; LLVM IR from drohmer/cgp :: library/cgp/06_mat/mat4/mat4.ll (ZN3cgpmLERNS_12matrix_stackIfLi4ELi4EEEf)

; 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"

; 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 noundef ptr @_ZN3cgp12matrix_stackIfLi4ELi4EE5beginEv(ptr noundef nonnull align 4 dereferenceable(64)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 4 dereferenceable(64) ptr @_ZN3cgpmLERNS_12matrix_stackIfLi4ELi4EEEf(ptr noundef nonnull align 4 dereferenceable(64) %0, float noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca float, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store float %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call noundef ptr @_ZN3cgp12matrix_stackIfLi4ELi4EE5beginEv(ptr noundef nonnull align 4 dereferenceable(64) %7)
  store ptr %8, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !11
  br label %9

9:                                                ; preds = %20, %2
  %10 = load i32, ptr %6, align 4, !tbaa !11
  %11 = icmp slt i32 %10, 16
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %23

13:                                               ; preds = %9
  %14 = load float, ptr %4, align 4, !tbaa !9
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load float, ptr %15, align 4, !tbaa !9
  %17 = fmul float %16, %14
  store float %17, ptr %15, align 4, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds float, ptr %18, i32 1
  store ptr %19, ptr %5, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %13
  %21 = load i32, ptr %6, align 4, !tbaa !11
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %6, align 4, !tbaa !11
  br label %9, !llvm.loop !13

23:                                               ; preds = %12
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret ptr %24
}

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 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 noundef ptr @_ZN3cgp12matrix_stackIfLi4ELi4EE5beginEv(ptr noundef nonnull align 4 dereferenceable(64)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 4 dereferenceable(64) ptr @_ZN3cgpmLERNS_12matrix_stackIfLi4ELi4EEEf(ptr noundef nonnull returned align 4 dereferenceable(64) %0, float noundef %1) local_unnamed_addr #0 {
  %3 = tail call noundef ptr @_ZN3cgp12matrix_stackIfLi4ELi4EE5beginEv(ptr noundef nonnull align 4 dereferenceable(64) %0)
  %4 = load <4 x float>, ptr %3, align 4, !tbaa !5
  %5 = insertelement <4 x float> poison, float %1, i64 0
  %6 = shufflevector <4 x float> %5, <4 x float> poison, <4 x i32> zeroinitializer
  %7 = fmul <4 x float> %4, %6
  store <4 x float> %7, ptr %3, align 4, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %3, i64 16
  %9 = load <4 x float>, ptr %8, align 4, !tbaa !5
  %10 = fmul <4 x float> %9, %6
  store <4 x float> %10, ptr %8, align 4, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %3, i64 32
  %12 = load <4 x float>, ptr %11, align 4, !tbaa !5
  %13 = fmul <4 x float> %12, %6
  store <4 x float> %13, ptr %11, align 4, !tbaa !5
  %14 = getelementptr inbounds i8, ptr %3, i64 48
  %15 = load <4 x float>, ptr %14, align 4, !tbaa !5
  %16 = fmul <4 x float> %15, %6
  store <4 x float> %16, ptr %14, align 4, !tbaa !5
  ret ptr %0
}

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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass