Split out the code that computes the initial inline "hairyness" budget
for a function so that it can be reused (in a later patch). This is a
pure refactoring; no change in compiler functionality.
Change-Id: I9b1b7b10a7c480559b837492b10eb08771b7a145
Reviewed-on: https://go-review.googlesource.com/c/go/+/514795
Run-TryBot: Than McIntosh <thanm@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Rename the ir-local function "reassigned" to "Reassigned" so that it
can be used as part of inline heuristic analysis. Fix up the header
comment along that way, which had some stale material. Add support for
detecting reassignments via OASOP (as opposed to just simple
assignments).
Updates #61502.
Change-Id: I50f40f81263c0d7f61f30fcf0258f0b0f93acdca
Reviewed-on: https://go-review.googlesource.com/c/go/+/511560
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Add some machinery to support computing function "properties" for use
in driving inlining heuristics, and a unit testing framework to check
to see if the property computations are correct for a given set of
canned Go source files. This CL is mainly the analysis skeleton and a
testing framework; the code to compute the actual props will arrive in
a later patch.
Updates #61502.
Change-Id: I7970b64f713d17d7fdd7e8e9ccc7d9b0490571bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/511557
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
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Add definitions for a set of Go function "properties" intended to be
useful for driving inlining decisions. This CL just defines a set of
flags and a container to hold them; a subsequent CL will add code to
compute the properties for a function given its IR/AST representation.
Updates #61502.
Change-Id: Ifa26c1ad055c02ca0ce9cf37078cee7b3385e18a
Reviewed-on: https://go-review.googlesource.com/c/go/+/511556
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Reviewed-by: Than McIntosh <thanm@google.com>
The URL return value from the fetch helper in web.get was always
either the passed in URL (on success) or nil (on failure).
Remove it to reduce code complexity.
For #61877.
Change-Id: I0ce4602b921d1c996aa988e7d3f83996511ccd72
Reviewed-on: https://go-review.googlesource.com/c/go/+/518016
Run-TryBot: Bryan Mills <bcmills@google.com>
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Auto-Submit: Bryan Mills <bcmills@google.com>
The -pgo build setting is added late, so sort it into place.
Noticed while working on CL 504536.
Change-Id: I080d2389dc0b3176fb72c9e2434e5f3ae70e294e
Reviewed-on: https://go-review.googlesource.com/c/go/+/504537
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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This flag is not terribly useful with the go command, which will pass
all environment variables through to subprocesses it invokes,
but it can be useful in other build systems, notably blaze and bazel,
to pass compiler-debugging variables like GOSSAFUNC through to
the compiler.
We have been maintaining this as a patch against Google's internal
toolchain for many years, and it has proven useful in those non-go-command
contexts.
Change-Id: Ic123193319f3c838a694eda2575347c516b85ac7
Reviewed-on: https://go-review.googlesource.com/c/go/+/507977
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Most of repetitive rules in riscv64 are simple, so that we can simplify and fold it with | without losting rules readability.
No change in the actual compiler code after running rulegen.
Change-Id: Id0bbfd93e63b49b7f66ecb62eb9440b4900c7938
Reviewed-on: https://go-review.googlesource.com/c/go/+/498455
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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When we were comparing the first element of import stacks when sorting
depserrors we checked if the first stack was non empty, but not the
second one. Do the check for both stacks.
Fixes#61816
For #59905
Change-Id: Id5c11c2b1104eec93196a08c53372ee2ba97c701
Reviewed-on: https://go-review.googlesource.com/c/go/+/516739
Reviewed-by: Bryan Mills <bcmills@google.com>
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Open-coded defer slots are assigned indices upfront, so they're
logically like elements in an array. Without reassigning the indices,
we need to keep all of the elements alive so their relative offsets
are correct.
Fixes#61895.
Change-Id: Ie0191fdb33276f4e8ed0becb69086524fff022b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/517856
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Change-Id: I7658f2f1716f74b4ff0b4b9f8ccd386e99dd9d51
Change-Id: I7658f2f1716f74b4ff0b4b9f8ccd386e99dd9d51
GitHub-Last-Rev: f55b84dafb
GitHub-Pull-Request: golang/go#61831
Reviewed-on: https://go-review.googlesource.com/c/go/+/516935
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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This includes version-dependent support for GOEXPERIMENT and
-d=loopvar, -d=loopvarhash, to allow testing/porting of old code.
