; LLVM IR from BrunoLevy/learn-fpga :: LiteX/software/Tagl/Lib (peng_24)

; 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"

%class.GVertexAttributes = type { i32, i32, i32, i32, i32, i32, i32, i32, i32 }

@_ZN16GraphicComponent10_graph_memE = external global ptr, align 8
@_ZN16GraphicComponent15_bytes_per_lineE = external global i32, align 4
@_ZN16GraphicComponent6_z_memE = external global ptr, align 8
@_ZN16GraphicComponent6_widthE = external global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN16PolygonEngine_2414SetPixel_rgb_zEP17GVertexAttributesii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = 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 8, ptr %7) #3
  %12 = load ptr, ptr @_ZN16GraphicComponent6_z_memE, align 8, !tbaa !5
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = load i32, ptr @_ZN16GraphicComponent6_widthE, align 4, !tbaa !9
  %15 = mul nsw i32 %13, %14
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds i16, ptr %12, i64 %16
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i16, ptr %17, i64 %19
  store ptr %20, ptr %7, align 8, !tbaa !5
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %class.GVertexAttributes, ptr %21, i32 0, i32 0
  %23 = load i32, ptr %22, align 4, !tbaa !11
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = load i16, ptr %24, align 2, !tbaa !13
  %26 = zext i16 %25 to i32
  %27 = icmp slt i32 %23, %26
  br i1 %27, label %28, label %88

28:                                               ; preds = %3
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %class.GVertexAttributes, ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 4, !tbaa !11
  %32 = trunc i32 %31 to i16
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  store i16 %32, ptr %33, align 2, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %class.GVertexAttributes, ptr %34, i32 0, i32 2
  %36 = load i32, ptr %35, align 4, !tbaa !15
  %37 = icmp slt i32 %36, 255
  br i1 %37, label %38, label %42

38:                                               ; preds = %28
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %class.GVertexAttributes, ptr %39, i32 0, i32 2
  %41 = load i32, ptr %40, align 4, !tbaa !15
  br label %43

42:                                               ; preds = %28
  br label %43

43:                                               ; preds = %42, %38
  %44 = phi i32 [ %41, %38 ], [ 255, %42 ]
  %45 = ashr i32 %44, 0
  store i32 %45, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = getelementptr inbounds %class.GVertexAttributes, ptr %46, i32 0, i32 3
  %48 = load i32, ptr %47, align 4, !tbaa !16
  %49 = icmp slt i32 %48, 255
  br i1 %49, label %50, label %54

50:                                               ; preds = %43
  %51 = load ptr, ptr %4, align 8, !tbaa !5
  %52 = getelementptr inbounds %class.GVertexAttributes, ptr %51, i32 0, i32 3
  %53 = load i32, ptr %52, align 4, !tbaa !16
  br label %55

54:                                               ; preds = %43
  br label %55

55:                                               ; preds = %54, %50
  %56 = phi i32 [ %53, %50 ], [ 255, %54 ]
  %57 = ashr i32 %56, 0
  store i32 %57, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = getelementptr inbounds %class.GVertexAttributes, ptr %58, i32 0, i32 4
  %60 = load i32, ptr %59, align 4, !tbaa !17
  %61 = icmp slt i32 %60, 255
  br i1 %61, label %62, label %66

62:                                               ; preds = %55
  %63 = load ptr, ptr %4, align 8, !tbaa !5
  %64 = getelementptr inbounds %class.GVertexAttributes, ptr %63, i32 0, i32 4
  %65 = load i32, ptr %64, align 4, !tbaa !17
  br label %67

66:                                               ; preds = %55
  br label %67

67:                                               ; preds = %66, %62
  %68 = phi i32 [ %65, %62 ], [ 255, %66 ]
  %69 = ashr i32 %68, 0
  store i32 %69, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %70 = load i32, ptr %10, align 4, !tbaa !9
  %71 = shl i32 %70, 0
  %72 = load i32, ptr %9, align 4, !tbaa !9
  %73 = shl i32 %72, 8
  %74 = or i32 %71, %73
  %75 = load i32, ptr %8, align 4, !tbaa !9
  %76 = shl i32 %75, 16
  %77 = or i32 %74, %76
  store i32 %77, ptr %11, align 4, !tbaa !9
  %78 = load ptr, ptr @_ZN16GraphicComponent10_graph_memE, align 8, !tbaa !5
  %79 = load i32, ptr %6, align 4, !tbaa !9
  %80 = load i32, ptr @_ZN16GraphicComponent15_bytes_per_lineE, align 4, !tbaa !9
  %81 = mul nsw i32 %79, %80
  %82 = sext i32 %81 to i64
  %83 = getelementptr inbounds i8, ptr %78, i64 %82
  %84 = load i32, ptr %5, align 4, !tbaa !9
  %85 = sext i32 %84 to i64
  %86 = mul i64 %85, 3
  %87 = getelementptr inbounds i8, ptr %83, i64 %86
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %87, ptr align 4 %11, i64 3, i1 false), !tbaa.struct !18
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %88

