; LLVM IR from rweather/lightweight-crypto :: src/genavr/algorithm_subterranean.ll (Z29test_subterranean_permutationR4Code)

; 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"

@_ZZ29test_subterranean_permutationR4CodeE5input = external hidden constant [33 x i8], align 16
@_ZZ29test_subterranean_permutationR4CodeE6output = external hidden constant [33 x i8], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z29test_subterranean_permutationR4Code(ptr noundef nonnull align 8 dereferenceable(200) %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca [33 x i8], align 16
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 33, ptr %3) #5
  %5 = getelementptr inbounds [33 x i8], ptr %3, i64 0, i64 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %5, ptr align 16 @_ZZ29test_subterranean_permutationR4CodeE5input, i64 33, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %18, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 8
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %21

10:                                               ; preds = %6
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds [33 x i8], ptr %3, i64 0, i64 0
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %11, ptr noundef %12, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %13 = getelementptr inbounds [33 x i8], ptr %3, i64 0, i64 0
  %14 = load i8, ptr %13, align 16, !tbaa !11
  %15 = zext i8 %14 to i32
  %16 = xor i32 %15, 2
  %17 = trunc i32 %16 to i8
  store i8 %17, ptr %13, align 16, !tbaa !11
  br label %18

18:                                               ; preds = %10
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !12

21:                                               ; preds = %9
  %22 = getelementptr inbounds [33 x i8], ptr %3, i64 0, i64 0
  %23 = call i32 @memcmp(ptr noundef @_ZZ29test_subterranean_permutationR4CodeE6output, ptr noundef %22, i64 noundef 33) #6
  %24 = icmp ne i32 %23, 0
  %25 = xor i1 %24, true
  call void @llvm.lifetime.end.p0(i64 33, ptr %3) #5
  ret i1 %25
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200), ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #3

; Function Attrs: nounwind willreturn memory(read)
declare i32 @memcmp(ptr noundef, ptr noundef, i64 noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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" }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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" }
attributes #4 = { nounwind willreturn memory(read) "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" }
attributes #5 = { nounwind }
attributes #6 = { nounwind willreturn memory(read) }

!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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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"

@_ZZ29test_subterranean_permutationR4CodeE5input = external hidden local_unnamed_addr constant [33 x i8], align 16
@_ZZ29test_subterranean_permutationR4CodeE6output = external hidden constant [33 x i8], align 16

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z29test_subterranean_permutationR4Code(ptr noundef nonnull align 8 dereferenceable(200) %0) local_unnamed_addr #1 {
  %2 = alloca [33 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 33, ptr nonnull %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(33) %2, ptr noundef nonnull align 16 dereferenceable(33) @_ZZ29test_subterranean_permutationR4CodeE5input, i64 33, i1 false)
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %3 = load i8, ptr %2, align 16, !tbaa !5
  %4 = xor i8 %3, 2
  store i8 %4, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %5 = load i8, ptr %2, align 16, !tbaa !5
  %6 = xor i8 %5, 2
  store i8 %6, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %7 = load i8, ptr %2, align 16, !tbaa !5
  %8 = xor i8 %7, 2
  store i8 %8, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %9 = load i8, ptr %2, align 16, !tbaa !5
  %10 = xor i8 %9, 2
  store i8 %10, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %11 = load i8, ptr %2, align 16, !tbaa !5
  %12 = xor i8 %11, 2
  store i8 %12, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %13 = load i8, ptr %2, align 16, !tbaa !5
  %14 = xor i8 %13, 2
  store i8 %14, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %15 = load i8, ptr %2, align 16, !tbaa !5
  %16 = xor i8 %15, 2
  store i8 %16, ptr %2, align 16, !tbaa !5
  call void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200) %0, ptr noundef nonnull %2, i32 noundef 33, i32 noundef 0, i32 noundef 0, i32 noundef 0, i32 noundef 0)
  %17 = load i8, ptr %2, align 16, !tbaa !5
  %18 = xor i8 %17, 2
  store i8 %18, ptr %2, align 16, !tbaa !5
  %bcmp = call i32 @bcmp(ptr noundef nonnull dereferenceable(33) @_ZZ29test_subterranean_permutationR4CodeE6output, ptr noundef nonnull dereferenceable(33) %2, i64 33)
  %.not = icmp eq i32 %bcmp, 0
  call void @llvm.lifetime.end.p0(i64 33, ptr nonnull %2) #5
  ret i1 %.not
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare void @_ZN4Code16exec_permutationEPvjjjjj(ptr noundef nonnull align 8 dereferenceable(200), ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind willreturn memory(argmem: read)
declare i32 @bcmp(ptr nocapture, ptr nocapture, i64) local_unnamed_addr #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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" }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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" }
attributes #4 = { nofree nounwind willreturn memory(argmem: read) }
attributes #5 = { nounwind }

!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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass