; LLVM IR from mackorone/mms :: old/v2/src/mouse/mackAlgoTwo/Heap.ll (ZN11mackAlgoTwo4Heap17getLeftChildIndexEh)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i8 @_ZN11mackAlgoTwo4Heap14getParentIndexEh(i8 noundef zeroext) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i8 @_ZN11mackAlgoTwo4Heap17getLeftChildIndexEh(i8 noundef zeroext %0) #0 align 2 {
  %2 = alloca i8, align 1
  %3 = alloca i8, align 1
  store i8 %0, ptr %3, align 1, !tbaa !5
  %4 = call noundef zeroext i8 @_ZN11mackAlgoTwo4Heap14getParentIndexEh(i8 noundef zeroext 126)
  %5 = zext i8 %4 to i32
  %6 = load i8, ptr %3, align 1, !tbaa !5
  %7 = zext i8 %6 to i32
  %8 = icmp slt i32 %5, %7
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i8 -1, ptr %2, align 1
  br label %16

10:                                               ; preds = %1
  %11 = load i8, ptr %3, align 1, !tbaa !5
  %12 = zext i8 %11 to i32
  %13 = mul nsw i32 %12, 2
  %14 = add nsw i32 %13, 1
  %15 = trunc i32 %14 to i8
  store i8 %15, ptr %2, align 1
  br label %16

16:                                               ; preds = %10, %9
  %17 = load i8, ptr %2, align 1
  ret i8 %17
}

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i8 @_ZN11mackAlgoTwo4Heap14getParentIndexEh(i8 noundef zeroext) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i8 @_ZN11mackAlgoTwo4Heap17getLeftChildIndexEh(i8 noundef zeroext %0) local_unnamed_addr #0 align 2 {
  %2 = tail call noundef zeroext i8 @_ZN11mackAlgoTwo4Heap14getParentIndexEh(i8 noundef zeroext 126)
  %3 = icmp ult i8 %2, %0
  %4 = shl i8 %0, 1
  %5 = or disjoint i8 %4, 1
  %.0 = select i1 %3, i8 -1, i8 %5
  ret i8 %.0
}

attributes #0 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass