->Go conversions.

This replaces various awkward := initializations with plain var declarations.

Checked bit-for-bit compatibility with toolstash + buildall.

Change-Id: I601101d8177894adb9b0e3fb55dfe0ed4f544716
Reviewed-on: https://go-review.googlesource.com/6517
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-03-03 20:32:24 +00:00
Russ Cox
5d18282695 cmd/internal/gc: factor bottom-up visiting out of escape analysis
Change-Id: Id217fb6d8faf045a1a4fbda43b102ba989a02c17
Reviewed-on: https://go-review.googlesource.com/5951
Reviewed-by: Austin Clements <austin@google.com>
2015-02-26 17:35:42 +00:00
Russ Cox
382b44eb7c [dev.cc] cmd/5g etc: code cleanup: delay var decls and eliminate dead code
Ran rsc.io/grind rev 6f0e601 on the source files.

The cleanups move var declarations as close to the use
as possible, splitting disjoint uses of the var into separate
variables. They also remove dead code (especially in
func sudoaddable), which helps with the var moving.

There's more cleanup to come, but this alone cuts the
time spent compiling html/template on my 2013 MacBook Pro
from 3.1 seconds to 2.3 seconds.

Change-Id: I4de499f47b1dd47a560c310bbcde6b08d425cfd6
Reviewed-on: https://go-review.googlesource.com/5637
Reviewed-by: Rob Pike <r@golang.org>
2015-02-23 21:36:06 +00:00
Russ Cox
dc7b54bed2 [dev.cc] cmd/internal/obj, cmd/internal/gc, new6g: reconvert
Reconvert using rsc.io/c2go rev 27b3f59.

Changes to converter:
 - fatal does not return, so no fallthrough after fatal in switch
 - many more function results and variables identified as bool
 - simplification of negated boolean expressions

Change-Id: I3bc67da5e46cb7ee613e230cf7e9533036cc870b
Reviewed-on: https://go-review.googlesource.com/5171
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2015-02-20 00:17:03 +00:00
Russ Cox
8c195bdf12 [dev.cc] cmd/internal/gc, cmd/new6g etc: convert from cmd/gc, cmd/6g etc
First draft of converted Go compiler, using rsc.io/c2go rev 83d795a.

Change-Id: I29f4c7010de07d2ff1947bbca9865879d83c32c3
Reviewed-on: https://go-review.googlesource.com/4851
Reviewed-by: Rob Pike <r@golang.org>
2015-02-17 23:28:51 +00:00