83 lines
2.8 KiB
LLVM
83 lines
2.8 KiB
LLVM
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; ModuleID = 'recursion.c'
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source_filename = "recursion.c"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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@In = external global i32, align 4
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; Function Attrs: nofree nosync nounwind readnone sspstrong uwtable
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define dso_local i32 @fib(i32 %0) local_unnamed_addr #0 {
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%2 = icmp ult i32 %0, 2
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br i1 %2, label %9, label %3
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3: ; preds = %1
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%4 = add nsw i32 %0, -1
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%5 = call i32 @fib(i32 %4)
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%6 = add nsw i32 %0, -2
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%7 = call i32 @fib(i32 %6)
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%8 = add nsw i32 %7, %5
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br label %9
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9: ; preds = %1, %3
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%10 = phi i32 [ %8, %3 ], [ 1, %1 ]
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ret i32 %10
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}
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; Function Attrs: nofree nosync nounwind readnone sspstrong uwtable
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define dso_local i32 @kalle(i32 %0) local_unnamed_addr #0 {
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%2 = icmp slt i32 %0, 1
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br i1 %2, label %8, label %3
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3: ; preds = %1
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%4 = icmp eq i32 %0, 1
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br i1 %4, label %8, label %5
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5: ; preds = %3
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%6 = add nsw i32 %0, -2
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%7 = call i32 @kalle(i32 %6) #2
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br label %8
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8: ; preds = %5, %3, %1
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%9 = phi i32 [ 0, %1 ], [ %7, %5 ], [ 1, %3 ]
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ret i32 %9
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}
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; Function Attrs: nofree nosync nounwind readnone sspstrong uwtable
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define dso_local i32 @anka(i32 %0) local_unnamed_addr #0 {
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%2 = icmp slt i32 %0, 1
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br i1 %2, label %6, label %3
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3: ; preds = %1
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%4 = add nsw i32 %0, -1
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%5 = call i32 @kalle(i32 %4)
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br label %6
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6: ; preds = %1, %3
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%7 = phi i32 [ %5, %3 ], [ 1, %1 ]
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ret i32 %7
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}
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; Function Attrs: nofree nounwind sspstrong uwtable
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define dso_local void @main() local_unnamed_addr #1 {
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%1 = call i32 @fib(i32 10)
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store volatile i32 %1, i32* @In, align 4, !tbaa !5
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ret void
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}
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attributes #0 = { nofree nosync nounwind readnone sspstrong uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #1 = { nofree nounwind sspstrong uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
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attributes #2 = { nounwind }
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!llvm.module.flags = !{!0, !1, !2, !3}
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!llvm.ident = !{!4}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"PIC Level", i32 2}
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!2 = !{i32 7, !"PIE Level", i32 2}
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!3 = !{i32 7, !"uwtable", i32 1}
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!4 = !{!"clang version 13.0.1"}
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!5 = !{!6, !6, i64 0}
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!6 = !{!"int", !7, i64 0}
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!7 = !{!"omnipotent char", !8, i64 0}
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!8 = !{!"Simple C/C++ TBAA"}
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