; LLVM IR from mobile-algorithm-optimization/guide :: OpenCLTranspose/main.ll (Z11PrintMatrixPhii)

; 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"

@.str.15 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z11PrintMatrixPhii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %38, %3
  %11 = load i32, ptr %7, align 4, !tbaa !9
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %41

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %16

16:                                               ; preds = %33, %15
  %17 = load i32, ptr %9, align 4, !tbaa !9
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %36

21:                                               ; preds = %16
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = mul nsw i32 %23, %24
  %26 = load i32, ptr %9, align 4, !tbaa !9
  %27 = add nsw i32 %25, %26
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i8, ptr %22, i64 %28
  %30 = load i8, ptr %29, align 1, !tbaa !11
  %31 = zext i8 %30 to i32
  %32 = call i32 (ptr, ...) @printf(ptr noundef @.str.15, i32 noundef %31)
  br label %33

33:                                               ; preds = %21
  %34 = load i32, ptr %9, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %9, align 4, !tbaa !9
  br label %16, !llvm.loop !12

36:                                               ; preds = %20
  %37 = call i32 (ptr, ...) @printf(ptr noundef @.str.16)
  br label %38

38:                                               ; preds = %36
  %39 = load i32, ptr %7, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %7, align 4, !tbaa !9
  br label %10, !llvm.loop !14

41:                                               ; preds = %14
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress 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 #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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}


; 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"

@.str.15 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z11PrintMatrixPhii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = icmp sgt i32 %2, 0
  br i1 %4, label %.preheader.lr.ph, label %._crit_edge13

.preheader.lr.ph:                                 ; preds = %3
  %5 = icmp sgt i32 %1, 0
  br i1 %5, label %.preheader.us.preheader, label %.preheader

.preheader.us.preheader:                          ; preds = %.preheader.lr.ph
  %6 = zext nneg i32 %1 to i64
  %wide.trip.count20 = zext nneg i32 %2 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv17 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next18, %._crit_edge.us ]
  %7 = mul nuw nsw i64 %indvars.iv17, %6
  %invariant.gep = getelementptr inbounds i8, ptr %0, i64 %7
  br label %8

8:                                                ; preds = %.preheader.us, %8
  %indvars.iv = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next, %8 ]
  %gep = getelementptr inbounds i8, ptr %invariant.gep, i64 %indvars.iv
  %9 = load i8, ptr %gep, align 1, !tbaa !5
  %10 = zext i8 %9 to i32
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.15, i32 noundef %10)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond16.not = icmp eq i64 %indvars.iv.next, %6
  br i1 %exitcond16.not, label %._crit_edge.us, label %8, !llvm.loop !8

._crit_edge.us:                                   ; preds = %8
  %12 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.16)
  %indvars.iv.next18 = add nuw nsw i64 %indvars.iv17, 1
  %exitcond21.not = icmp eq i64 %indvars.iv.next18, %wide.trip.count20
  br i1 %exitcond21.not, label %._crit_edge13, label %.preheader.us, !llvm.loop !10

.preheader:                                       ; preds = %.preheader.lr.ph, %.preheader
  %.0912 = phi i32 [ %14, %.preheader ], [ 0, %.preheader.lr.ph ]
  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.16)
  %14 = add nuw nsw i32 %.0912, 1
  %exitcond.not = icmp eq i32 %14, %2
  br i1 %exitcond.not, label %._crit_edge13, label %.preheader, !llvm.loop !10

._crit_edge13:                                    ; preds = %.preheader, %._crit_edge.us, %3
  ret void
}

attributes #0 = { 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 #1 = { mustprogress nofree 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}
!10 = distinct !{!10, !9}


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