88:                                               ; preds = %67, %3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

attributes #0 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree 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, !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 = !{!12, !10, i64 0}
!12 = !{!"_ZTS17GVertexAttributes", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32}
!13 = !{!14, !14, i64 0}
!14 = !{!"short", !7, i64 0}
!15 = !{!12, !10, i64 8}
!16 = !{!12, !10, i64 12}
!17 = !{!12, !10, i64 16}
!18 = !{i64 0, i64 1, !19, i64 1, i64 1, !19, i64 2, i64 1, !19}
!19 = !{!7, !7, 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"

@_ZN16GraphicComponent10_graph_memE = external local_unnamed_addr global ptr, align 8
@_ZN16GraphicComponent15_bytes_per_lineE = external local_unnamed_addr global i32, align 4
@_ZN16GraphicComponent6_z_memE = external local_unnamed_addr global ptr, align 8
@_ZN16GraphicComponent6_widthE = external local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN16PolygonEngine_2414SetPixel_rgb_zEP17GVertexAttributesii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = load ptr, ptr @_ZN16GraphicComponent6_z_memE, align 8, !tbaa !5
  %5 = load i32, ptr @_ZN16GraphicComponent6_widthE, align 4, !tbaa !9
  %6 = mul nsw i32 %5, %2
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds i16, ptr %4, i64 %7
  %9 = sext i32 %1 to i64
  %10 = getelementptr inbounds i16, ptr %8, i64 %9
  %11 = load i32, ptr %0, align 4, !tbaa !11
  %12 = load i16, ptr %10, align 2, !tbaa !13
  %13 = zext i16 %12 to i32
  %14 = icmp slt i32 %11, %13
  br i1 %14, label %15, label %38

15:                                               ; preds = %3
  %16 = trunc i32 %11 to i16
  store i16 %16, ptr %10, align 2, !tbaa !13
  %17 = getelementptr inbounds i8, ptr %0, i64 8
  %18 = load i32, ptr %17, align 4, !tbaa !15
  %19 = icmp slt i32 %18, 255
  %20 = shl i32 %18, 16
  %spec.select = select i1 %19, i32 %20, i32 16711680
  %21 = getelementptr inbounds i8, ptr %0, i64 12
  %22 = load i32, ptr %21, align 4, !tbaa !16
  %23 = icmp slt i32 %22, 255
  %24 = shl i32 %22, 8
  %25 = select i1 %23, i32 %24, i32 65280
  %26 = getelementptr inbounds i8, ptr %0, i64 16
  %27 = load i32, ptr %26, align 4, !tbaa !17
  %28 = tail call i32 @llvm.smin.i32(i32 %27, i32 255)
  %29 = or i32 %25, %spec.select
  %30 = or i32 %29, %28
  %31 = load ptr, ptr @_ZN16GraphicComponent10_graph_memE, align 8, !tbaa !5
  %32 = load i32, ptr @_ZN16GraphicComponent15_bytes_per_lineE, align 4, !tbaa !9
  %33 = mul nsw i32 %32, %2
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i8, ptr %31, i64 %34
  %36 = mul nsw i64 %9, 3
  %37 = getelementptr inbounds i8, ptr %35, i64 %36
  %.0.extract.trunc = trunc i32 %30 to i24
  store i24 %.0.extract.trunc, ptr %37, align 1
  br label %38

38:                                               ; preds = %15, %3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, 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, !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 = !{!12, !10, i64 0}
!12 = !{!"_ZTS17GVertexAttributes", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32}
!13 = !{!14, !14, i64 0}
!14 = !{!"short", !7, i64 0}
!15 = !{!12, !10, i64 8}
!16 = !{!12, !10, i64 12}
!17 = !{!12, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass