; LLVM IR from caryll/otfcc :: lib/support/sha1 (sha1)

; 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"

%struct.SHA1_CTX = type { [64 x i8], i32, i64, [5 x i32], [4 x i32] }

; Function Attrs: nounwind uwtable
declare dso_local void @sha1_transform(ptr noundef, 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
define dso_local void @sha1_update(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 0, ptr %7, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %44, %3
  %9 = load i64, ptr %7, align 8, !tbaa !9
  %10 = load i64, ptr %6, align 8, !tbaa !9
  %11 = icmp ult i64 %9, %10
  br i1 %11, label %12, label %47

12:                                               ; preds = %8
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = getelementptr inbounds i8, ptr %13, i64 %14
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.SHA1_CTX, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.SHA1_CTX, ptr %19, i32 0, i32 1
  %21 = load i32, ptr %20, align 8, !tbaa !12
  %22 = zext i32 %21 to i64
  %23 = getelementptr inbounds [64 x i8], ptr %18, i64 0, i64 %22
  store i8 %16, ptr %23, align 1, !tbaa !11
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.SHA1_CTX, ptr %24, i32 0, i32 1
  %26 = load i32, ptr %25, align 8, !tbaa !12
  %27 = add i32 %26, 1
  store i32 %27, ptr %25, align 8, !tbaa !12
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.SHA1_CTX, ptr %28, i32 0, i32 1
  %30 = load i32, ptr %29, align 8, !tbaa !12
  %31 = icmp eq i32 %30, 64
  br i1 %31, label %32, label %43

32:                                               ; preds = %12
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.SHA1_CTX, ptr %34, i32 0, i32 0
  %36 = getelementptr inbounds [64 x i8], ptr %35, i64 0, i64 0
  call void @sha1_transform(ptr noundef %33, ptr noundef %36)
  %37 = load ptr, ptr %4, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.SHA1_CTX, ptr %37, i32 0, i32 2
  %39 = load i64, ptr %38, align 8, !tbaa !16
  %40 = add i64 %39, 512
  store i64 %40, ptr %38, align 8, !tbaa !16
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.SHA1_CTX, ptr %41, i32 0, i32 1
  store i32 0, ptr %42, align 8, !tbaa !12
  br label %43

43:                                               ; preds = %32, %12
  br label %44

44:                                               ; preds = %43
  %45 = load i64, ptr %7, align 8, !tbaa !9
  %46 = add i64 %45, 1
  store i64 %46, ptr %7, align 8, !tbaa !9
  br label %8, !llvm.loop !17

47:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #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 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !14, i64 64}
!13 = !{!"", !7, i64 0, !14, i64 64, !15, i64 72, !7, i64 80, !7, i64 100}
!14 = !{!"int", !7, i64 0}
!15 = !{!"long long", !7, i64 0}
!16 = !{!13, !15, i64 72}
!17 = distinct !{!17, !18}
!18 = !{!"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: nounwind uwtable
declare dso_local void @sha1_transform(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @sha1_update(ptr noundef %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = getelementptr inbounds i8, ptr %0, i64 64
  %5 = getelementptr inbounds i8, ptr %0, i64 72
  %.pre = load i32, ptr %4, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %.lr.ph, %18
  %7 = phi i32 [ %.pre, %.lr.ph ], [ %19, %18 ]
  %.012 = phi i64 [ 0, %.lr.ph ], [ %20, %18 ]
  %8 = getelementptr inbounds i8, ptr %1, i64 %.012
  %9 = load i8, ptr %8, align 1, !tbaa !11
  %10 = zext i32 %7 to i64
  %11 = getelementptr inbounds [64 x i8], ptr %0, i64 0, i64 %10
  store i8 %9, ptr %11, align 1, !tbaa !11
  %12 = load i32, ptr %4, align 8, !tbaa !5
  %13 = add i32 %12, 1
  store i32 %13, ptr %4, align 8, !tbaa !5
  %14 = icmp eq i32 %13, 64
  br i1 %14, label %15, label %18

15:                                               ; preds = %6
  tail call void @sha1_transform(ptr noundef nonnull %0, ptr noundef nonnull %0)
  %16 = load i64, ptr %5, align 8, !tbaa !12
  %17 = add i64 %16, 512
  store i64 %17, ptr %5, align 8, !tbaa !12
  store i32 0, ptr %4, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %6, %15
  %19 = phi i32 [ %13, %6 ], [ 0, %15 ]
  %20 = add nuw i64 %.012, 1
  %exitcond.not = icmp eq i64 %20, %2
  br i1 %exitcond.not, label %._crit_edge, label %6, !llvm.loop !13

._crit_edge:                                      ; preds = %18, %3
  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" }

!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, !9, i64 64}
!6 = !{!"", !7, i64 0, !9, i64 64, !10, i64 72, !7, i64 80, !7, i64 100}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!"long long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!6, !10, i64 72}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass