This prevents panics while attempting to generate code
for the runtime package. Now:
<unknown line number>: internal compiler error: localOffset of non-LocalSlot value: v10 = ADDQconst <*m> [256] v22
Change-Id: I20ed6ec6aae2c91183b8c826b8ebcc98e8ceebff
Reviewed-on: https://go-review.googlesource.com/12655
Reviewed-by: Keith Randall <khr@golang.org>
This generates more efficient code.
Before:
0x003a 00058 (rr.go:7) LEAQ go.string.hdr."="(SB), BX
0x0041 00065 (rr.go:7) LEAQ 16(BX), BP
0x0045 00069 (rr.go:7) MOVQ BP, 16(SP)
After:
0x003a 00058 (rr.go:7) LEAQ go.string."="(SB), BX
0x0041 00065 (rr.go:7) MOVQ BX, 16(SP)
It also matches the existing backend
and is more robust to other changes,
such as CL 11698, which I believe broke
the current code.
This CL fixes the encoding/base64 tests, as run with:
GOGC=off GOSSAPKG=base64 go test -a encoding/base64
Change-Id: I3c475bed1dd3335cc14e13309e11d23f0ed32c17
Reviewed-on: https://go-review.googlesource.com/12654
Reviewed-by: Keith Randall <khr@golang.org>
Issue 11214 reports problems with older versions of gdb. It does work
with gdb 7.9 on my Ubuntu Trusty system, so take that as the minimum
required version.
Fixes#11214.
Change-Id: I61b732895506575be7af595f81fc1bcf696f58c2
Reviewed-on: https://go-review.googlesource.com/12626
Reviewed-by: Austin Clements <austin@google.com>
This adds documentation for all the environment variables I could
locate in the go tool and the commands that it invokes.
Fixes#9672.
Change-Id: Id5f09160a3a8a938af4a3fcb8757eb3eced05416
Reviewed-on: https://go-review.googlesource.com/12620
Reviewed-by: Rob Pike <r@golang.org>
In https://go-review.googlesource.com/#/c/8611/ , these tests were
supposed to be skipped only for linux and darwin, as the comment says.
This patch fixes the logic in the if test.
Change-Id: Iff0a32186267457a414912c4c3ee4495650891a2
Reviewed-on: https://go-review.googlesource.com/12517
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Old code appended, did not play well with a closure
with a ... param.
Fixes#11075.
Change-Id: Ib7c8590c5c4e576e798837e7499e00f3494efb4a
Reviewed-on: https://go-review.googlesource.com/12580
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: David Chase <drchase@google.com>
This reduces the time to compile
test/slice3.go on my laptop from ~12s to ~3.8s.
It reduces the max memory use from ~4.8gb to
~450mb.
This is still considerably worse than tip,
at 1s and 300mb respectively, but it's
getting closer.
Hopefully this will fix the build at long last.
Change-Id: Iac26b52023f408438cba3ea1b81dcd82ca402b90
Reviewed-on: https://go-review.googlesource.com/12566
Reviewed-by: Keith Randall <khr@golang.org>
Experimentally, the Ops of v.Args do a good job
of differentiating values that will end up in
different partitions.
Most values have at most two args, so use them.
This reduces the wall time to run test/slice3.go
on my laptop from ~20s to ~12s.
Credit to Todd Neal for the idea.
Change-Id: I55d08f09eb678bbe8366924ca2fabcd32526bf41
Reviewed-on: https://go-review.googlesource.com/12565
Reviewed-by: Keith Randall <khr@golang.org>
These temporary environment variables make it
possible to enable using SSA-generated code
for a particular function or package without
having to rebuild the compiler.
This makes it possible to start bulk testing
SSA generated code.
First, bump up the default stack size
(_StackMin in runtime/stack2.go) to something
large like 32768, because without stackmaps
we can't grow stacks.
Then run something like:
for pkg in `go list std`
do
GOGC=off GOSSAPKG=`basename $pkg` go test -a $pkg
done
When a test fails, you can re-run those tests,
selectively enabling one function after another,
until you find the one that is causing trouble.
Doing this right now yields some interesting results:
* There are several packages for which we generate
some code and whose tests pass. Yay!
* We can generate code for encoding/base64, but
tests there fail, so there's a bug to fix.
* Attempting to build the runtime yields a panic during codegen:
panic: interface conversion: ssa.Location is nil, not *ssa.LocalSlot
* The top unimplemented codegen items are (simplified):
59 genValue not implemented: REPMOVSB
18 genValue not implemented: REPSTOSQ
14 genValue not implemented: SUBQ
9 branch not implemented: If v -> b b. Control: XORQconst <bool> [1]
8 genValue not implemented: MOVQstoreidx8
4 branch not implemented: If v -> b b. Control: SETG <bool>
3 branch not implemented: If v -> b b. Control: SETLE <bool>
2 load flags not implemented: LoadReg8 <flags>
2 genValue not implemented: InvertFlags <flags>
1 store flags not implemented: StoreReg8 <flags>
1 branch not implemented: If v -> b b. Control: SETGE <bool>
Change-Id: Ib64809ac0c917e25bcae27829ae634c70d290c7f
Reviewed-on: https://go-review.googlesource.com/12547
Reviewed-by: Keith Randall <khr@golang.org>
By walking only the current set of partitions
at any given point, the cse pass ended up doing
lots of extraneous, effectively O(n^2) work.
Using a regular for loop allows each cse pass to
make as much progress as possible by processing
each new class as it is introduced.
This can and should be optimized further,
but it already reduces by 75% cse time on test/slice3.go.
The overall time to compile test/slice3.go is still
dominated by the O(n^2) work in the liveness pass.
However, Keith is rewriting regalloc anyway.
Change-Id: I8be020b2f69352234587eeadeba923481bf43fcc
Reviewed-on: https://go-review.googlesource.com/12244
Reviewed-by: Keith Randall <khr@golang.org>
Use width-and-signed-specific multiply opcodes.
Implement OMUL.
A few other cleanups.
Fixes#11467
Change-Id: Ib0fe80a1a9b7208dbb8a2b6b652a478847f5d244
Reviewed-on: https://go-review.googlesource.com/12540
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
On Windows, gcc -o foo will generate foo.exe. Prevent that from
happening by adding a final '.' if necessary so that GCC thinks that
the file already has an extension.
Also remove the initial output file when doing an external link, and
use mayberemoveoutfile, not os.Remove, when building an archive
(otherwise we will do the wrong thing for -buildmode=c-archive -o
/dev/null).
I didn't add a test, as it requires using cgo and -o on Windows.
Fixes#11725.
Change-Id: I6ea12437bb6b4b9b8ee5c3b52d83509fa2437b2d
Reviewed-on: https://go-review.googlesource.com/12243
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Russ Cox <rsc@golang.org>
This reduces the wall time to run test/slice3.go
on my laptop from >10m to ~20s.
This could perhaps be further reduced by using
a worklist of blocks and/or implementing the
suggestion in the comment in this CL, but at this
point, it's fast enough that there is no need.
Change-Id: I741119e0c8310051d7185459f78be8b89237b85b
Reviewed-on: https://go-review.googlesource.com/12564
Reviewed-by: Keith Randall <khr@golang.org>
EncodeToken takes a Token (i.e. an interface{}) as a parameter,
and expects a value of type StartElement, EndElement, CharData,
Comment, ProcInst, or Directive.
If a pointer is passed instead, or any type which does not match
this list, the token is silently ignored.
Added a default case in the type switch to issue a proper error
when the type is invalid.
The behavior could be later improved by allowing pointers to
token to be accepted as well, but not for go1.5.
Fixes#11719
Change-Id: Ifd13c1563450b474acf66d57669fdccba76c1949
Reviewed-on: https://go-review.googlesource.com/12252
Reviewed-by: Andrew Gerrand <adg@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Foreign code can be arbitrarily aligned,
so the function before it can have
arbitrarily much padding.
We can't call pcvalue on values in the padding.
Fixes#11653.
Change-Id: I7d57f813ae5a2409d1520fcc909af3eeef2da131
Reviewed-on: https://go-review.googlesource.com/12550
Reviewed-by: Rob Pike <r@golang.org>
We use 127.0.0.1 instead of localhost in Go networking tests.
The reporter of #11774 has localhost defined to be 120.192.83.162,
for reasons unknown.
Also, if TestTraceSymbolize calls Fatalf (for example because Listen
fails) then we need to stop the trace for future tests to work.
See failure log in #11774.
Fixes#11774.
Change-Id: Iceddb03a72d31e967acd2d559ecb78051f9c14b7
Reviewed-on: https://go-review.googlesource.com/12521
Reviewed-by: Rob Pike <r@golang.org>
Also make the spelling consistent in asm.html
Change-Id: Ifa751eee288fe0634cd317eb827f3e408b199620
Reviewed-on: https://go-review.googlesource.com/12501
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
It wasn't working. The wrong variable was used.
This would ideally have tests. It's also DEBUG.
Fixes#11816
Change-Id: Iec42d229b81d78cece4ba5c73f3040e2356eb98f
Reviewed-on: https://go-review.googlesource.com/12544
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
When dialing with a relative Timeout instead of an absolute Deadline,
the deadline function only makes sense if called before doing any
time-consuming work.
