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Releases: goplus/llgo

v0.8.10

02 Jul 13:29
@xushiwei xushiwei
v0.8.10
75ca4af
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v0.8.10

features:

libraries:

demos:

  • cppmintf: implements multiple intefaces in c++ (#398)
  • cmptest: sortdemo (#418)
  • cmptest: iodemo, fmtdemo (#437)

changes:

  • cl linkname: not exist method warning (#436)
  • llgo/ssa: phi.AddIncoming fix: use checkExpr (#419)
  • llgo/ssa: fix slice high (#428)
  • llgo/ssa: makeSlice fit int size and check (#425)
  • llgo/ssa: fix abiType && abiMethoOf (#392)
  • llgo/ssa: fix abiType & abiNamedOf (#417)
  • llgo/ssa: fix abi patch types.pointer (#434)
  • runtime: global abi basic (#421)
  • runtime: panic with any custom type (#399)
  • runtime: type align (#405)
  • build: fix link runtime (#438)
  • c/llama2: rm precompiled *.ll files (#407)
  • c/llama2: explicitly link libm to ensure compatibility with Linux (#408)
  • xtool: utilize llvm-config to find LLVM executables (#424)
  • update bytealg for pkg bytes/strings (#428)
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v0.8.9

22 Jun 17:50
@xushiwei xushiwei
v0.8.9
df39b66
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v0.8.9

highlights:

  • go syntax: support generics
  • go libraries: syscall, strconv, sort, reflect, math/cmplx, os, sync, sync/atomic
  • c libraries: c/os, c/math/cmplx, c/sync/atomic, c/pthread/sync
  • cmd: llgo cmptest [build flags] [packages] (#391 #393)

features:

  • patch library: llgo:skipall (#332 #343)
  • patch library: call init (#352 #355)
  • library: syscall (#366)
  • library: strconv (#369)
  • library: sort (#384 #385)
  • library: reflect (#371 #379 #380 #381 #382)
  • library: c/math/cmplx, math/cmplx (#368 #374)
  • library: c/os, os, demo: getcwd (#364 #376)
  • library: c/sync/atomic, sync/atomic (#326 #327 #328 #332 #333)
  • library: c/pthread/sync, sync (#339 #343 #348 #350)
  • library: c/cjson, c/sqlite README: how to install (#322 #365)
  • library: c string library (#364)
  • runtime: tracePanic (#363)
  • cl: c.Func (llgo.funcAddr) (#387)
  • cl: demo: cppintf (how to use c++ interface) (#387 #388 #389)
  • llgo/ssa: complex op and print/panic (#373)
  • builtin: real/imag/complex (#368)
  • build: instantiate generics (#351)
  • build: use -dead_strip to reduce app size (#325 #331)
  • build: LLGoFiles (support to compile c files) (#335)
  • build: overlayFiles for fix math on amd64 (#383)
  • build: disable verbose info for deps (#386)
  • cmd: llgo cmptest [build flags] [packages] (#391 #393)

changes:

  • llgo/ssa: fix ssa.Index and indexType (#330)
  • llgo/ssa: index/indexAddr check range (#346)
  • llgo/ssa: abi.TypeName fix: error interface is public (#364)
  • llgo/ssa: fix reentrant of ABI initialization (#377 #378)
  • cl: check context.inCFunc (#347)
  • cl: compileFuncDecl/funcName fix (#343)
  • cl: fn.SetRecover (#352)
  • patch library: fix (link dependencies) (#343)
  • patch library: llgo/ssa/abi: PathOf fix - support trim PatchPathPrefix (#360)
  • typepatch fix: don't change patch pkg (#360)
  • typepatch fix (don't change types) (#333)
  • typepatch: fix globalType (#348)
  • build: explicitly link libpthread for compatibility with glibc versions before 2.34 (#334)
  • build: set $GOPATH/bin as default GOBIN for Config.BinPath (#362)
  • build: remove check for default GOPATH and GOROOT being identical (#375)
  • library c: c.Int/Uint not alias C.int/uint (#349)
  • README: update install instruction of LLGOROOT (#356)
  • README: update python & install instructions (#357)
  • ci,README: improve install instructions (#338)
  • ci,README: add Dependencies section and update install instructions accordingly (#342)
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v0.8.8

