; LLVM IR from paroj/gltut :: Tut 17 Spotlight on Textures/ProjectedLight.ll (Z14CreateSamplersv)

; 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"

@g_samplers = external dso_local global [2 x i32], align 4
@_funcptr_glGenSamplers = external global ptr, align 8
@_funcptr_glSamplerParameteri = external global ptr, align 8
@__const._Z14CreateSamplersv.color = external hidden unnamed_addr constant [4 x float], align 16
@_funcptr_glSamplerParameterfv = external global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z14CreateSamplersv() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [4 x float], align 16
  %3 = load ptr, ptr @_funcptr_glGenSamplers, align 8, !tbaa !5
  call void %3(i32 noundef 2, ptr noundef @g_samplers)
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  store i32 0, ptr %1, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %19, %0
  %5 = load i32, ptr %1, align 4, !tbaa !9
  %6 = icmp slt i32 %5, 2
  br i1 %6, label %8, label %7

7:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  br label %22

8:                                                ; preds = %4
  %9 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %10 = load i32, ptr %1, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [2 x i32], ptr @g_samplers, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !9
  call void %9(i32 noundef %13, i32 noundef 10240, i32 noundef 9729)
  %14 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %15 = load i32, ptr %1, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [2 x i32], ptr @g_samplers, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !9
  call void %14(i32 noundef %18, i32 noundef 10241, i32 noundef 9729)
  br label %19

19:                                               ; preds = %8
  %20 = load i32, ptr %1, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %1, align 4, !tbaa !9
  br label %4, !llvm.loop !11

22:                                               ; preds = %7
  %23 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %24 = load i32, ptr @g_samplers, align 4, !tbaa !9
  call void %23(i32 noundef %24, i32 noundef 10242, i32 noundef 33071)
  %25 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %26 = load i32, ptr @g_samplers, align 4, !tbaa !9
  call void %25(i32 noundef %26, i32 noundef 10243, i32 noundef 33071)
  %27 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %28 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @g_samplers, i64 0, i64 1), align 4, !tbaa !9
  call void %27(i32 noundef %28, i32 noundef 10242, i32 noundef 33069)
  %29 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %30 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @g_samplers, i64 0, i64 1), align 4, !tbaa !9
  call void %29(i32 noundef %30, i32 noundef 10243, i32 noundef 33069)
  call void @llvm.lifetime.start.p0(i64 16, ptr %2) #3
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %2, ptr align 16 @__const._Z14CreateSamplersv.color, i64 16, i1 false)
  %31 = load ptr, ptr @_funcptr_glSamplerParameterfv, align 8, !tbaa !5
  %32 = load i32, ptr getelementptr inbounds ([2 x i32], ptr @g_samplers, i64 0, i64 1), align 4, !tbaa !9
  %33 = getelementptr inbounds [4 x float], ptr %2, i64 0, i64 0
  call void %31(i32 noundef %32, i32 noundef 4100, ptr noundef %33)
  call void @llvm.lifetime.end.p0(i64 16, ptr %2) #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 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 = distinct !{!11, !12}
!12 = !{!"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"

@g_samplers = external dso_local global [2 x i32], align 4
@_funcptr_glGenSamplers = external local_unnamed_addr global ptr, align 8
@_funcptr_glSamplerParameteri = external local_unnamed_addr global ptr, align 8
@__const._Z14CreateSamplersv.color = external hidden unnamed_addr constant [4 x float], align 16
@_funcptr_glSamplerParameterfv = external local_unnamed_addr global ptr, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z14CreateSamplersv() local_unnamed_addr #0 {
  %1 = alloca [4 x float], align 16
  %2 = load ptr, ptr @_funcptr_glGenSamplers, align 8, !tbaa !5
  tail call void %2(i32 noundef 2, ptr noundef nonnull @g_samplers)
  %3 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %4 = load i32, ptr @g_samplers, align 4, !tbaa !9
  tail call void %3(i32 noundef %4, i32 noundef 10240, i32 noundef 9729)
  %5 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %6 = load i32, ptr @g_samplers, align 4, !tbaa !9
  tail call void %5(i32 noundef %6, i32 noundef 10241, i32 noundef 9729)
  %7 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %8 = load i32, ptr getelementptr inbounds (i8, ptr @g_samplers, i64 4), align 4, !tbaa !9
  tail call void %7(i32 noundef %8, i32 noundef 10240, i32 noundef 9729)
  %9 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %10 = load i32, ptr getelementptr inbounds (i8, ptr @g_samplers, i64 4), align 4, !tbaa !9
  tail call void %9(i32 noundef %10, i32 noundef 10241, i32 noundef 9729)
  %11 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %12 = load i32, ptr @g_samplers, align 4, !tbaa !9
  tail call void %11(i32 noundef %12, i32 noundef 10242, i32 noundef 33071)
  %13 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %14 = load i32, ptr @g_samplers, align 4, !tbaa !9
  tail call void %13(i32 noundef %14, i32 noundef 10243, i32 noundef 33071)
  %15 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %16 = load i32, ptr getelementptr inbounds (i8, ptr @g_samplers, i64 4), align 4, !tbaa !9
  tail call void %15(i32 noundef %16, i32 noundef 10242, i32 noundef 33069)
  %17 = load ptr, ptr @_funcptr_glSamplerParameteri, align 8, !tbaa !5
  %18 = load i32, ptr getelementptr inbounds (i8, ptr @g_samplers, i64 4), align 4, !tbaa !9
  tail call void %17(i32 noundef %18, i32 noundef 10243, i32 noundef 33069)
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %1) #3
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(16) %1, ptr noundef nonnull align 16 dereferenceable(16) @__const._Z14CreateSamplersv.color, i64 16, i1 false)
  %19 = load ptr, ptr @_funcptr_glSamplerParameterfv, align 8, !tbaa !5
  %20 = load i32, ptr getelementptr inbounds (i8, ptr @g_samplers, i64 4), align 4, !tbaa !9
  call void %19(i32 noundef %20, i32 noundef 4100, ptr noundef nonnull %1)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %1) #3
  ret void
}

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

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

; 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) #2

attributes #0 = { 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass