; LLVM IR from BrunoLevy/learn-fpga :: LiteX/software/Doom/mc1-doom/src (p_pspr)

; 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.mobj_s = type { %struct.thinker_s, i32, i32, i32, ptr, ptr, i32, i32, i32, ptr, ptr, ptr, i32, i32, i32, i32, i32, i32, i32, i32, i32, ptr, i32, ptr, i32, i32, i32, i32, ptr, i32, i32, ptr, i32, %struct.mapthing_t, ptr }
%struct.thinker_s = type { ptr, ptr, %union.actionf_t }
%union.actionf_t = type { ptr }
%struct.mapthing_t = type { i16, i16, i16, i16, i16 }

@linetarget = external global ptr, align 8
@bulletslope = external dso_local global i32, align 4

; 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

declare i32 @P_AimLineAttack(ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @P_BulletSlope(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.mobj_s, ptr %4, i32 0, i32 6
  %6 = load i32, ptr %5, align 8, !tbaa !9
  store i32 %6, ptr %3, align 4, !tbaa !15
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = load i32, ptr %3, align 4, !tbaa !15
  %9 = call i32 @P_AimLineAttack(ptr noundef %7, i32 noundef %8, i32 noundef 67108864)
  store i32 %9, ptr @bulletslope, align 4, !tbaa !15
  %10 = load ptr, ptr @linetarget, align 8, !tbaa !5
  %11 = icmp ne ptr %10, null
  br i1 %11, label %27, label %12

12:                                               ; preds = %1
  %13 = load i32, ptr %3, align 4, !tbaa !15
  %14 = add i32 %13, 67108864
  store i32 %14, ptr %3, align 4, !tbaa !15
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !15
  %17 = call i32 @P_AimLineAttack(ptr noundef %15, i32 noundef %16, i32 noundef 67108864)
  store i32 %17, ptr @bulletslope, align 4, !tbaa !15
  %18 = load ptr, ptr @linetarget, align 8, !tbaa !5
  %19 = icmp ne ptr %18, null
  br i1 %19, label %26, label %20

20:                                               ; preds = %12
  %21 = load i32, ptr %3, align 4, !tbaa !15
  %22 = sub i32 %21, 134217728
  store i32 %22, ptr %3, align 4, !tbaa !15
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = load i32, ptr %3, align 4, !tbaa !15
  %25 = call i32 @P_AimLineAttack(ptr noundef %23, i32 noundef %24, i32 noundef 67108864)
  store i32 %25, ptr @bulletslope, align 4, !tbaa !15
  br label %26

26:                                               ; preds = %20, %12
  br label %27

27:                                               ; preds = %26, %1
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  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 = { 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 #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/C++ TBAA"}
!9 = !{!10, !12, i64 56}
!10 = !{!"mobj_s", !11, i64 0, !12, i64 24, !12, i64 28, !12, i64 32, !6, i64 40, !6, i64 48, !12, i64 56, !12, i64 60, !12, i64 64, !6, i64 72, !6, i64 80, !6, i64 88, !12, i64 96, !12, i64 100, !12, i64 104, !12, i64 108, !12, i64 112, !12, i64 116, !12, i64 120, !12, i64 124, !12, i64 128, !6, i64 136, !12, i64 144, !6, i64 152, !12, i64 160, !12, i64 164, !12, i64 168, !12, i64 172, !6, i64 176, !12, i64 184, !12, i64 188, !6, i64 192, !12, i64 200, !13, i64 204, !6, i64 216}
!11 = !{!"thinker_s", !6, i64 0, !6, i64 8, !7, i64 16}
!12 = !{!"int", !7, i64 0}
!13 = !{!"", !14, i64 0, !14, i64 2, !14, i64 4, !14, i64 6, !14, i64 8}
!14 = !{!"short", !7, i64 0}
!15 = !{!12, !12, i64 0}


; 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"

@linetarget = external local_unnamed_addr global ptr, align 8
@bulletslope = external dso_local local_unnamed_addr global i32, align 4

declare i32 @P_AimLineAttack(ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @P_BulletSlope(ptr noundef %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 56
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = tail call i32 @P_AimLineAttack(ptr noundef %0, i32 noundef %3, i32 noundef 67108864) #2
  store i32 %4, ptr @bulletslope, align 4, !tbaa !14
  %5 = load ptr, ptr @linetarget, align 8, !tbaa !15
  %.not = icmp eq ptr %5, null
  br i1 %.not, label %6, label %13

6:                                                ; preds = %1
  %7 = add i32 %3, 67108864
  %8 = tail call i32 @P_AimLineAttack(ptr noundef nonnull %0, i32 noundef %7, i32 noundef 67108864) #2
  store i32 %8, ptr @bulletslope, align 4, !tbaa !14
  %9 = load ptr, ptr @linetarget, align 8, !tbaa !15
  %.not8 = icmp eq ptr %9, null
  br i1 %.not8, label %10, label %13

10:                                               ; preds = %6
  %11 = add i32 %3, -67108864
  %12 = tail call i32 @P_AimLineAttack(ptr noundef nonnull %0, i32 noundef %11, i32 noundef 67108864) #2
  store i32 %12, ptr @bulletslope, align 4, !tbaa !14
  br label %13

13:                                               ; preds = %6, %10, %1
  ret void
}

attributes #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 = { 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, !11, i64 56}
!6 = !{!"mobj_s", !7, i64 0, !11, i64 24, !11, i64 28, !11, i64 32, !8, i64 40, !8, i64 48, !11, i64 56, !11, i64 60, !11, i64 64, !8, i64 72, !8, i64 80, !8, i64 88, !11, i64 96, !11, i64 100, !11, i64 104, !11, i64 108, !11, i64 112, !11, i64 116, !11, i64 120, !11, i64 124, !11, i64 128, !8, i64 136, !11, i64 144, !8, i64 152, !11, i64 160, !11, i64 164, !11, i64 168, !11, i64 172, !8, i64 176, !11, i64 184, !11, i64 188, !8, i64 192, !11, i64 200, !12, i64 204, !8, i64 216}
!7 = !{!"thinker_s", !8, i64 0, !8, i64 8, !9, i64 16}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"int", !9, i64 0}
!12 = !{!"", !13, i64 0, !13, i64 2, !13, i64 4, !13, i64 6, !13, i64 8}
!13 = !{!"short", !9, i64 0}
!14 = !{!11, !11, i64 0}
!15 = !{!8, !8, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass