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| author | Guido van Rossum <guido@python.org> | 2024-05-01 01:26:34 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-05-01 01:26:34 (GMT) |
| commit | 7d83f7bcc484145596bae1ff015fed0762da345d (patch) | |
| tree | f2f3cbb0cefaa920b319c77da00606fef1db48aa /Tools/jit | |
| parent | 9c468e2c5dffb6fa9811fd16e70fa0463bdfce5f (diff) | |
| download | cpython-7d83f7bcc484145596bae1ff015fed0762da345d.zip cpython-7d83f7bcc484145596bae1ff015fed0762da345d.tar.gz cpython-7d83f7bcc484145596bae1ff015fed0762da345d.tar.bz2 | |
gh-118335: Configure Tier 2 interpreter at build time (#118339)
The code for Tier 2 is now only compiled when configured
with `--enable-experimental-jit[=yes|interpreter]`.
We drop support for `PYTHON_UOPS` and -`Xuops`,
but you can disable the interpreter or JIT
at runtime by setting `PYTHON_JIT=0`.
You can also build it without enabling it by default
using `--enable-experimental-jit=yes-off`;
enable with `PYTHON_JIT=1`.
On Windows, the `build.bat` script supports
`--experimental-jit`, `--experimental-jit-off`,
`--experimental-interpreter`.
In the C code, `_Py_JIT` is defined as before
when the JIT is enabled; the new variable
`_Py_TIER2` is defined when the JIT *or* the
interpreter is enabled. It is actually a bitmask:
1: JIT; 2: default-off; 4: interpreter.
Diffstat (limited to 'Tools/jit')
| -rw-r--r-- | Tools/jit/README.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Tools/jit/README.md b/Tools/jit/README.md index 7b33f99..0f5aa9c 100644 --- a/Tools/jit/README.md +++ b/Tools/jit/README.md @@ -7,18 +7,18 @@ This version of CPython can be built with an experimental just-in-time compiler. The JIT compiler does not require end users to install any third-party dependencies, but part of it must be *built* using LLVM[^why-llvm]. You are *not* required to build the rest of CPython using LLVM, or even the same version of LLVM (in fact, this is uncommon). -LLVM version 16 is required. Both `clang` and `llvm-readobj` need to be installed and discoverable (version suffixes, like `clang-16`, are okay). It's highly recommended that you also have `llvm-objdump` available, since this allows the build script to dump human-readable assembly for the generated code. +LLVM version 18 is required. Both `clang` and `llvm-readobj` need to be installed and discoverable (version suffixes, like `clang-18`, are okay). It's highly recommended that you also have `llvm-objdump` available, since this allows the build script to dump human-readable assembly for the generated code. It's easy to install all of the required tools: ### Linux -Install LLVM 16 on Ubuntu/Debian: +Install LLVM 18 on Ubuntu/Debian: ```sh wget https://apt.llvm.org/llvm.sh chmod +x llvm.sh -sudo ./llvm.sh 16 +sudo ./llvm.sh 18 ``` ### macOS |