; LLVM IR from guanzhi/GmSSL :: src (hex)

; 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: 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: nounwind uwtable
define dso_local void @gmssl_memxor(ptr noundef %0, ptr noundef %1, ptr noundef %2, i64 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store i64 %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %13, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %14, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %15, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #2
  store i64 0, ptr %12, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %36, %4
  %17 = load i64, ptr %12, align 8, !tbaa !9
  %18 = load i64, ptr %8, align 8, !tbaa !9
  %19 = icmp ult i64 %17, %18
  br i1 %19, label %20, label %39

20:                                               ; preds = %16
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = load i64, ptr %12, align 8, !tbaa !9
  %23 = getelementptr inbounds i8, ptr %21, i64 %22
  %24 = load i8, ptr %23, align 1, !tbaa !11
  %25 = zext i8 %24 to i32
  %26 = load ptr, ptr %11, align 8, !tbaa !5
  %27 = load i64, ptr %12, align 8, !tbaa !9
  %28 = getelementptr inbounds i8, ptr %26, i64 %27
  %29 = load i8, ptr %28, align 1, !tbaa !11
  %30 = zext i8 %29 to i32
  %31 = xor i32 %25, %30
  %32 = trunc i32 %31 to i8
  %33 = load ptr, ptr %9, align 8, !tbaa !5
  %34 = load i64, ptr %12, align 8, !tbaa !9
  %35 = getelementptr inbounds i8, ptr %33, i64 %34
  store i8 %32, ptr %35, align 1, !tbaa !11
  br label %36

36:                                               ; preds = %20
  %37 = load i64, ptr %12, align 8, !tbaa !9
  %38 = add i64 %37, 1
  store i64 %38, ptr %12, align 8, !tbaa !9
  br label %16, !llvm.loop !12

39:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"long", !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"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @gmssl_memxor(ptr nocapture noundef writeonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef readonly %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = ptrtoint ptr %2 to i64
  %6 = ptrtoint ptr %1 to i64
  %7 = ptrtoint ptr %0 to i64
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %iter.check

iter.check:                                       ; preds = %4
  %min.iters.check = icmp ult i64 %3, 8
  br i1 %min.iters.check, label %.lr.ph.preheader, label %vector.memcheck

vector.memcheck:                                  ; preds = %iter.check
  %8 = sub i64 %7, %6
  %diff.check = icmp ult i64 %8, 32
  %9 = sub i64 %7, %5
  %diff.check12 = icmp ult i64 %9, 32
  %conflict.rdx = or i1 %diff.check, %diff.check12
  br i1 %conflict.rdx, label %.lr.ph.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %vector.memcheck
  %min.iters.check13 = icmp ult i64 %3, 32
  br i1 %min.iters.check13, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %3, -32
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %10 = getelementptr inbounds i8, ptr %1, i64 %index
  %11 = getelementptr inbounds i8, ptr %10, i64 16
  %wide.load = load <16 x i8>, ptr %10, align 1, !tbaa !5
  %wide.load14 = load <16 x i8>, ptr %11, align 1, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %2, i64 %index
  %13 = getelementptr inbounds i8, ptr %12, i64 16
  %wide.load15 = load <16 x i8>, ptr %12, align 1, !tbaa !5
  %wide.load16 = load <16 x i8>, ptr %13, align 1, !tbaa !5
  %14 = xor <16 x i8> %wide.load15, %wide.load
  %15 = xor <16 x i8> %wide.load16, %wide.load14
  %16 = getelementptr inbounds i8, ptr %0, i64 %index
  %17 = getelementptr inbounds i8, ptr %16, i64 16
  store <16 x i8> %14, ptr %16, align 1, !tbaa !5
  store <16 x i8> %15, ptr %17, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %18 = icmp eq i64 %index.next, %n.vec
  br i1 %18, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %3
  br i1 %cmp.n, label %._crit_edge, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %n.vec.remaining = and i64 %3, 24
  %min.epilog.iters.check = icmp eq i64 %n.vec.remaining, 0
  br i1 %min.epilog.iters.check, label %.lr.ph.preheader, label %vec.epilog.ph

vec.epilog.ph:                                    ; preds = %vector.main.loop.iter.check, %vec.epilog.iter.check
  %vec.epilog.resume.val = phi i64 [ %n.vec, %vec.epilog.iter.check ], [ 0, %vector.main.loop.iter.check ]
  %n.vec18 = and i64 %3, -8
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index19 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next22, %vec.epilog.vector.body ]
  %19 = getelementptr inbounds i8, ptr %1, i64 %index19
  %wide.load20 = load <8 x i8>, ptr %19, align 1, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %2, i64 %index19
  %wide.load21 = load <8 x i8>, ptr %20, align 1, !tbaa !5
  %21 = xor <8 x i8> %wide.load21, %wide.load20
  %22 = getelementptr inbounds i8, ptr %0, i64 %index19
  store <8 x i8> %21, ptr %22, align 1, !tbaa !5
  %index.next22 = add nuw i64 %index19, 8
  %23 = icmp eq i64 %index.next22, %n.vec18
  br i1 %23, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !12

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n23 = icmp eq i64 %n.vec18, %3
  br i1 %cmp.n23, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %vec.epilog.middle.block, %vector.memcheck, %iter.check, %vec.epilog.iter.check
  %.011.ph = phi i64 [ 0, %iter.check ], [ 0, %vector.memcheck ], [ %n.vec, %vec.epilog.iter.check ], [ %n.vec18, %vec.epilog.middle.block ]
  %xtraiter = and i64 %3, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %.011.prol = phi i64 [ %30, %.lr.ph.prol ], [ %.011.ph, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %24 = getelementptr inbounds i8, ptr %1, i64 %.011.prol
  %25 = load i8, ptr %24, align 1, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %2, i64 %.011.prol
  %27 = load i8, ptr %26, align 1, !tbaa !5
  %28 = xor i8 %27, %25
  %29 = getelementptr inbounds i8, ptr %0, i64 %.011.prol
  store i8 %28, ptr %29, align 1, !tbaa !5
  %30 = add nuw i64 %.011.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !13

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %.011.unr = phi i64 [ %.011.ph, %.lr.ph.preheader ], [ %30, %.lr.ph.prol ]
  %31 = sub i64 %.011.ph, %3
  %32 = icmp ugt i64 %31, -4
  br i1 %32, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.011 = phi i64 [ %60, %.lr.ph ], [ %.011.unr, %.lr.ph.prol.loopexit ]
  %33 = getelementptr inbounds i8, ptr %1, i64 %.011
  %34 = load i8, ptr %33, align 1, !tbaa !5
  %35 = getelementptr inbounds i8, ptr %2, i64 %.011
  %36 = load i8, ptr %35, align 1, !tbaa !5
  %37 = xor i8 %36, %34
  %38 = getelementptr inbounds i8, ptr %0, i64 %.011
  store i8 %37, ptr %38, align 1, !tbaa !5
  %39 = add nuw i64 %.011, 1
  %40 = getelementptr inbounds i8, ptr %1, i64 %39
  %41 = load i8, ptr %40, align 1, !tbaa !5
  %42 = getelementptr inbounds i8, ptr %2, i64 %39
  %43 = load i8, ptr %42, align 1, !tbaa !5
  %44 = xor i8 %43, %41
  %45 = getelementptr inbounds i8, ptr %0, i64 %39
  store i8 %44, ptr %45, align 1, !tbaa !5
  %46 = add nuw i64 %.011, 2
  %47 = getelementptr inbounds i8, ptr %1, i64 %46
  %48 = load i8, ptr %47, align 1, !tbaa !5
  %49 = getelementptr inbounds i8, ptr %2, i64 %46
  %50 = load i8, ptr %49, align 1, !tbaa !5
  %51 = xor i8 %50, %48
  %52 = getelementptr inbounds i8, ptr %0, i64 %46
  store i8 %51, ptr %52, align 1, !tbaa !5
  %53 = add nuw i64 %.011, 3
  %54 = getelementptr inbounds i8, ptr %1, i64 %53
  %55 = load i8, ptr %54, align 1, !tbaa !5
  %56 = getelementptr inbounds i8, ptr %2, i64 %53
  %57 = load i8, ptr %56, align 1, !tbaa !5
  %58 = xor i8 %57, %55
  %59 = getelementptr inbounds i8, ptr %0, i64 %53
  store i8 %58, ptr %59, align 1, !tbaa !5
  %60 = add nuw i64 %.011, 4
  %exitcond.not.3 = icmp eq i64 %60, %3
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %vec.epilog.middle.block, %4
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) 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/C++ TBAA"}
!8 = distinct !{!8, !9, !10, !11}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!"llvm.loop.isvectorized", i32 1}
!11 = !{!"llvm.loop.unroll.runtime.disable"}
!12 = distinct !{!12, !9, !10, !11}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.unroll.disable"}
!15 = distinct !{!15, !9, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass