; LLVM IR from ARMmbed/mbed-crypto :: library (ecp)

; 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.mbedtls_ecp_curve_info = type { i32, i16, i16, ptr }

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

7:                                                ; preds = %23, %1
  %8 = load ptr, ptr %4, align 8, !tbaa !9
  %9 = getelementptr inbounds %struct.mbedtls_ecp_curve_info, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !11
  %11 = icmp ne i32 %10, 0
  br i1 %11, label %12, label %26

12:                                               ; preds = %7
  %13 = load ptr, ptr %4, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.mbedtls_ecp_curve_info, ptr %13, i32 0, i32 1
  %15 = load i16, ptr %14, align 4, !tbaa !14
  %16 = zext i16 %15 to i32
  %17 = load i16, ptr %3, align 2, !tbaa !5
  %18 = zext i16 %17 to i32
  %19 = icmp eq i32 %16, %18
  br i1 %19, label %20, label %22

20:                                               ; preds = %12
  %21 = load ptr, ptr %4, align 8, !tbaa !9
  store ptr %21, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %27

22:                                               ; preds = %12
  br label %23

23:                                               ; preds = %22
  %24 = load ptr, ptr %4, align 8, !tbaa !9
  %25 = getelementptr inbounds %struct.mbedtls_ecp_curve_info, ptr %24, i32 1
  store ptr %25, ptr %4, align 8, !tbaa !9
  br label %7, !llvm.loop !15

26:                                               ; preds = %7
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %27

27:                                               ; preds = %26, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %28 = load ptr, ptr %2, align 8
  ret ptr %28
}

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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"mbedtls_ecp_curve_info", !13, i64 0, !6, i64 4, !6, i64 6, !10, i64 8}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !6, i64 4}
!15 = distinct !{!15, !16}
!16 = !{!"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 ptr @mbedtls_ecp_curve_list() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef ptr @mbedtls_ecp_curve_info_from_tls_id(i16 noundef zeroext %0) local_unnamed_addr #0 {
  %2 = tail call ptr @mbedtls_ecp_curve_list()
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %.not6 = icmp eq i32 %3, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %7
  %.07 = phi ptr [ %8, %7 ], [ %2, %1 ]
  %4 = getelementptr inbounds i8, ptr %.07, i64 4
  %5 = load i16, ptr %4, align 4, !tbaa !12
  %6 = icmp eq i16 %5, %0
  br i1 %6, label %._crit_edge, label %7

7:                                                ; preds = %.lr.ph
  %8 = getelementptr inbounds i8, ptr %.07, i64 16
  %9 = load i32, ptr %8, align 8, !tbaa !5
  %.not = icmp eq i32 %9, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %7, %1
  %.05 = phi ptr [ null, %1 ], [ null, %7 ], [ %.07, %.lr.ph ]
  ret ptr %.05
}

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, !7, i64 0}
!6 = !{!"mbedtls_ecp_curve_info", !7, i64 0, !10, i64 4, !10, i64 6, !11, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"short", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !10, i64 4}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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