; LLVM IR from cvra/robot-software :: lib/trace (trace)

; 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.trace_event = type { i32, %union.anon }
%union.anon = type { ptr }

@.str = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @trace(i8 noundef zeroext %0) #0 {
  %2 = alloca i8, align 1
  %3 = alloca %struct.trace_event, align 8
  store i8 %0, ptr %2, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 16, ptr %3) #2
  %4 = load i32, ptr %3, align 8
  %5 = and i32 %4, -769
  %6 = or i32 %5, 0
  store i32 %6, ptr %3, align 8
  %7 = getelementptr inbounds %struct.trace_event, ptr %3, i32 0, i32 1
  store ptr @.str, ptr %7, align 8, !tbaa !5
  %8 = load i8, ptr %2, align 1, !tbaa !5
  call void @trace_push_event(i8 noundef zeroext %8, ptr noundef %3)
  call void @llvm.lifetime.end.p0(i64 16, ptr %3) #2
  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: nounwind uwtable
declare hidden void @trace_push_event(i8 noundef zeroext, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; 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.trace_event = type { i32, %union.anon }
%union.anon = type { ptr }

@.str = external hidden unnamed_addr constant [1 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @trace(i8 noundef zeroext %0) local_unnamed_addr #0 {
  %2 = alloca %struct.trace_event, align 8
  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %2) #2
  store i32 0, ptr %2, align 8
  %3 = getelementptr inbounds i8, ptr %2, i64 8
  store ptr @.str, ptr %3, align 8, !tbaa !5
  call void @trace_push_event(i8 noundef zeroext %0, ptr noundef nonnull %2)
  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %2) #2
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare hidden void @trace_push_event(i8 noundef zeroext, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = { mustprogress 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass