proposal: Enabling softfloat for RISCV target

[kevaundray]

Proposal Details

Proposal

Although the compiler is supposed to support RVA20U64, it is possible to use d=softfloat to remove pure go floating operations. This does not transform the assembly generated floating point code.

Could we have the same treatment for RISCV as it is for mips for targets that do not have a FPU?

Related issue:

#32760

[gabyhelp]

Related Issues

• change GORISCV64=rva20u64 to include compressed instructions #71105

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