; LLVM IR from danginsburg/opengles3-book :: Chapter_6/Example_6_3 (Example_6_3)

; 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.ESContext = type { ptr, ptr, i32, i32, ptr, i64, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
%struct.UserData = type { i32 }

@__const.Draw.color = external hidden unnamed_addr constant [4 x float], align 16

; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; 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 void @Draw(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca [4 x float], align 16
  %5 = alloca [9 x float], align 16
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.ESContext, ptr %6, i32 0, i32 1
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  store ptr %8, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %4) #5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %4, ptr align 16 @__const.Draw.color, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 36, ptr %5) #5
  call void @llvm.memset.p0.i64(ptr align 16 %5, i8 0, i64 36, i1 false)
  %9 = getelementptr inbounds [9 x float], ptr %5, i32 0, i32 1
  store float 5.000000e-01, ptr %9, align 4
  %10 = getelementptr inbounds [9 x float], ptr %5, i32 0, i32 3
  store float -5.000000e-01, ptr %10, align 4
  %11 = getelementptr inbounds [9 x float], ptr %5, i32 0, i32 4
  store float -5.000000e-01, ptr %11, align 16
  %12 = getelementptr inbounds [9 x float], ptr %5, i32 0, i32 6
  store float 5.000000e-01, ptr %12, align 8
  %13 = getelementptr inbounds [9 x float], ptr %5, i32 0, i32 7
  store float -5.000000e-01, ptr %13, align 4
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.ESContext, ptr %14, i32 0, i32 2
  %16 = load i32, ptr %15, align 8, !tbaa !13
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.ESContext, ptr %17, i32 0, i32 3
  %19 = load i32, ptr %18, align 4, !tbaa !14
  call void @glViewport(i32 noundef 0, i32 noundef 0, i32 noundef %16, i32 noundef %19)
  call void @glClear(i32 noundef 16384)
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.UserData, ptr %20, i32 0, i32 0
  %22 = load i32, ptr %21, align 4, !tbaa !15
  call void @glUseProgram(i32 noundef %22)
  %23 = getelementptr inbounds [9 x float], ptr %5, i64 0, i64 0
  call void @glVertexAttribPointer(i32 noundef 0, i32 noundef 3, i32 noundef 5126, i8 noundef zeroext 0, i32 noundef 0, ptr noundef %23)
  call void @glEnableVertexAttribArray(i32 noundef 0)
  %24 = getelementptr inbounds [4 x float], ptr %4, i64 0, i64 0
  call void @glVertexAttrib4fv(i32 noundef 1, ptr noundef %24)
  call void @glDrawArrays(i32 noundef 4, i32 noundef 0, i32 noundef 3)
  call void @glDisableVertexAttribArray(i32 noundef 0)
  call void @llvm.lifetime.end.p0(i64 36, ptr %5) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr %4) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

declare void @glViewport(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #4

declare void @glClear(i32 noundef) #4

declare void @glUseProgram(i32 noundef) #4

declare void @glVertexAttribPointer(i32 noundef, i32 noundef, i32 noundef, i8 noundef zeroext, i32 noundef, ptr noundef) #4

declare void @glEnableVertexAttribArray(i32 noundef) #4

declare void @glVertexAttrib4fv(i32 noundef, ptr noundef) #4

declare void @glDrawArrays(i32 noundef, i32 noundef, i32 noundef) #4

declare void @glDisableVertexAttribArray(i32 noundef) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { "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 #5 = { 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, !6, i64 8}
!10 = !{!"ESContext", !6, i64 0, !6, i64 8, !11, i64 16, !11, i64 20, !6, i64 24, !12, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !11, i64 16}
!14 = !{!10, !11, i64 20}
!15 = !{!16, !11, i64 0}
!16 = !{!"", !11, 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"

@__const.Draw.color = external hidden unnamed_addr constant [4 x float], align 16

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

; Function Attrs: mustprogress 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) #1

; Function Attrs: mustprogress 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 void @Draw(ptr nocapture noundef readonly %0) local_unnamed_addr #2 {
  %2 = alloca [4 x float], align 16
  %3 = alloca [9 x float], align 16
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %2) #5
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %2, ptr noundef nonnull align 16 dereferenceable(16) @__const.Draw.color, i64 16, i1 false)
  call void @llvm.lifetime.start.p0(i64 36, ptr nonnull %3) #5
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(36) %3, i8 0, i64 36, i1 false)
  %6 = getelementptr inbounds i8, ptr %3, i64 4
  store float 5.000000e-01, ptr %6, align 4
  %7 = getelementptr inbounds i8, ptr %3, i64 12
  store <2 x float> <float -5.000000e-01, float -5.000000e-01>, ptr %7, align 4
  %8 = getelementptr inbounds i8, ptr %3, i64 24
  store <2 x float> <float 5.000000e-01, float -5.000000e-01>, ptr %8, align 8
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  %10 = load i32, ptr %9, align 8, !tbaa !12
  %11 = getelementptr inbounds i8, ptr %0, i64 20
  %12 = load i32, ptr %11, align 4, !tbaa !13
  tail call void @glViewport(i32 noundef 0, i32 noundef 0, i32 noundef %10, i32 noundef %12) #5
  tail call void @glClear(i32 noundef 16384) #5
  %13 = load i32, ptr %5, align 4, !tbaa !14
  tail call void @glUseProgram(i32 noundef %13) #5
  call void @glVertexAttribPointer(i32 noundef 0, i32 noundef 3, i32 noundef 5126, i8 noundef zeroext 0, i32 noundef 0, ptr noundef nonnull %3) #5
  call void @glEnableVertexAttribArray(i32 noundef 0) #5
  call void @glVertexAttrib4fv(i32 noundef 1, ptr noundef nonnull %2) #5
  call void @glDrawArrays(i32 noundef 4, i32 noundef 0, i32 noundef 3) #5
  call void @glDisableVertexAttribArray(i32 noundef 0) #5
  call void @llvm.lifetime.end.p0(i64 36, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %2) #5
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

declare void @glViewport(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #4

declare void @glClear(i32 noundef) local_unnamed_addr #4

declare void @glUseProgram(i32 noundef) local_unnamed_addr #4

declare void @glVertexAttribPointer(i32 noundef, i32 noundef, i32 noundef, i8 noundef zeroext, i32 noundef, ptr noundef) local_unnamed_addr #4

declare void @glEnableVertexAttribArray(i32 noundef) local_unnamed_addr #4

declare void @glVertexAttrib4fv(i32 noundef, ptr noundef) local_unnamed_addr #4

declare void @glDrawArrays(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #4

declare void @glDisableVertexAttribArray(i32 noundef) local_unnamed_addr #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { "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 #5 = { 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, !7, i64 8}
!6 = !{!"ESContext", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20, !7, i64 24, !11, i64 32, !7, i64 40, !7, i64 48, !7, i64 56, !7, i64 64, !7, i64 72, !7, i64 80, !7, i64 88}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !10, i64 16}
!13 = !{!6, !10, i64 20}
!14 = !{!15, !10, i64 0}
!15 = !{!"", !10, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,TailCallElimPass