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  1. 20 Mar, 2017 15 commits
  3. 19 Mar, 2017 9 commits
    • Austin Clements's avatar
      runtime: disallow malloc or panic in scavenge · df6025bc
      Austin Clements authored 
      Mallocs and panics in the scavenge path are particularly nasty because
they're likely to silently self-deadlock on the mheap.lock. Avoid
sinking lots of time into debugging these issues in the future by
turning these into immediate throws.

Change-Id: Ib36fdda33bc90b21c32432b03561630c1f3c69bc
Reviewed-on: https://go-review.googlesource.com/38293
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarRick Hudson <rlh@golang.org>
      df6025bc
    • Austin Clements's avatar
      runtime: introduce a type for lfstacks · 13ae271d
      Austin Clements authored 
      The lfstack API is still a C-style API: lfstacks all have unhelpful
type uint64 and the APIs are package-level functions. Make the code
more readable and Go-style by creating an lfstack type with methods
for push, pop, and empty.

Change-Id: I64685fa3be0e82ae2d1a782a452a50974440a827
Reviewed-on: https://go-review.googlesource.com/38290
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: default avatarRick Hudson <rlh@golang.org>
      13ae271d
    • Martin Möhrmann's avatar
      cmd/compile: replace all uses of ptrto by typPtr · 2805d206
      Martin Möhrmann authored 
      This makes the overall naming and use of the functions
to create a Type more consistent.

Passes toolstash -cmp.

Change-Id: Ie0d40b42cc32b5ecf5f20502675a225038ea40e4
Reviewed-on: https://go-review.googlesource.com/38354Reviewed-by: default avatarMatthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      2805d206
    • Martin Möhrmann's avatar
      cmd/compile: reduce allocs when appending to Node slices · 00f4cacb
      Martin Möhrmann authored 
      Rewrite Append function such that the *Node slice argument does not escape.

Passes toolstash -cmp.

name      old alloc/op    new alloc/op    delta
Template     40.8MB ± 0%     40.8MB ± 0%  -0.17%  (p=0.000 n=20+19)
Unicode      30.3MB ± 0%     30.2MB ± 0%  -0.11%  (p=0.000 n=19+20)
GoTypes       115MB ± 0%      115MB ± 0%  -0.20%  (p=0.000 n=20+20)
Compiler      492MB ± 0%      491MB ± 0%  -0.25%  (p=0.000 n=20+20)
SSA           858MB ± 0%      858MB ± 0%  -0.08%  (p=0.000 n=20+20)
Flate        26.2MB ± 0%     26.2MB ± 0%  -0.13%  (p=0.000 n=20+19)
GoParser     32.5MB ± 0%     32.4MB ± 0%  -0.14%  (p=0.000 n=20+20)
Reflect      80.6MB ± 0%     80.4MB ± 0%  -0.27%  (p=0.000 n=20+20)
Tar          27.3MB ± 0%     27.3MB ± 0%  -0.12%  (p=0.000 n=20+19)
XML          43.1MB ± 0%     43.0MB ± 0%  -0.14%  (p=0.000 n=20+20)

name      old allocs/op   new allocs/op   delta
Template       400k ± 1%       397k ± 0%  -0.81%  (p=0.000 n=20+18)
Unicode        321k ± 1%       320k ± 0%  -0.43%  (p=0.000 n=20+20)
GoTypes       1.17M ± 0%      1.16M ± 0%  -0.89%  (p=0.000 n=20+20)
Compiler      4.59M ± 0%      4.54M ± 0%  -1.26%  (p=0.000 n=20+19)
SSA           7.68M ± 0%      7.65M ± 0%  -0.37%  (p=0.000 n=18+18)
Flate          242k ± 1%       240k ± 1%  -0.70%  (p=0.000 n=20+20)
GoParser       323k ± 1%       321k ± 1%  -0.64%  (p=0.000 n=20+20)
Reflect       1.01M ± 0%      1.00M ± 0%  -0.92%  (p=0.000 n=20+19)
Tar            258k ± 1%       256k ± 1%  -0.60%  (p=0.000 n=20+19)
XML            403k ± 1%       400k ± 0%  -0.78%  (p=0.000 n=20+20)

Change-Id: Ie1eb603dc46f729574f6a76c08085b2619249be4
Reviewed-on: https://go-review.googlesource.com/37437Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      00f4cacb
    • Michel Lespinasse's avatar
      cmd/pprof: use proxy from environment · 81bcc470
      Michel Lespinasse authored 
      See #18736

Change-Id: I9c16357c05c16db677125d3077ee466b71559c7a
Reviewed-on: https://go-review.googlesource.com/38343Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      81bcc470
    • Josh Bleecher Snyder's avatar
      cmd/compile: clean up SSA test API · a68e5d94
      Josh Bleecher Snyder authored 
      I noted in CL 38327 that the SSA test API felt a bit
clunky after the ssa.Func/ssa.Cache/ssa.Config refactoring,
and promised to clean it up once the dust settled.
The dust has settled.

Along the way, this CL fixes a potential latent bug,
in which the amd64 test context was used for all dummy Syslook calls.
The lone SSA test using the s390x context did not depend on the
Syslook context being correct, so the bug did not arise in practice.

Change-Id: If964251d1807976073ad7f47da0b1f1f77c58413
Reviewed-on: https://go-review.googlesource.com/38346
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
      a68e5d94
    • Josh Bleecher Snyder's avatar
      cmd/compile: canonicalize empty interface types · 62947bed
      Josh Bleecher Snyder authored 
      Mapping all empty interfaces onto the same Type
allows better reuse of the ptrTo and sliceOf
Type caches for *interface{} and []interface{}.

This has little compiler performance impact now,
but it will be helpful in the future,
when we will eagerly populate some of those caches.

Passes toolstash-check.

Change-Id: I17daee599a129b0b2f5f3025c1be43d569d6782c
Reviewed-on: https://go-review.googlesource.com/38344
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarMatthew Dempsky <mdempsky@google.com>
      62947bed
    • Josh Bleecher Snyder's avatar
      cmd/compile: add more types to ssa.Types · 872db799
      Josh Bleecher Snyder authored 
      This reduces the number of calls back into the
gc Type routines, which will help performance
in a concurrent backend.
It also reduces the number of callsites
that must be considered in making the transition.

Passes toolstash-check -all. No compiler performance changes.

Updates #15756

Change-Id: Ic7a8f1daac7e01a21658ae61ac118b2a70804117
Reviewed-on: https://go-review.googlesource.com/38340
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarMatthew Dempsky <mdempsky@google.com>
      872db799
    • Josh Bleecher Snyder's avatar
      cmd/compile: separate ssa.Frontend and ssa.TypeSource · aea3aff6
      Josh Bleecher Snyder authored 
      Prior to this CL, the ssa.Frontend field was responsible
for providing types to the backend during compilation.
However, the types needed by the backend are few and static.
It makes more sense to use a struct for them
and to hang that struct off the ssa.Config,
which is the correct home for readonly data.
Now that Types is a struct, we can clean up the names a bit as well.

This has the added benefit of allowing early construction
of all types needed by the backend.
This will be useful for concurrent backend compilation.

Passes toolstash-check -all. No compiler performance change.

Updates #15756

Change-Id: I021658c8cf2836d6a22bbc20cc828ac38c7da08a
Reviewed-on: https://go-review.googlesource.com/38336Reviewed-by: default avatarMatthew Dempsky <mdempsky@google.com>
      aea3aff6
  5. 18 Mar, 2017 4 commits
  7. 17 Mar, 2017 12 commits
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