15 Jun 15:50
@xushiwei xushiwei
v0.8.8
f77fd2a
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v0.8.8

highlights:

features:

changes:

  • runtime: expand abi array (#315)
  • runtime: rm internal/runtime/c (#319)
  • llgo/ssa: float Const fix (#303)
  • llgo/ssa: global use elem type (#313)
  • internal/abi.Map: IndirectKey/IndirectElem (#318)
  • testlibgo: mv math => mathbits (#304)
  • cl: replace runtime => llgo/internal/runtime (#303)
  • fix LLGO_LIB_PYTHON instruction (#308)
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v0.8.7

12 Jun 15:42
@xushiwei xushiwei
v0.8.7
5055251
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v0.8.7

highlights:

  • support defer & panic
  • support gc

features:

changes:

  • llgo/ssa: python.go (#274)
  • cl: test decl only pkg kind (#297)
  • build: llgo run should raise running errors (#294 #300)
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v0.8.6

05 Jun 07:45
@xushiwei xushiwei
v0.8.6
ed19a69
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v0.8.6

highlights:

  • support goroutine
  • support defer

features:

  • goroutine (#254 #255 #256)
  • defer (#261 #262 #263 #264 #273)
  • cl/blocks (#273)
  • llgo/ssa: memory (malloc/free) (#255)
  • llgo/ssa: Do Call/Go/Defer (#251)
  • llgo/ssa: Builtin (#257)
  • llgo/ssa: IfThen/RunDefers/EndBuild (#261)
  • llgo/ssa: DeferAlways/DeferInCond/DeferInLoop (#263)
  • llgo/ssa: MakeInterface check abi.KindDirectIface (#258)
  • build: support pkg-config and link args (#269)

changes:

  • c/sqlite (#266)
  • cl: fix cl/_testrt/cast (#268)
  • llgo/ssa: NoArgsNoRet (#270)
  • llgo/ssa: fix llvm named in func (#252)
  • mod: golang.org/x/tools v0.22.0
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v0.8.5

31 May 01:46
@xushiwei xushiwei
v0.8.5
f607cd8
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v0.8.5

highlights:

  • fully supports Go interface
  • python libraries: builtins, matplotlib

features:

python libraries:

changes:

  • cl: funcOf fix: call pyfunc multiple times (#208)
  • llgo/ssa: update linkname to go style (#246)
  • llgo/ssa: TypeAssert bugfix (#229)
  • llgo/ssa: AfterInit bugfix (#240 #241)
  • llgo/ssa: fix slice type from *array (#247)
  • llgo/ssa: fix type toNamed (#225)
  • llgo/ssa: Builder add member Pkg (#213)
  • llgo/ssa: pkg.PyLoadModSyms (source code stablility) (#210)
  • llgo/ssa: {datstruct, interface}.go (#211)
  • llgen.Gen fix: use imp (#207)
  • remove runtime.NewString (#222)
  • remove runtime NewSlice (use b.unsafeSlice) (#242)
  • remove c2go support (#203 #204)
  • mod: github.com/goplus/gogen v1.16.0
  • mod: github.com/goplus/llvm v0.7.6
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v0.8.3

18 May 10:07
@xushiwei xushiwei
v0.8.3
908f004
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v0.8.3

libraries:

features:

  • llgo/ssa: builtin print/println (#183)
  • llgo/ssa: type uint/byte/int32/uint32/int64/uint64 (#193)
  • llgo/ssa: checkIndex for index/indexAddr (#199)
  • llpyg: use pysigfetch (by goplus/hdq) (#202)
  • pysig.Parse (#192)
  • naming convention: Cstr (for Go+) (#198)

changes:

  • llgo/ssa: binop fix - shl/shr size (#187)
  • llgo/ssa: binop check shl/shr (#188)
  • llgo/ssa: fix castInt (#191)
  • llgo/ssa: fix global array (#197)
  • llgo/ssa: main func return 0 (#189 #195)
  • mv x/ => c/ (#201)
  • build: fix -L dir (#190)
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v0.8.2

15 May 16:33
@xushiwei xushiwei
v0.8.2
2a35ffc
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v0.8.2

libraries:

devtools:

features:

  • llgo instr: pyList (#177)
  • llgo: support pyVar (#179)
  • cl: _testpy/pow (multiargs) (#173)
  • cl: _testpy/gcd (python variadic function) (#175)
  • ssa: builtin append (#174)
  • build: support link packages out of llgo (#162)
  • README (#178 #184)

changes:

  • ssa: fix binop string cat ret type (#166)

C standard libary support

package main

import "github.com/goplus/llgo/c"

func main() {
	c.Printf(c.Str("Hello world\n"))
}

This is a simple example of calling the C printf function to print Hello world. Here, c.Str is not a function for converting a Go string to a C string, but a built-in instruction supported by llgo for generating a C string constant.

The _demo directory contains some C standard libary related demos (it start with _ to prevent the go command from compiling it):

  • hello: call C printf to print Hello world
  • concat: call C fprintf with stderr
  • qsort: call C function with a callback (eg. qsort)

To run these demos (If you haven't installed llgo yet, please refer to How to install):

export LLGOROOT=`pwd`
cd <demo-directory>  # eg. cd _demo/hello
llgo run .

See github.com/goplus/llgo/c for more detials.

Python support

You can import a Python library in LLGo!

And you can import any Python library into llgo through a program called llpyg (see Development tools). The currently imported libraries include:

Here is an example using the Python math library:

package main

import (
	"github.com/goplus/llgo/c"
	"github.com/goplus/llgo/py"
	"github.com/goplus/llgo/py/math"
)

func main() {
	x := math.Sqrt(py.Float(2))
	c.Printf(c.Str("sqrt(2) = %f\n"), x.Float64())
}

Here, We call py.Float(2) to create a Python number 2, and pass it to Python’s math.sqrt to get x. Then use x.Float64() to convert x to Go's float64 type, and print the value through the C printf function.

Let's look at a slightly more complex example. For example, we use numpy to calculate:

package main

import (
	"github.com/goplus/llgo/c"
	"github.com/goplus/llgo/py"
	"github.com/goplus/llgo/py/numpy"
)

func main() {
	a := py.List(
		py.List(1.0, 2.0, 3.0),
		py.List(4.0, 5.0, 6.0),
		py.List(7.0, 8.0, 9.0),
	)
	b := py.List(
		py.List(9.0, 8.0, 7.0),
		py.List(6.0, 5.0, 4.0),
		py.List(3.0, 2.0, 1.0),
	)
	x := numpy.Add(a, b)
	c.Printf(c.Str("a+b = %s\n"), x.Str().CStr())
}

Here we define two 3x3 matrices a and b, add them to get x, and then print the result.

The _pydemo directory contains some python related demos:

  • callpy: call Python standard library function math.sqrt
  • pi: print python constants math.pi
  • statistics: define a python list and call statistics.mean to get the mean
  • matrix: a basic numpy demo

To run these demos, you need to set the LLGO_LIB_PYTHON environment variable first.

If Python is in the search path for clang linking, then LLGO_LIB_PYTHON only needs to be set to the name of the Python library. For example:

export LLGO_LIB_PYTHON=python3.12

You can also specify the path to tell llgo where the Python library is located:

export LLGO_LIB_PYTHON=/foo/bar/python3.12

For example, /opt/homebrew/Frameworks/Python.framework/Versions/3.12/libpython3.12.dylib is a typical python library location under macOS. So we should set it like this:

export LLGO_LIB_PYTHON=/opt/homebrew/Frameworks/Python.framework/Versions/3.12/python3.12

Note that the file name must be written in a platform-independent format, using python3.12 instead of libpython3.12.dylib.

Then you can run the demos:

export LLGOROOT=`pwd`
cd <demo-directory>  # eg. cd _pydemo/callpy
llgo run .

See github.com/goplus/llgo/py for more detials.

Other frequently used libraries

LLGo can easily import any libraries from the C ecosystem. Currently, this import process is still manual, but in the future, it will be automated similar to Python library imports.

