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

; 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.basisu::etc2_eac_rg11" = type { [2 x %"struct.basisu::etc2_eac_r11"] }
%"struct.basisu::etc2_eac_r11" = type { i64 }

; 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 nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6basisu17unpack_etc2_eac_rEPKvPNS_10color_rgbaEj(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6basisu18unpack_etc2_eac_rgEPKvPNS_10color_rgbaE(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %20, %2
  %8 = load i32, ptr %5, align 4, !tbaa !9
  %9 = icmp ult i32 %8, 2
  br i1 %9, label %11, label %10

10:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %23

11:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %"struct.basisu::etc2_eac_rg11", ptr %12, i32 0, i32 0
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds [2 x %"struct.basisu::etc2_eac_r11"], ptr %13, i64 0, i64 %15
  store ptr %16, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %5, align 4, !tbaa !9
  call void @_ZN6basisu17unpack_etc2_eac_rEPKvPNS_10color_rgbaEj(ptr noundef %17, ptr noundef %18, i32 noundef %19)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %20

20:                                               ; preds = %11
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = add i32 %21, 1
  store i32 %22, ptr %5, align 4, !tbaa !9
  br label %7, !llvm.loop !11

23:                                               ; preds = %10
  ret void
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN6basisu17unpack_etc2_eac_rEPKvPNS_10color_rgbaEj(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6basisu18unpack_etc2_eac_rgEPKvPNS_10color_rgbaE(ptr noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  tail call void @_ZN6basisu17unpack_etc2_eac_rEPKvPNS_10color_rgbaEj(ptr noundef %0, ptr noundef %1, i32 noundef 0)
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @_ZN6basisu17unpack_etc2_eac_rEPKvPNS_10color_rgbaEj(ptr noundef nonnull %3, ptr noundef %1, i32 noundef 1)
  ret void
}

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" }

!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,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass