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Update table for linker-plugin-lto docs #118827

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Dec 11, 2023
Merged

Update table for linker-plugin-lto docs #118827

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8 changes: 6 additions & 2 deletions src/doc/rustc/src/linker-plugin-lto.md
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Original file line number Diff line number Diff line change
Expand Up @@ -136,14 +136,15 @@ able to get around this problem by setting `-Clinker=lld-link` in RUSTFLAGS
```python
from collections import defaultdict
import subprocess
import sys

def minor_version(version):
return int(version.split('.')[1])

INSTALL_TOOLCHAIN = ["rustup", "toolchain", "install", "--profile", "minimal"]
subprocess.run(INSTALL_TOOLCHAIN + ["nightly"])

LOWER_BOUND = 65
LOWER_BOUND = 73
NIGHTLY_VERSION = minor_version(subprocess.run(
["rustc", "+nightly", "--version"],
capture_output=True,
Expand All @@ -159,6 +160,7 @@ def llvm_version(toolchain):
version_map = defaultdict(lambda: [])
for version in range(LOWER_BOUND, NIGHTLY_VERSION - 1):
toolchain = "1.{}.0".format(version)
print("Checking", toolchain, file=sys.stderr)
subprocess.run(
INSTALL_TOOLCHAIN + ["--no-self-update", toolchain],
capture_output=True)
Expand Down Expand Up @@ -196,6 +198,8 @@ The following table shows known good combinations of toolchain versions.
| 1.52 - 1.55 | 12 |
| 1.56 - 1.59 | 13 |
| 1.60 - 1.64 | 14 |
| 1.65 | 15 |
| 1.65 - 1.69 | 15 |
| 1.70 - 1.72 | 16 |
| 1.73 - 1.74 | 17 |

Note that the compatibility policy for this feature might change in the future.
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