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X s< 0 || X == 1 implies X != 0 #77

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dtcxzyw opened this issue Dec 1, 2024 · 0 comments

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missed-optimization

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dtcxzyw commented Dec 1, 2024

https://alive2.llvm.org/ce/z/EmsjmG

define noundef i1 @src57(i32 noundef %0) local_unnamed_addr #0 {
entry:
  %1 = icmp slt i32 %0, 0
  %2 = icmp eq i32 %0, 1
  %3 = or i1 %1, %2
  tail call void @llvm.assume(i1 %3)
  %4 = icmp eq i32 %0, 0
  ret i1 %4
}

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
define noundef i1 @tgt57(i32 %0) local_unnamed_addr #2 {
entry:
  ret i1 false
}

tests/cmake/optimized/archive_read_support_format_rar5.c.ll

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dtcxzyw added the missed-optimization label

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