; LLVM IR from square/subzero :: core/external-crypto/aes (aesaux)

; 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"

@rand8.r4 = external hidden global i64, align 8
@rand8.r_cnt = external hidden global i64, align 8

; Function Attrs: nounwind uwtable
declare dso_local i32 @rand32() #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @rand8() #0 {
  %1 = load i64, ptr @rand8.r_cnt, align 8, !tbaa !5
  %2 = icmp eq i64 %1, 4
  br i1 %2, label %3, label %6

3:                                                ; preds = %0
  %4 = call i32 @rand32()
  %5 = zext i32 %4 to i64
  store i64 %5, ptr @rand8.r4, align 8, !tbaa !5
  store i64 0, ptr @rand8.r_cnt, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %3, %0
  %7 = load i64, ptr @rand8.r4, align 8, !tbaa !5
  %8 = load i64, ptr @rand8.r_cnt, align 8, !tbaa !5
  %9 = add i64 %8, 1
  store i64 %9, ptr @rand8.r_cnt, align 8, !tbaa !5
  %10 = mul i64 8, %8
  %11 = lshr i64 %7, %10
  %12 = trunc i64 %11 to i8
  ret i8 %12
}

attributes #0 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/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"

@rand8.r4 = external hidden local_unnamed_addr global i64, align 8
@rand8.r_cnt = external hidden local_unnamed_addr global i64, align 8

; Function Attrs: nounwind uwtable
declare dso_local i32 @rand32() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @rand8() local_unnamed_addr #0 {
  %1 = load i64, ptr @rand8.r_cnt, align 8, !tbaa !5
  %2 = icmp eq i64 %1, 4
  br i1 %2, label %3, label %._crit_edge

._crit_edge:                                      ; preds = %0
  %.pre = load i64, ptr @rand8.r4, align 8, !tbaa !5
  br label %6

3:                                                ; preds = %0
  %4 = tail call i32 @rand32()
  %5 = zext i32 %4 to i64
  store i64 %5, ptr @rand8.r4, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %._crit_edge, %3
  %7 = phi i64 [ %1, %._crit_edge ], [ 0, %3 ]
  %8 = phi i64 [ %.pre, %._crit_edge ], [ %5, %3 ]
  %9 = add i64 %7, 1
  store i64 %9, ptr @rand8.r_cnt, align 8, !tbaa !5
  %10 = shl i64 %7, 3
  %11 = lshr i64 %8, %10
  %12 = trunc i64 %11 to i8
  ret i8 %12
}

attributes #0 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: DSEPass,GVNPass,GlobalOptPass,InstCombinePass,TailCallElimPass