4 ms·

Libgraal: GraalVM compiler as a precompiled GraalVM native image

50 points by fniephaus 7y ago

singularity2001 7y ago
can it be run in wasm and output native code (instead of teavm bytecode)?
- tom_mellior 7y ago
  The GraalVM compiler emits native code. It consumes JVM bytecode, or intermediate representations of other programming languages implemented using the Truffle framework.
- pron 7y ago
  I assume that a WASM backend could be created for Graal Native Image, so that it could compile Java byteocde to WASM ahead of time, but I wonder what benefits that would have over compiling bytecode to JS (as TeaVM does).
  - singularity2001 7y ago
    There is now a pure wasm version of TeaVM. My idea was that graal could run in wasm and compile to wasm, the (only) benefits would be faster and smaller code.
    - pron 7y ago
      I'm not sure it would be either. JS has a good JIT that Java code can significantly benefit from (much more than, say, C) -- WASM doesn't, so compiling to JS could actually be faster; JS also has a GC and WASM doesn't, which means that the image must contain a GC, making it larger, not smaller. Either way, it's speculation, but I don't think it's obvious that compiling Java bytecode to WASM is preferable to compiling it to JS, but maybe the TeaVM maintainers can share their experience.
pragmaticlurker 7y ago
but still no Windows support for native image, plus no position independent code on *nix platforms
- grashalm 7y ago
  This is about using native-image for the Graal compiler when used as a JIT in HotSpot. There are Windows builds for this available here[1]. Not sure what you mean by position independent code in the context of libgraal. But I don't think it is relevant. [1] https://www.graalvm.org/downloads/ https://www.graalvm.org/downloads/
  - pjmlp 7y ago
    > We provide pre-built binaries for GraalVM CE for Linux and Mac OS X on x86 64-bit systems. No mention of Windows
    - grashalm 7y ago
      > No mention of Windows Indeed. That description should be fixed. One click away there is a Windows build: https://github.com/oracle/graal/releases https://github.com/oracle/graal/releases
nullwasamistake 7y ago
They're still keeping performance optimizations out of CE (free) version. Unheard of for a language runtime and quite crappy

50 points by fniephaus 7y ago

singularity2001 7y ago

can it be run in wasm and output native code (instead of teavm bytecode)?

tom_mellior 7y ago
The GraalVM compiler emits native code. It consumes JVM bytecode, or intermediate representations of other programming languages implemented using the Truffle framework.
pron 7y ago
I assume that a WASM backend could be created for Graal Native Image, so that it could compile Java byteocde to WASM ahead of time, but I wonder what benefits that would have over compiling bytecode to JS (as TeaVM does).
- singularity2001 7y ago
  There is now a pure wasm version of TeaVM. My idea was that graal could run in wasm and compile to wasm, the (only) benefits would be faster and smaller code.
  - pron 7y ago
    I'm not sure it would be either. JS has a good JIT that Java code can significantly benefit from (much more than, say, C) -- WASM doesn't, so compiling to JS could actually be faster; JS also has a GC and WASM doesn't, which means that the image must contain a GC, making it larger, not smaller. Either way, it's speculation, but I don't think it's obvious that compiling Java bytecode to WASM is preferable to compiling it to JS, but maybe the TeaVM maintainers can share their experience.

pragmaticlurker 7y ago

but still no Windows support for native image, plus no position independent code on *nix platforms

grashalm 7y ago
This is about using native-image for the Graal compiler when used as a JIT in HotSpot. There are Windows builds for this available here[1]. Not sure what you mean by position independent code in the context of libgraal. But I don't think it is relevant. [1] https://www.graalvm.org/downloads/ https://www.graalvm.org/downloads/
- pjmlp 7y ago
  > We provide pre-built binaries for GraalVM CE for Linux and Mac OS X on x86 64-bit systems. No mention of Windows
  - grashalm 7y ago
    > No mention of Windows Indeed. That description should be fixed. One click away there is a Windows build: https://github.com/oracle/graal/releases https://github.com/oracle/graal/releases

nullwasamistake 7y ago

They're still keeping performance optimizations out of CE (free) version. Unheard of for a language runtime and quite crappy