Removed the check in c.fldsp against ft0 destination (!395) · Merge requests · OpenHW Group / backup-20241120 / cva6

Eclipse Webmaster requested to merge github/fork/xushengj/c_fld_ft0_fix into master Mar 13, 2020

Created by: xushengj

If a compressed instruction fld rd, xxx(sp) use ft0 as rd, currently Ariane will generate an illegal instruction fault. However, the restriction that destination shouldn't be zero should only be applied to GPR; floating point register ft0 is not hard-wired to zero and can be used as destination.

This pull request removed the check in compressed decoder that causes this issue.

Removed the check in c.fldsp against ft0 destination

Merge request reports