; LLVM IR from libtcod/libtcod :: src/libtcod (heightmap_c)

; 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.TCOD_heightmap_t = type { i32, i32, ptr }

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

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

; Function Attrs: nounwind uwtable
define dso_local i32 @TCOD_heightmap_count_cells(ptr noundef %0, float noundef %1, float noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca float, align 4
  %7 = alloca float, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store float %1, ptr %6, align 4, !tbaa !9
  store float %2, ptr %7, align 4, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %13, label %12

12:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  br label %54

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !11
  br label %14

14:                                               ; preds = %49, %13
  %15 = load i32, ptr %9, align 4, !tbaa !11
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.TCOD_heightmap_t, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !13
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.TCOD_heightmap_t, ptr %19, i32 0, i32 1
  %21 = load i32, ptr %20, align 4, !tbaa !15
  %22 = mul nsw i32 %18, %21
  %23 = icmp slt i32 %15, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %52

25:                                               ; preds = %14
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.TCOD_heightmap_t, ptr %26, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !16
  %29 = load i32, ptr %9, align 4, !tbaa !11
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds float, ptr %28, i64 %30
  %32 = load float, ptr %31, align 4, !tbaa !9
  %33 = load float, ptr %6, align 4, !tbaa !9
  %34 = fcmp oge float %32, %33
  br i1 %34, label %35, label %48

35:                                               ; preds = %25
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.TCOD_heightmap_t, ptr %36, i32 0, i32 2
  %38 = load ptr, ptr %37, align 8, !tbaa !16
  %39 = load i32, ptr %9, align 4, !tbaa !11
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds float, ptr %38, i64 %40
  %42 = load float, ptr %41, align 4, !tbaa !9
  %43 = load float, ptr %7, align 4, !tbaa !9
  %44 = fcmp ole float %42, %43
  br i1 %44, label %45, label %48

45:                                               ; preds = %35
  %46 = load i32, ptr %8, align 4, !tbaa !11
  %47 = add nsw i32 %46, 1
  store i32 %47, ptr %8, align 4, !tbaa !11
  br label %48

48:                                               ; preds = %45, %35, %25
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %9, align 4, !tbaa !11
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %9, align 4, !tbaa !11
  br label %14, !llvm.loop !17

52:                                               ; preds = %24
  %53 = load i32, ptr %8, align 4, !tbaa !11
  store i32 %53, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %54

54:                                               ; preds = %52, %12
  %55 = load i32, ptr %4, align 4
  ret i32 %55
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !12, i64 0}
!14 = !{!"", !12, i64 0, !12, i64 4, !6, i64 8}
!15 = !{!14, !12, i64 4}
!16 = !{!14, !6, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @TCOD_heightmap_count_cells(ptr noundef readonly %0, float noundef %1, float noundef %2) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %4 = load i32, ptr %0, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 4
  %6 = load i32, ptr %5, align 4, !tbaa !11
  %7 = mul nsw i32 %6, %4
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %.preheader
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  %10 = load ptr, ptr %9, align 8, !tbaa !12
  %wide.trip.count = zext nneg i32 %7 to i64
  %min.iters.check = icmp ult i32 %7, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %wide.trip.count, 2147483640
  %broadcast.splatinsert = insertelement <4 x float> poison, float %1, i64 0
  %broadcast.splat = shufflevector <4 x float> %broadcast.splatinsert, <4 x float> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert24 = insertelement <4 x float> poison, float %2, i64 0
  %broadcast.splat25 = shufflevector <4 x float> %broadcast.splatinsert24, <4 x float> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %21, %vector.body ]
  %vec.phi22 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %22, %vector.body ]
  %11 = getelementptr inbounds float, ptr %10, i64 %index
  %12 = getelementptr inbounds i8, ptr %11, i64 16
  %wide.load = load <4 x float>, ptr %11, align 4, !tbaa !13
  %wide.load23 = load <4 x float>, ptr %12, align 4, !tbaa !13
  %13 = fcmp oge <4 x float> %wide.load, %broadcast.splat
  %14 = fcmp oge <4 x float> %wide.load23, %broadcast.splat
  %15 = fcmp ole <4 x float> %wide.load, %broadcast.splat25
  %16 = fcmp ole <4 x float> %wide.load23, %broadcast.splat25
  %17 = and <4 x i1> %13, %15
  %18 = and <4 x i1> %14, %16
  %19 = zext <4 x i1> %17 to <4 x i32>
  %20 = zext <4 x i1> %18 to <4 x i32>
  %21 = add <4 x i32> %vec.phi, %19
  %22 = add <4 x i32> %vec.phi22, %20
  %index.next = add nuw i64 %index, 8
  %23 = icmp eq i64 %index.next, %n.vec
  br i1 %23, label %middle.block, label %vector.body, !llvm.loop !15

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %22, %21
  %24 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %.loopexit, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %.01319.ph = phi i32 [ 0, %.lr.ph ], [ %24, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %.01319 = phi i32 [ %.1, %scalar.ph ], [ %.01319.ph, %scalar.ph.preheader ]
  %25 = getelementptr inbounds float, ptr %10, i64 %indvars.iv
  %26 = load float, ptr %25, align 4, !tbaa !13
  %27 = fcmp oge float %26, %1
  %28 = fcmp ole float %26, %2
  %or.cond.not = and i1 %27, %28
  %29 = zext i1 %or.cond.not to i32
  %.1 = add nuw nsw i32 %.01319, %29
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %scalar.ph, !llvm.loop !19

.loopexit:                                        ; preds = %scalar.ph, %middle.block, %.preheader, %3
  %.014 = phi i32 [ 0, %3 ], [ 0, %.preheader ], [ %24, %middle.block ], [ %.1, %scalar.ph ]
  ret i32 %.014
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #1

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 4}
!12 = !{!6, !10, i64 8}
!13 = !{!14, !14, i64 0}
!14 = !{!"float", !8, i64 0}
!15 = distinct !{!15, !16, !17, !18}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!"llvm.loop.isvectorized", i32 1}
!18 = !{!"llvm.loop.unroll.runtime.disable"}
!19 = distinct !{!19, !16, !18, !17}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass