2039492 - [riscv64] Make ABIKind::System FP calls conforming to psABI

Status: RESOLVED FIXED

(Core :: JavaScript Engine: JIT, task)

Description

[Rong Bao [:csmantle]]

RISC-V's ELF psABI specifies the following:

A real floating-point argument is passed in a floating-point argument register if [...] at least one floating-point argument register is available. Otherwise, it is passed according to the integer calling convention.
-- [^0]

However, we currently push all extra FP args onto the stack without considering the available GPRs[^1].

Comment 1

[Rong Bao [:csmantle]]

Attachment: Bug 2039492 - [riscv64] Make floating point callconv conforming to psABI. r=jandem!

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/d95a1a99e191
https://hg.mozilla.org/integration/autoland/rev/d9f46467546b
[riscv64] Make floating point callconv conforming to psABI. r=jandem

Comment 3

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/d9f46467546b