; LLVM IR from guanzhi/GmSSL :: src (sm2_z256)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [62 x i8], align 1
@__FUNCTION__.sm2_z256_rand_range = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_z256_rand_range(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 100, ptr %6, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %25, %2
  %9 = load i32, ptr %6, align 4, !tbaa !9
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %12, label %11

11:                                               ; preds = %8
  store i32 0, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = call i32 @rand_bytes(ptr noundef %13, i64 noundef 32)
  %15 = icmp ne i32 %14, 1
  br i1 %15, label %16, label %22

16:                                               ; preds = %12
  br label %17

17:                                               ; preds = %16
  %18 = load ptr, ptr @stderr, align 8, !tbaa !5
  %19 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 102, ptr noundef @__FUNCTION__.sm2_z256_rand_range) #4
  br label %20

20:                                               ; preds = %17
  br label %21

21:                                               ; preds = %20
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

22:                                               ; preds = %12
  %23 = load i32, ptr %6, align 4, !tbaa !9
  %24 = add i32 %23, -1
  store i32 %24, ptr %6, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %22
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = call i32 @sm2_z256_cmp(ptr noundef %26, ptr noundef %27)
  %29 = icmp sge i32 %28, 0
  br i1 %29, label %8, label %30, !llvm.loop !11

30:                                               ; preds = %25
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

31:                                               ; preds = %30, %21, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  %32 = load i32, ptr %3, align 4
  ret i32 %32
}

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

declare i32 @rand_bytes(ptr noundef, i64 noundef) #2

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #3

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_z256_cmp(ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { nounwind "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 }

!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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [62 x i8], align 1
@__FUNCTION__.sm2_z256_rand_range = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm2_z256_rand_range(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  br label %3

3:                                                ; preds = %9, %2
  %.0 = phi i32 [ 100, %2 ], [ %10, %9 ]
  %.not = icmp eq i32 %.0, 0
  br i1 %.not, label %.loopexit, label %4

4:                                                ; preds = %3
  %5 = tail call i32 @rand_bytes(ptr noundef %0, i64 noundef 32) #3
  %.not6 = icmp eq i32 %5, 1
  br i1 %.not6, label %9, label %6

6:                                                ; preds = %4
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  %8 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %7, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 102, ptr noundef nonnull @__FUNCTION__.sm2_z256_rand_range) #4
  br label %.loopexit

9:                                                ; preds = %4
  %10 = add nsw i32 %.0, -1
  %11 = tail call i32 @sm2_z256_cmp(ptr noundef %0, ptr noundef %1)
  %12 = icmp sgt i32 %11, -1
  br i1 %12, label %3, label %.loopexit, !llvm.loop !9

.loopexit:                                        ; preds = %9, %3, %6
  %.05 = phi i32 [ -1, %6 ], [ 1, %9 ], [ 0, %3 ]
  ret i32 %.05
}

declare i32 @rand_bytes(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_z256_cmp(ptr noundef, ptr noundef) local_unnamed_addr #0

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 = { "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 = { nofree nounwind "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 #3 = { nounwind }
attributes #4 = { cold 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass