; LLVM IR from lfarcaro/ARINC653_ARMV7A_Z7000 :: ARINC653_ARMV7A_Z7000.sw/MEASURE/src/Algorithms (algorithm_fibcall1)

; 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"

@algorithm_fibcall1_Fnew = external dso_local global i32, align 4
@algorithm_fibcall1_Fold = external dso_local global i32, align 4
@algorithm_fibcall1_i = external dso_local global i32, align 4
@algorithm_fibcall1_temp = external dso_local global i32, align 4
@algorithm_fibcall1_ans = external dso_local global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local void @ALGORITHM_FIBCALL1_EXECUTE() #0 {
  store i32 1, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !5
  store i32 0, ptr @algorithm_fibcall1_Fold, align 4, !tbaa !5
  store i32 2, ptr @algorithm_fibcall1_i, align 4, !tbaa !5
  br label %1

1:                                                ; preds = %10, %0
  %2 = load i32, ptr @algorithm_fibcall1_i, align 4, !tbaa !5
  %3 = icmp sle i32 %2, 10000
  br i1 %3, label %4, label %13

4:                                                ; preds = %1
  %5 = load i32, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !5
  store i32 %5, ptr @algorithm_fibcall1_temp, align 4, !tbaa !5
  %6 = load i32, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !5
  %7 = load i32, ptr @algorithm_fibcall1_Fold, align 4, !tbaa !5
  %8 = add nsw i32 %6, %7
  store i32 %8, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !5
  %9 = load i32, ptr @algorithm_fibcall1_temp, align 4, !tbaa !5
  store i32 %9, ptr @algorithm_fibcall1_Fold, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %4
  %11 = load i32, ptr @algorithm_fibcall1_i, align 4, !tbaa !5
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr @algorithm_fibcall1_i, align 4, !tbaa !5
  br label %1, !llvm.loop !9

13:                                               ; preds = %1
  %14 = load i32, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !5
  store i32 %14, ptr @algorithm_fibcall1_ans, align 4, !tbaa !5
  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, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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"

@algorithm_fibcall1_Fnew = external dso_local local_unnamed_addr global i32, align 4
@algorithm_fibcall1_Fold = external dso_local local_unnamed_addr global i32, align 4
@algorithm_fibcall1_i = external dso_local local_unnamed_addr global i32, align 4
@algorithm_fibcall1_temp = external dso_local local_unnamed_addr global i32, align 4
@algorithm_fibcall1_ans = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @ALGORITHM_FIBCALL1_EXECUTE() local_unnamed_addr #0 {
  br label %1

1:                                                ; preds = %1, %0
  %storemerge3 = phi i32 [ 2, %0 ], [ %15, %1 ]
  %2 = phi i32 [ 1, %0 ], [ %14, %1 ]
  %3 = phi i32 [ 0, %0 ], [ %13, %1 ]
  %4 = add nsw i32 %3, %2
  %5 = add nsw i32 %2, %4
  %6 = add nsw i32 %4, %5
  %7 = add nsw i32 %5, %6
  %8 = add nsw i32 %6, %7
  %9 = add nsw i32 %7, %8
  %10 = add nsw i32 %8, %9
  %11 = add nsw i32 %9, %10
  %12 = add nsw i32 %10, %11
  %13 = add nsw i32 %11, %12
  %14 = add nsw i32 %12, %13
  %15 = add nuw nsw i32 %storemerge3, 11
  %exitcond.not.10 = icmp eq i32 %15, 10001
  br i1 %exitcond.not.10, label %16, label %1, !llvm.loop !5

16:                                               ; preds = %1
  store i32 10001, ptr @algorithm_fibcall1_i, align 4, !tbaa !7
  store i32 %14, ptr @algorithm_fibcall1_Fnew, align 4, !tbaa !7
  store i32 %13, ptr @algorithm_fibcall1_temp, align 4, !tbaa !7
  store i32 %13, ptr @algorithm_fibcall1_Fold, align 4, !tbaa !7
  store i32 %14, ptr @algorithm_fibcall1_ans, align 4, !tbaa !7
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: none, inaccessiblemem: none) 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SimplifyCFGPass