Bug 282900 – [RISCV] Fix instruction requires the following: 'D'/'F'/'M'

• Status: RESOLVED
• Resolution: FIXED
• Component: JavaScriptCore

[MingZhu Yan]

Meet this error during compiling on my riscv64gc board.

The following is not complete information; I only captured a part of it. The complete error also includes F and M extensions

```txt
1d.1ld: error: ld-temp.o <inline asm>:63:1: instruction requires the following: 'D' (Double-Precision Floating-Point)
fsd f18, ((4 * 8) + (32 * 8) + (1 * 8) + (18 * 8))(sp)
^

1d.1ld: error: ld-temp.o <inline asm>:64:1: instruction requires the following: 'D' (Double-Precision Floating-Point)
fsd f19, ((4 * 8) + (32 * 8) + (1 * 8) + (19 * 8))(sp)
^

1d.1ld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)

clang: error: linker command failed with exit code 1 (use -v to see invocation)

ninja: build stopped: subcommand failed.
```

I've try to add `-march=riscv64gc -cpu=lp64d` to everywhere i can try, but this error keep going on. but finally I found that this should be a llvm bug.

More related infomations are here:

- https://github.com/rust-lang/rust/issues/80608
- https://github.com/llvm/llvm-project/issues/61991
- https://github.com/llvm/llvm-project/pull/97685/files

[MingZhu Yan]

Pull request: https://github.com/WebKit/WebKit/pull/36461

[Radar WebKit Bug Importer]

<rdar://problem/140076841>

[EWS]

Committed 286815@main (fff4bd89ff20): <https://commits.webkit.org/286815@main>

Reviewed commits have been landed. Closing PR #36461 and removing active labels.