; LLVM IR from kroitor/gjk.c :: gjk (subtract)

; 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._vec2 = type { float, float }

; Function Attrs: nounwind uwtable
define dso_local <2 x float> @subtract(<2 x float> %0, <2 x float> %1) #0 {
  %3 = alloca %struct._vec2, align 4
  %4 = alloca %struct._vec2, align 4
  %5 = alloca %struct._vec2, align 4
  store <2 x float> %0, ptr %4, align 4
  store <2 x float> %1, ptr %5, align 4
  %6 = getelementptr inbounds %struct._vec2, ptr %5, i32 0, i32 0
  %7 = load float, ptr %6, align 4, !tbaa !5
  %8 = getelementptr inbounds %struct._vec2, ptr %4, i32 0, i32 0
  %9 = load float, ptr %8, align 4, !tbaa !5
  %10 = fsub float %9, %7
  store float %10, ptr %8, align 4, !tbaa !5
  %11 = getelementptr inbounds %struct._vec2, ptr %5, i32 0, i32 1
  %12 = load float, ptr %11, align 4, !tbaa !10
  %13 = getelementptr inbounds %struct._vec2, ptr %4, i32 0, i32 1
  %14 = load float, ptr %13, align 4, !tbaa !10
  %15 = fsub float %14, %12
  store float %15, ptr %13, align 4, !tbaa !10
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %3, ptr align 4 %4, i64 8, i1 false), !tbaa.struct !11
  %16 = load <2 x float>, ptr %3, align 4
  ret <2 x float> %16
}

; 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"="64" "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, !7, i64 0}
!6 = !{!"_vec2", !7, i64 0, !7, i64 4}
!7 = !{!"float", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{i64 0, i64 4, !12, i64 4, i64 4, !12}
!12 = !{!7, !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(none) uwtable
define dso_local <2 x float> @subtract(<2 x float> %0, <2 x float> %1) local_unnamed_addr #0 {
  %3 = fsub <2 x float> %0, %1
  ret <2 x float> %3
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable "min-legal-vector-width"="64" "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: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass