[PATCH] D158068: [DAG] FoldSetCC - add missing icmp(X,undef) -> isTrueWhenEqual case

Wed Aug 16 03:36:25 PDT 2023

nikic added a comment.

The transform looks fine to me, but a lot of these test cases need updates to remove undef (those that are bad reductions rather than intentional tests of undef).

================
Comment at: llvm/test/CodeGen/AMDGPU/swdev373493.ll:57
 bb:
   switch i32 undef, label %bb9 [
     i32 3, label %bb8
----------------
Don't switch on undef...

================
Comment at: llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll:423
   %tmp12 = icmp eq i32 %tmp11, 512
   switch i32 undef, label %bb13 [
     i32 117, label %bb62
----------------
Don't switch on undef...

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158068/new/

https://reviews.llvm.org/D158068