Change Status flags in EFLAGS(ZF)
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- Dominant language
- Rust
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Description
Is it possible to change ZF flag using asm!?
For intrinsics _mm512_kortestc:
Description
Performs bitwise OR between k1 and k2, storing the result in dst. CF flag is set if dst consists of all 1's.
Operation
dst[15:0] := k1[15:0] | k2[15:0]
IF PopCount(dst[15:0]) == 16
SetCF()
FI
Is this doable in the nightly version?
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by examining the asm! entry point and the _mm512_kortestc intrinsic described in the issue. Check current nightly support for changing status flags and determine whether the requested ZF behavior is supported; done means answering that feasibility question with the relevant limitation or support status.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- backend
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100