; LLVM IR from facebookresearch/habitat-sim :: src/deps/basis-universal/encoder (lodepng)

; 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.LodePNGColorMode = type { i32, i32, ptr, i64, i32, i32, i32, i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z25lodepng_is_greyscale_typePK16LodePNGColorMode(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.LodePNGColorMode, ptr %3, i32 0, i32 0
  %5 = load i32, ptr %4, align 8, !tbaa !9
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %12, label %7

7:                                                ; preds = %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.LodePNGColorMode, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 8, !tbaa !9
  %11 = icmp eq i32 %10, 4
  br label %12

12:                                               ; preds = %7, %1
  %13 = phi i1 [ true, %1 ], [ %11, %7 ]
  %14 = zext i1 %13 to i32
  ret i32 %14
}

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" }

!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, !11, i64 0}
!10 = !{!"_ZTS16LodePNGColorMode", !11, i64 0, !12, i64 4, !6, i64 8, !13, i64 16, !12, i64 24, !12, i64 28, !12, i64 32, !12, i64 36}
!11 = !{!"_ZTS16LodePNGColorType", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"long", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef range(i32 0, 2) i32 @_Z25lodepng_is_greyscale_typePK16LodePNGColorMode(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %3 = and i32 %2, -5
  %narrow = icmp eq i32 %3, 0
  %4 = zext i1 %narrow to i32
  ret i32 %4
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"_ZTS16LodePNGColorMode", !7, i64 0, !10, i64 4, !11, i64 8, !12, i64 16, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36}
!7 = !{!"_ZTS16LodePNGColorType", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"long", !8, i64 0}


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