This change calls deadline exactly once, storing the result until the
Dial operation completes. The partialDeadline implementation is
reverted to the following patch set 3:
https://go-review.googlesource.com/#/c/8768/3..4/src/net/dial.go
Otherwise, when dialing a name with multiple IP addresses, or when DNS
is slow, the recomputed deadline causes the total Timeout to exceed that
requested by the user.
Fixes#11796
Change-Id: I5e1f0d545f9e86a4e0e2ac31a9bd108849cf0fdf
Reviewed-on: https://go-review.googlesource.com/12442
Run-TryBot: Paul Marks <pmarks@google.com>
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Add label and goto checks and improve test coverage.
Implement OSWITCH and OSELECT.
Implement OBREAK and OCONTINUE.
Allow generation of code in dead blocks.
Change-Id: Ibebb7c98b4b2344f46d38db7c9dce058c56beaac
Reviewed-on: https://go-review.googlesource.com/12445
Reviewed-by: Keith Randall <khr@golang.org>
Handle multiplication with -1, 0, 3, 5, 9 and all powers of two.
Change-Id: I8e87e7670dae389aebf6f446d7a56950cacb59e0
Reviewed-on: https://go-review.googlesource.com/12350
Reviewed-by: Keith Randall <khr@golang.org>
This is needed to handle vendor directories correctly. It was already
done for the regular imports when the package was loaded, but not for
the test-only imports.
It would be nice to do this while loading the package, but that breaks
the code that checks for direct references to vendor packages when
running go test. This change is relatively contained.
While we're at it, skip "C" test imports in go get.
Fixes#11628.
Fixes#11717.
Change-Id: I9cc308cf45683e3ff905320c2b5cb45db7716846
Reviewed-on: https://go-review.googlesource.com/12488
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Updated Address.String so it restores quoted local parts, which wasn't
done before.
When parsing `<" "@example.com>`, the formatted string returned
`< @example>`, which doens't match RFC 5322, since a space is not atext.
Another example is `<"bob@valid"@example.com>` which returned
`<bob@valid@example.com>`, which is completely invalid.
I also added support for quotes and backslashes in a quoted local part.
Besides formatting a parsed Address, the ParseAddress function also
needed more testing and finetuning for special cases.
Things like `<.john.doe@example.com>` and `<john..doe@example.com>`
e.a. were accepted, but are invalid.
I fixed those details and add tests for some other special cases.
Fixes#10768
Change-Id: Ib0caf8ad603eb21e32fcb957a5f1a0fe5d1c6e6e
Reviewed-on: https://go-review.googlesource.com/8724
Reviewed-by: Russ Cox <rsc@golang.org>
Some routines run without and m or g and cannot invoke the
race detector runtime. They must be opaque to the runtime.
That used to be true because they were written in C.
Now that they are written in Go, disable the race detector
annotations for those functions explicitly.
Add test.
Fixes#10874.
Change-Id: Ia8cc28d51e7051528f9f9594b75634e6bb66a785
Reviewed-on: https://go-review.googlesource.com/12534
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Same as we do for string symbols.
Fixes#11583.
Change-Id: Ia9264f6faf486697d987051b7f9851d37d8ad381
Reviewed-on: https://go-review.googlesource.com/12531
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
In the past badsignal would crash the program. In
https://golang.org/cl/10757044 badsignal was changed to call sigsend,
to fix issue #3250. The effect of this was that when a non-Go thread
received a signal, and os/signal.Notify was not being used to check
for occurrences of the signal, the signal was ignored.
This changes the code so that if os/signal.Notify is not being used,
then the signal handler is reset to what it was, and the signal is
raised again. This lets non-Go threads handle the signal as they
wish. In particular, it means that a segmentation violation in a
non-Go thread will ordinarily crash the process, as it should.
Fixes#10139.
Update #11794.
Change-Id: I2109444aaada9d963ad03b1d071ec667760515e5
Reviewed-on: https://go-review.googlesource.com/12503
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This change fixes resolution of secure (https) repo URL for
git.apache.org Git repositories.
E.g. the correct repo URL for git.apache.org/thrift.git/lib/go/thrift is
https://git.apache.org/thrift.git, not https://git.apache.org/thriftFixes#10797
Change-Id: I67d5312ad8620eb780e42c2e002c8f286f60645a
Reviewed-on: https://go-review.googlesource.com/10092
Reviewed-by: Andrew Gerrand <adg@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
It's a bad test and it's worst on uniprocessors.
Fixes#11143.
Change-Id: I0164231ada294788d7eec251a2fc33e02a26c13b
Reviewed-on: https://go-review.googlesource.com/12522
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