Includes tests of downgrade (1.22 -> 1.21) and upgrade (1.21 -> 1.22)
based on //go:build lines (while running a 1.22 build/compiler).
Change-Id: Idd3be61a2b46acec33c7e7edac0924158cc726b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/508819
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
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This test used to run with a separate goroutine for timeout behavior,
presumably because it was difficult to set an appropriate timeout.
Now that the test is in cmd instead of misc, we can use
internal/testenv.Command, which makes adding the test timeout much
simpler and eliminates the need for the explicit goroutine.
For #61846.
Change-Id: I68ea09fcf2aa394bed1e900cf30ef7d143fa249f
Reviewed-on: https://go-review.googlesource.com/c/go/+/517095
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Add support for SEB/SEH instructions, which are introduced in mips32r2.
SEB/SEH can be used to sign-extend byte/halfword in registers directly without passing through memory.
Ref: The MIPS32 Instruction Set, Revision 5.04: https://s3-eu-west-1.amazonaws.com/downloads-mips/documents/MD00086-2B-MIPS32BIS-AFP-05.04.pdf
Updates #60072
Change-Id: I33175ae9d943ead5983ac004bd2a158039046d65
Reviewed-on: https://go-review.googlesource.com/c/go/+/515475
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This CL optimizes open-coded defers in two ways:
1. It modifies local variable sorting to place all open-coded defer
closure slots in order, so that rather than requiring the metadata to
contain each offset individually, we just need a single offset to the
first slot.
2. Because the slots are in ascending order and can be directly
indexed, we can get rid of the count of how many defers are in the
frame. Instead, we just find the top set bit in the active defers
bitmask, and load the corresponding closure.
Change-Id: I6f912295a492211023a9efe12c94a14f449d86ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/516199
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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These fields are no longer needed since go.dev/cl/513837.
Change-Id: I980fc9db998c293e930094bbb87e8c8f1654e39c
Reviewed-on: https://go-review.googlesource.com/c/go/+/516198
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Reviewed-by: Keith Randall <khr@google.com>
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CL 497276 added optimization for len(string([]byte)) by avoiding call to
slicebytetostring. However, the bytes to string expression may contain
init nodes, which need to be preserved. Otherwise, it would make the
liveness analysis confusing about the lifetime of temporary variables
created by init nodes.
Fixes#61778
Change-Id: I6d1280a7d61bcc75f11132af41bda086f084ab54
Reviewed-on: https://go-review.googlesource.com/c/go/+/516375
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Reviewed-by: Keith Randall <khr@google.com>
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Sorting variables by size doesn't actually do anything, but sorting by
alignment makes sure we can optimally pack variables into the stack
frame.
While here, replace the monolithic description at the top of
cmpstackvarlt with line-by-line explanations of what each comparison
is doing.
Change-Id: I860677799618130ce4a55f084cec637cb9a2e295
Reviewed-on: https://go-review.googlesource.com/c/go/+/516197
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These aren't used and don't do anything useful anyway.
Change-Id: I2865f6bbb0409fa59b1fde32abb7c5f81a6bdb7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/516195
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
For #60088
Change-Id: Id19435e864bcfd2adbb1492db3f8cdf2ee3c915e
Reviewed-on: https://go-review.googlesource.com/c/go/+/515175
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Change-Id: If8fc77d5b04b2979707032d91112d4f33ef5e3da
GitHub-Last-Rev: d82d769c04
GitHub-Pull-Request: golang/go#55913
Reviewed-on: https://go-review.googlesource.com/c/go/+/435536
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: qiulaidongfeng <2645477756@qq.com>
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Change-Id: I476e2a75f39c876fa9c071cada36573740d546de
GitHub-Last-Rev: dec3fb438f
GitHub-Pull-Request: golang/go#61783
Reviewed-on: https://go-review.googlesource.com/c/go/+/516395
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Stop using BTSconst and friends when ORLconst can be used instead.
OR can be issued by more function units than BTS can, so it could
lead to better IPC. OR might take a few more bytes to encode, but
not a lot more.
Still use BTSconst for cases where the constant otherwise wouldn't
fit and would require a separate movabs instruction to materialize
the constant. This happens when setting bits 31-63 of 64-bit targets.
Add BTS-to-memory operations so we don't need to load/bts/store.
Fixes#61694
Change-Id: I00379608df8fb0167cb01466e97d11dec7c1596c
Reviewed-on: https://go-review.googlesource.com/c/go/+/515755
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The recent version of darwin linker ld64 emits an warning about
deprecation of the -no_pie flag. Further, the new darwin linker
ld-prime ignores -no_pie flag and generates a PIE binary anyway.
Switch to building PIE binaries by default.
Updates #54482.
Updates #61229.
Change-Id: I81294dcd07a368a20e1349d56556ee2fdcb8df44
Reviewed-on: https://go-review.googlesource.com/c/go/+/461697
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The go/types changes are matching but the API changes are hidden
for now, pending acceptance of a respective proposal.
Change-Id: I2e38ff215ddbdcf93f182d3e70c03802d3ca4338
Reviewed-on: https://go-review.googlesource.com/c/go/+/515135
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Reviewed-by: Robert Findley <rfindley@google.com>
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It should be possible for the importer to construct an invalid
interface, as would have been produced by type checking.
Fixes#61737
Change-Id: I72e063f4f1a6205d273a623acce2ec08c34c3cc2
Reviewed-on: https://go-review.googlesource.com/c/go/+/515555
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Olif Oftimis <oftimisolif@gmail.com>
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Rather than having register encoding knowledge in each caller of opxrrr,
pass the registers into opxrrr and let it handle the encoding. This reduces
duplication and improves readability.
Change-Id: I202c503465a0169277a0f64340598203c9dcf20c
Reviewed-on: https://go-review.googlesource.com/c/go/+/461140
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The existing Thread Local Storage (TLS) implementation for riscv64 uses
initial-exec (IE) mode, however a MOV of a TLS symbol currently loads the
thread pointer offset and not the actual address or memory location.
Rework TLS on riscv64 to generate the full instruction sequence needed to
load from or store to a TLS symbol. Additionally, provide support for both
initial-exec (IE) and local-exec (LE) TLS - in many cases we can use LE,
which is slightly more efficient and easier to support in the linker.
Change-Id: I1b43f8888b3b6b10354bbb79d604771e64d92645
Reviewed-on: https://go-review.googlesource.com/c/go/+/431103
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Displaying assembly language has never worked for Apple Silicon
macs (see #50891). This change uses mach_vm_region to obtain the
necessary VM mappings to allow for locating assembly instructions
for a cpu profile.
Fixes#50891
Change-Id: Ib968c55a19b481b82f63337276b552f3b18f69d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/503919
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All TestPointerChecks cases can be executed on Windows with some minor
tweaks.
It seems that the skip has been cargo-culted from when cgo error tests
were first added in https://codereview.appspot.com/13498046.
Change-Id: I39cd05f4c90965b669d2b403f7fcd9dd9c69016c
Reviewed-on: https://go-review.googlesource.com/c/go/+/514296
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Add support for WSBH/DSBH/DSHD instructions, which are introduced in mips{32,64}r2.
WSBH reverse bytes within halfwords for 32-bit word, DSBH reverse bytes within halfwords for 64-bit doubleword, and DSHD reverse halfwords within doublewords. These instructions can be used to optimize byte swaps.
Ref: The MIPS64 Instruction Set, Revision 5.04: https://s3-eu-west-1.amazonaws.com/downloads-mips/documents/MD00087-2B-MIPS64BIS-AFP-05.04.pdf
Updates #60072
Change-Id: I31c043150fe8ac03027f413ef4cb2f3e435775e1
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Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
posVers exists once for an entire package. Move it into the group
of fields related to the entire package (and out from the group
of fields that are specific to each batch of files).
Change-Id: I40ea722578408bdf2b85db91b65680e720c0c502
Reviewed-on: https://go-review.googlesource.com/c/go/+/514998
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macOS may write a .DS_Store file to any directory at any time in
the general case, unfortunately. Expand test rules to catch them
no matter where they may appear.
For #24904.
Change-Id: I98a2bb5d0ae2ab3a191ff87b33d6f8048ca39aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/514898
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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I was trying out gorebuild (a program that runs make.bash many times)
on a macOS system. Unfortunately there were a few failed invocations
on my first try, but not with a very good or interesting reason:
go tool dist: unexpected new file in $GOROOT/bin: .DS_Store
Tolerate it since it's not unexpected, and will not affect the build.
Change-Id: I656536b896098c2ba934667196d4ce82e706c8da
Reviewed-on: https://go-review.googlesource.com/c/go/+/513763
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It is the responsibility of go/types to complete any interface it
creates, except for those created by the user using NewInterface.
However, this was not being done for interfaces created during
instantiation.
Fix this by (rather carefully) ensuring that all newly created
interfaces are eventually completed.
Fixesgolang/go#61561
Change-Id: I3926e7c9cf80714838d2c1b5f36a2d3221c60c41
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We're not going to disable this functionality as it would
invalidate code that now type-checks with type inference
based on this mechanism.
Change-Id: Ib11059e2f70a5a209693b06f754cba862e3650ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/514715
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This CL uses mips hardware NOP instruction as NOOP on mips platform, instead of pseudo NOP "nor $zero,$zero,$zero".
Change-Id: I336e1ba4228b71e6bfc6be66b367a4327fb3b36e
Reviewed-on: https://go-review.googlesource.com/c/go/+/509015
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Fixes#61629
This reduce the pressure on regalloc because then the loop only keep alive
one value (the iterator) instead of the iterator and the upper bound since
the comparison now acts against an immediate, often zero which can be skipped.
This optimize things like:
for i := 0; i < n; i++ {
Or a range over a slice where the index is not used:
for _, v := range someSlice {
Or the new range over int from #61405:
for range n {
It is hit in 975 unique places while doing ./make.bash.
Change-Id: I5facff8b267a0b60ea3c1b9a58c4d74cdb38f03f
Reviewed-on: https://go-review.googlesource.com/c/go/+/512935
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Auto-Submit: Keith Randall <khr@golang.org>
Rather than passing registers as uint32, use int16 and cast to uint32 in
the OP_FRRR/OP_SRR implementation. This allows a large number of casts to be
removed and code simplified at call sites.
Change-Id: Ia4bf3bd022f79d65e45fca64db13db12739e5b23
Reviewed-on: https://go-review.googlesource.com/c/go/+/514099
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rong Zhang <rongrong@oss.cipunited.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Rather than passing registers as uint32, use int16 and cast to uint32 in
the OP_IRR implementation. This allows a large number of casts to be removed
and code simplified at call sites. Also be more consistent with op, register
and value ordering.
Change-Id: I510347d97787ce80a338037b25470addf3a2939d
Reviewed-on: https://go-review.googlesource.com/c/go/+/514098
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Rong Zhang <rongrong@oss.cipunited.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Rather than passing registers as uint32, use int16 and cast to uint32 in
the OP_RRR implementation. This allows a large number of casts to be removed
and code simplified at call sites.
Change-Id: I2194ea07a6f89861530cd88c4b60c993bb0fa0c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/514097
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rong Zhang <rongrong@oss.cipunited.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gopher Robot <gobot@golang.org>
Instead of comparing register values to 0, use obj.REG_NONE to improve
readability. No functional change.
Change-Id: I848f7ab7e27fe7e5e9fe2caf9cce47e372c6cd6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/514096
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Rong Zhang <rongrong@oss.cipunited.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Junxian Zhu <zhujunxian@oss.cipunited.com>
This is a band-aid of a fix for Go 1.21, to create space to work on
a real fix for Go 1.22, if in fact the real fix is different. It simply
disables the go.sum update check during go list -m -u.
I don't have a self-contained test for the breakage. See #61605.
All existing tests continue to pass.
For #61605.
After merging into the Go 1.21 branch we can move #61605 to the Go 1.22 milestone.
Change-Id: Ib155710092003f08d2a6ce0aefa8e0270cad5a5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/513778
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Than McIntosh
Bryan C. Mills
Russ Cox
Junxian Zhu
Michael Anthony Knyszek
Cuong Manh Le
Michael Matloob
Matthew Dempsky
qiulaidongfeng
David Chase
cui fliter
adetunjii
Keith Randall
Cherry Mui
Robert Griesemer
Robert Findley
Joel Sing
Cosmos Nicolaou
qmuntal
Srinivas Pokala
Mauri de Souza Meneguzzo
Dmitri Shuralyov
Jorropo