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[GlobalIsel] Constant Folding #86406

Open tschuett opened 5 months ago

tschuett commented 5 months ago
tschuett commented 5 months ago

We don't fold floating point unary ops.

llvmbot commented 5 months ago

Hi!

This issue may be a good introductory issue for people new to working on LLVM. If you would like to work on this issue, your first steps are:

  1. Check that no other contributor has already been assigned to this issue. If you believe that no one is actually working on it despite an assignment, ping the person. After one week without a response, the assignee may be changed.
  2. In the comments of this issue, request for it to be assigned to you, or just create a pull request after following the steps below. Mention this issue in the description of the pull request.
  3. Fix the issue locally.
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llvmbot commented 5 months ago

@llvm/issue-subscribers-good-first-issue

Author: Thorsten Schütt (tschuett)

* ConstantFoldFBinOp has no support for G_FCEIL https://github.com/llvm/llvm-project/blob/3a63f737e29a2382c8ec26c0d360bd77c01a27a1/llvm/lib/CodeGen/GlobalISel/Utils.cpp#L713 * APFloat has no support for ceil. * We have no build vector constant folding for floats: https://github.com/llvm/llvm-project/blob/3a63f737e29a2382c8ec26c0d360bd77c01a27a1/llvm/test/CodeGen/AArch64/extract-vector-elt.ll#L729 and https://github.com/llvm/llvm-project/blob/39c8e87717fbc611b9e84f62edf656608ae52e5c/llvm/lib/CodeGen/GlobalISel/CSEMIRBuilder.cpp#L229
Poseydon42 commented 5 months ago

I'd like to work on this issue.

Unique-Usman commented 5 months ago

@tschuett, I will like to work on this issue, if it is available. Thank you