; LLVM IR from drohmer/cgp :: library/cgp/06_mat/mat2/mat2.ll (ZN3cgp12matrix_stackIfLi2ELi2EE14build_identityEv)

; 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.cgp::matrix_stack" = type { %"struct.cgp::numarray_stack" }
%"struct.cgp::numarray_stack" = type { %"struct.cgp::numarray_stack.0", %"struct.cgp::numarray_stack.0" }
%"struct.cgp::numarray_stack.0" = type { float, float }

; Function Attrs: mustprogress uwtable
define dso_local { <2 x float>, <2 x float> } @_ZN3cgp12matrix_stackIfLi2ELi2EE14build_identityEv() #0 align 2 {
  %1 = alloca %"struct.cgp::matrix_stack", align 4
  call void @_ZN3cgp12matrix_stackIfLi2ELi2EEC1Effff(ptr noundef nonnull align 4 dereferenceable(16) %1, float noundef 1.000000e+00, float noundef 0.000000e+00, float noundef 0.000000e+00, float noundef 1.000000e+00)
  %2 = getelementptr inbounds %"struct.cgp::matrix_stack", ptr %1, i32 0, i32 0
  %3 = load { <2 x float>, <2 x float> }, ptr %2, align 4
  ret { <2 x float>, <2 x float> } %3
}

declare void @_ZN3cgp12matrix_stackIfLi2ELi2EEC1Effff(ptr, float, float, float, float)

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)"}


; 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"

%"struct.cgp::matrix_stack" = type { %"struct.cgp::numarray_stack" }
%"struct.cgp::numarray_stack" = type { %"struct.cgp::numarray_stack.0", %"struct.cgp::numarray_stack.0" }
%"struct.cgp::numarray_stack.0" = type { float, float }

; Function Attrs: mustprogress uwtable
define dso_local { <2 x float>, <2 x float> } @_ZN3cgp12matrix_stackIfLi2ELi2EE14build_identityEv() local_unnamed_addr #0 align 2 {
  %1 = alloca %"struct.cgp::matrix_stack", align 8
  call void @_ZN3cgp12matrix_stackIfLi2ELi2EEC1Effff(ptr noundef nonnull align 4 dereferenceable(16) %1, float noundef 1.000000e+00, float noundef 0.000000e+00, float noundef 0.000000e+00, float noundef 1.000000e+00)
  %.fca.0.load = load <2 x float>, ptr %1, align 8
  %.fca.0.insert = insertvalue { <2 x float>, <2 x float> } poison, <2 x float> %.fca.0.load, 0
  %.fca.1.gep = getelementptr inbounds i8, ptr %1, i64 8
  %.fca.1.load = load <2 x float>, ptr %.fca.1.gep, align 8
  %.fca.1.insert = insertvalue { <2 x float>, <2 x float> } %.fca.0.insert, <2 x float> %.fca.1.load, 1
  ret { <2 x float>, <2 x float> } %.fca.1.insert
}

declare void @_ZN3cgp12matrix_stackIfLi2ELi2EEC1Effff(ptr, float, float, float, float) local_unnamed_addr

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,GlobalOptPass,InferAlignmentPass,InstCombinePass,SROAPass