; LLVM IR from microsoft/vOW4SIKE_on_HW :: SIKE_sw/src/sha3 (fips202)

; 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: nounwind uwtable
declare dso_local void @KeccakF1600_StatePermute(ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare hidden void @keccak_absorb(ptr noundef, i32 noundef, ptr noundef, i64 noundef, i8 noundef zeroext) #0

; Function Attrs: nounwind uwtable
define dso_local void @cshake128_simple_absorb(ptr noundef %0, i16 noundef zeroext %1, ptr noundef %2, i64 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca i16, align 2
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i16 %1, ptr %6, align 2, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  store i64 %3, ptr %8, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %11, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !13
  br label %12

12:                                               ; preds = %20, %4
  %13 = load i32, ptr %10, align 4, !tbaa !13
  %14 = icmp ult i32 %13, 25
  br i1 %14, label %15, label %23

15:                                               ; preds = %12
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load i32, ptr %10, align 4, !tbaa !13
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds i64, ptr %16, i64 %18
  store i64 0, ptr %19, align 8, !tbaa !15
  br label %20

20:                                               ; preds = %15
  %21 = load i32, ptr %10, align 4, !tbaa !13
  %22 = add i32 %21, 1
  store i32 %22, ptr %10, align 4, !tbaa !13
  br label %12, !llvm.loop !17

23:                                               ; preds = %12
  %24 = load ptr, ptr %9, align 8, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %24, i64 0
  store i8 1, ptr %25, align 1, !tbaa !19
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %26, i64 1
  store i8 -88, ptr %27, align 1, !tbaa !19
  %28 = load ptr, ptr %9, align 8, !tbaa !5
  %29 = getelementptr inbounds i8, ptr %28, i64 2
  store i8 1, ptr %29, align 1, !tbaa !19
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  %31 = getelementptr inbounds i8, ptr %30, i64 3
  store i8 0, ptr %31, align 1, !tbaa !19
  %32 = load ptr, ptr %9, align 8, !tbaa !5
  %33 = getelementptr inbounds i8, ptr %32, i64 4
  store i8 1, ptr %33, align 1, !tbaa !19
  %34 = load ptr, ptr %9, align 8, !tbaa !5
  %35 = getelementptr inbounds i8, ptr %34, i64 5
  store i8 16, ptr %35, align 1, !tbaa !19
  %36 = load i16, ptr %6, align 2, !tbaa !9
  %37 = zext i16 %36 to i32
  %38 = and i32 %37, 255
  %39 = trunc i32 %38 to i8
  %40 = load ptr, ptr %9, align 8, !tbaa !5
  %41 = getelementptr inbounds i8, ptr %40, i64 6
  store i8 %39, ptr %41, align 1, !tbaa !19
  %42 = load i16, ptr %6, align 2, !tbaa !9
  %43 = zext i16 %42 to i32
  %44 = ashr i32 %43, 8
  %45 = trunc i32 %44 to i8
  %46 = load ptr, ptr %9, align 8, !tbaa !5
  %47 = getelementptr inbounds i8, ptr %46, i64 7
  store i8 %45, ptr %47, align 1, !tbaa !19
  %48 = load ptr, ptr %5, align 8, !tbaa !5
  call void @KeccakF1600_StatePermute(ptr noundef %48)
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = load ptr, ptr %7, align 8, !tbaa !5
  %51 = load i64, ptr %8, align 8, !tbaa !11
  call void @keccak_absorb(ptr noundef %49, i32 noundef 168, ptr noundef %50, i64 noundef %51, i8 noundef zeroext 4)
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret void
}

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!7, !7, i64 0}


; 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: nounwind uwtable
declare dso_local void @KeccakF1600_StatePermute(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden void @keccak_absorb(ptr noundef, i32 noundef, ptr noundef, i64 noundef, i8 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @cshake128_simple_absorb(ptr noundef %0, i16 noundef zeroext %1, ptr noundef %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(200) %5, i8 0, i64 192, i1 false), !tbaa !5
  store <4 x i8> <i8 1, i8 -88, i8 1, i8 0>, ptr %0, align 1, !tbaa !9
  %6 = getelementptr inbounds i8, ptr %0, i64 4
  store i8 1, ptr %6, align 1, !tbaa !9
  %7 = getelementptr inbounds i8, ptr %0, i64 5
  store i8 16, ptr %7, align 1, !tbaa !9
  %8 = trunc i16 %1 to i8
  %9 = getelementptr inbounds i8, ptr %0, i64 6
  store i8 %8, ptr %9, align 1, !tbaa !9
  %10 = lshr i16 %1, 8
  %11 = trunc nuw i16 %10 to i8
  %12 = getelementptr inbounds i8, ptr %0, i64 7
  store i8 %11, ptr %12, align 1, !tbaa !9
  tail call void @KeccakF1600_StatePermute(ptr noundef nonnull %0)
  tail call void @keccak_absorb(ptr noundef nonnull %0, i32 noundef 168, ptr noundef %2, i64 noundef %3, i8 noundef zeroext 4)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

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" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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"}
!9 = !{!7, !7, i64 0}


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