; LLVM IR from achilles288/robot-monitor-graphics :: src/base/math/mat3.ll (ZN3rmg4Mat3C2Ef)

; 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.rmg::Mat3" = type { %union.anon }
%union.anon = type { [3 x [3 x float]] }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3rmg4Mat3C2Ef(ptr noundef nonnull align 4 dereferenceable(36) %0, float noundef %1) unnamed_addr #0 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %9

9:                                                ; preds = %31, %2
  %10 = load i32, ptr %5, align 4, !tbaa !11
  %11 = icmp slt i32 %10, 3
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %34

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %14

14:                                               ; preds = %27, %13
  %15 = load i32, ptr %7, align 4, !tbaa !11
  %16 = icmp slt i32 %15, 3
  br i1 %16, label %18, label %17

17:                                               ; preds = %14
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %30

18:                                               ; preds = %14
  %19 = load float, ptr %4, align 4, !tbaa !9
  %20 = getelementptr inbounds %"struct.rmg::Mat3", ptr %8, i32 0, i32 0
  %21 = load i32, ptr %5, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [3 x [3 x float]], ptr %20, i64 0, i64 %22
  %24 = load i32, ptr %7, align 4, !tbaa !11
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [3 x float], ptr %23, i64 0, i64 %25
  store float %19, ptr %26, align 4, !tbaa !13
  br label %27

27:                                               ; preds = %18
  %28 = load i32, ptr %7, align 4, !tbaa !11
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %7, align 4, !tbaa !11
  br label %14, !llvm.loop !14

30:                                               ; preds = %17
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %5, align 4, !tbaa !11
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %5, align 4, !tbaa !11
  br label %9, !llvm.loop !16

34:                                               ; preds = %12
  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

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}


; 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: write) uwtable
define dso_local void @_ZN3rmg4Mat3C2Ef(ptr nocapture noundef nonnull writeonly align 4 dereferenceable(36) %0, float noundef %1) unnamed_addr #0 align 2 {
.preheader:
  %2 = insertelement <4 x float> poison, float %1, i64 0
  %3 = shufflevector <4 x float> %2, <4 x float> poison, <4 x i32> zeroinitializer
  store <4 x float> %3, ptr %0, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  store <4 x float> %3, ptr %4, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  store float %1, ptr %5, align 4, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass