; LLVM IR from josselinonduty/2022-numerical-methods-for-solving-differential-equations :: src (functions)

; 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.__matrix_t = type { ptr, i64, i64 }

@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @vector_display(ptr noundef) #0

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local void @matrix_display(ptr noundef byval(%struct.__matrix_t) align 8 %0) #0 {
  %2 = alloca i64, align 8
  %3 = getelementptr inbounds %struct.__matrix_t, ptr %0, i32 0, i32 2
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef 2, i64 noundef %4)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  store i64 0, ptr %2, align 8, !tbaa !11
  br label %6

6:                                                ; preds = %19, %1
  %7 = load i64, ptr %2, align 8, !tbaa !11
  %8 = getelementptr inbounds %struct.__matrix_t, ptr %0, i32 0, i32 2
  %9 = load i64, ptr %8, align 8, !tbaa !5
  %10 = icmp ult i64 %7, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  br label %22

12:                                               ; preds = %6
  %13 = getelementptr inbounds %struct.__matrix_t, ptr %0, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  %15 = load i64, ptr %2, align 8, !tbaa !11
  %16 = getelementptr inbounds ptr, ptr %14, i64 %15
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  call void @vector_display(ptr noundef %17)
  %18 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %19

19:                                               ; preds = %12
  %20 = load i64, ptr %2, align 8, !tbaa !11
  %21 = add i64 %20, 1
  store i64 %21, ptr %2, align 8, !tbaa !11
  br label %6, !llvm.loop !14

22:                                               ; preds = %11
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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, !10, i64 16}
!6 = !{!"__matrix_t", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!10, !10, i64 0}
!12 = !{!6, !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

%struct.__matrix_t = type { ptr, i64, i64 }

@.str.1 = external hidden unnamed_addr constant [20 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @vector_display(ptr noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @matrix_display(ptr nocapture noundef readonly byval(%struct.__matrix_t) align 8 %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef 2, i64 noundef %3)
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %5 = load ptr, ptr %0, align 8, !tbaa !11
  br label %6

._crit_edge:                                      ; preds = %6, %1
  ret void

6:                                                ; preds = %.lr.ph, %6
  %.03 = phi i64 [ 0, %.lr.ph ], [ %10, %6 ]
  %7 = getelementptr inbounds ptr, ptr %5, i64 %.03
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  tail call void @vector_display(ptr noundef %8)
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %10 = add nuw i64 %.03, 1
  %exitcond.not = icmp eq i64 %10, %3
  br i1 %exitcond.not, label %._crit_edge, label %6, !llvm.loop !13
}

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 = { 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" }

!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, !10, i64 16}
!6 = !{!"__matrix_t", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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