The currently imported libraries include:

Here are some examples related to them:

  • llama2-c: inference Llama 2 (It's the first llgo AI example)
  • mkjson: create a json object and print it
  • sqlitedemo: a basic sqlite demo

Go syntax support

The priority of llgo feature iteration is:

  • Popular C/Python libraries
  • Full Go syntax
  • Go standard libraries
  • Popular Go packages

Common Go syntax is already supported. Except for the following, which needs to be improved:

  • interface (Limited support)
  • map (Very limited support)
  • panic (Limited support)
  • recover (Not supported yet)
  • defer (Not supported yet)
  • gc (Not supported yet)
  • chan (Not supported yet)
  • goroutine (Not supported yet)
  • generics (Not supported yet)

Here are some examples related to Go syntax:

  • concat: define a variadic function
  • genints: various forms of closure usage (including C function, recv.method and anonymous function)

How to install

Follow these steps to generate the llgo command (its usage is the same as the go command):

on macOS

brew update  # execute if needed
brew install llvm@17
go install -v ./...

on Linux

echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-17 main' | sudo tee /etc/apt/sources.list.d/llvm.list
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
sudo apt-get update  # execute if needed
sudo apt-get install --no-install-recommends llvm-17-dev
go install -v ./...

on Windows

TODO

Development tools

  • pydump: It's the first program compiled by llgo (NOT go) in a production environment. It outputs symbol information (functions, variables, and constants) from a Python library in JSON format, preparing for the generation of corresponding packages in llgo.
  • llpyg: It is used to automatically convert Python libraries into Go packages that llgo can import. It depends on pydump to accomplish the task.
  • llgen: It is used to compile Go packages into LLVM IR files (*.ll).
  • ssadump: It is a Go SSA builder and interpreter.

How do I generate these tools?

go install -v ./...  # compile all tools except pydump
cd chore/_xtool
llgo install ./...   # compile pydump

Key modules

Below are the key modules for understanding the implementation principles of llgo:

  • llgo/ssa: It generates LLVM IR files (LLVM SSA) using the semantics (interfaces) of Go SSA. Although LLVM SSA and Go SSA are both IR languages, they work at completely different levels. LLVM SSA is closer to machine code, which abstracts different instruction sets. While Go SSA is closer to a high-level language. We can think of it as the instruction set of the Go computer. llgo/ssa is not just limited to the llgo compiler. If we view it as the high-level expressive power of LLVM, you'll find it very useful. Prior to llgo/ssa, you had to operate LLVM using machine code semantics. But now, with the advanced SSA form (in the semantics of Go SSA), you can conveniently utilize LLVM.
  • llgo/cl: It is the core of the llgo compiler. It converts a Go package into LLVM IR files. It depends on llgo/ssa.
  • llgo/internal/build: It strings together the entire compilation process of llgo. It depends on llgo/ssa and llgo/cl.
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v0.8.1

12 May 17:03
@xushiwei xushiwei
v0.8.1
1463ed4
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v0.8.1

highlights:

  • Now you can import a Python library in llgo!

features:

changes:

  • llgo/ssa: fix types named recursive (#147)
  • mv x/<tool> => xtool/<tool> (#143)
  • nmindex: query auto add _ prefix (#144)

Python support

You can import a Python library in llgo! For example:

package main

import (
	"github.com/goplus/llgo/c"
	"github.com/goplus/llgo/py"
	"github.com/goplus/llgo/py/math"
)

func main() {
	x := math.Sqrt(py.Float(2))
	c.Printf(c.Str("sqrt(2) = %f\n"), x.Float64())
}

Here, We call py.Float(2) to create a Python floating point number 2, and pass it to Python’s math.sqrt to get x. Then use x.Float64() to convert the Python object to Go's float64 type, and finally we print the value through C printf.

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v0.7.0

09 May 12:55
@xushiwei xushiwei
v0.7.0
c9cc7ad
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v0.7.0

highlights:

  • Through llama2 and python, this version verifies the natural synergy between llgo and the C ecosystem.

libraries:

demos:

  • llama2-c: inference Llama 2 (It's the first llgo AI example) (#128)
  • hellopy: link Python to Go and say Hello world (#138)

features:

  • cl: PkgLinkIR, PkgLinkExtern (#126 #137)
  • cl: // llgo:link as alias of //go:linkname (#127)
  • llgo/ssa: UnOp (#125)
  • llgo/ssa: Convert real numeric types (#132)
  • llgo/ssa: Bitcast float => iface.data (#136)
  • build: decodeLinkFile (support *.lla) (#130)

changes:

  • cl: importPkg refactor: don't depend token.Pos (#127)
  • cl: checkVArgs bugfix (#134)
  • nmindex: support python (#135)
  • mod: golang.org/x/tools v0.21.0
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