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| author | Jonathan 'theJPster' Pallant <github@thejpster.org.uk> | 2024-10-11 13:55:17 +0200 |
|---|---|---|
| committer | Jonathan 'theJPster' Pallant <github@thejpster.org.uk> | 2024-10-11 13:55:17 +0200 |
| commit | 5cc1c7b594d97245d2feffbe14478b15f4e48db8 (patch) | |
| tree | 64d7f7a33a0c9cdadfae4c4844e8831f078f65f6 /src/doc/rustc | |
| parent | b52941dec76656f9c80c5f67e5326fafd256b9e0 (diff) | |
| download | rust-5cc1c7b594d97245d2feffbe14478b15f4e48db8.tar.gz rust-5cc1c7b594d97245d2feffbe14478b15f4e48db8.zip | |
Note Integer MVE hard-float use-case in arm platform docs.
Diffstat (limited to 'src/doc/rustc')
| -rw-r--r-- | src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md b/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md index 40b19364f61..82fdc5b21cf 100644 --- a/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md +++ b/src/doc/rustc/src/platform-support/thumbv8m.main-none-eabi.md @@ -74,6 +74,11 @@ to use these flags. | Cortex-M85 | DP | Yes | Int | `cortex-m85` | `-mve.fp` | | Cortex-M85 | DP | Yes | Int+Float | `cortex-m85` | None | +*Technically* you can use this hard-float ABI on a CPU which has no FPU but does +have Integer MVE, because MVE provides the same set of registers as the FPU +(including `s0` and `d0`). The particular set of flags that might enable this +unusual scenario are currently not recorded here. + <div class="warning"> Never use the `-fpregs` *target-feature* with the `thumbv8m.main-none-eabihf` |