; LLVM IR from tessarin/dither :: src (MCQuantization)

; 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.MCTriplet = type { [3 x i8] }

; Function Attrs: nounwind uwtable
define dso_local i24 @MCTripletMake(i8 noundef zeroext %0, i8 noundef zeroext %1, i8 noundef zeroext %2) #0 {
  %4 = alloca %struct.MCTriplet, align 1
  %5 = alloca i8, align 1
  %6 = alloca i8, align 1
  %7 = alloca i8, align 1
  %8 = alloca i24, align 4
  store i8 %0, ptr %5, align 1, !tbaa !5
  store i8 %1, ptr %6, align 1, !tbaa !5
  store i8 %2, ptr %7, align 1, !tbaa !5
  %9 = load i8, ptr %5, align 1, !tbaa !5
  %10 = getelementptr inbounds %struct.MCTriplet, ptr %4, i32 0, i32 0
  %11 = getelementptr inbounds [3 x i8], ptr %10, i64 0, i64 0
  store i8 %9, ptr %11, align 1, !tbaa !5
  %12 = load i8, ptr %6, align 1, !tbaa !5
  %13 = getelementptr inbounds %struct.MCTriplet, ptr %4, i32 0, i32 0
  %14 = getelementptr inbounds [3 x i8], ptr %13, i64 0, i64 1
  store i8 %12, ptr %14, align 1, !tbaa !5
  %15 = load i8, ptr %7, align 1, !tbaa !5
  %16 = getelementptr inbounds %struct.MCTriplet, ptr %4, i32 0, i32 0
  %17 = getelementptr inbounds [3 x i8], ptr %16, i64 0, i64 2
  store i8 %15, ptr %17, align 1, !tbaa !5
  %18 = getelementptr inbounds %struct.MCTriplet, ptr %4, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %8, ptr align 1 %18, i64 3, i1 false)
  %19 = load i24, ptr %8, align 4
  ret i24 %19
}

; 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

attributes #0 = { 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 nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local i24 @MCTripletMake(i8 noundef zeroext %0, i8 noundef zeroext %1, i8 noundef zeroext %2) local_unnamed_addr #0 {
  %.sroa.3.0.insert.ext = zext i8 %2 to i24
  %.sroa.3.0.insert.shift = shl nuw i24 %.sroa.3.0.insert.ext, 16
  %.sroa.2.0.insert.ext = zext i8 %1 to i24
  %.sroa.2.0.insert.shift = shl nuw nsw i24 %.sroa.2.0.insert.ext, 8
  %.sroa.2.0.insert.insert = or disjoint i24 %.sroa.3.0.insert.shift, %.sroa.2.0.insert.shift
  %.sroa.0.0.insert.ext = zext i8 %0 to i24
  %.sroa.0.0.insert.insert = or disjoint i24 %.sroa.2.0.insert.insert, %.sroa.0.0.insert.ext
  ret i24 %.sroa.0.0.insert.insert
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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" }

!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)"}


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