53 lines
1.9 KiB
LLVM
53 lines
1.9 KiB
LLVM
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; ModuleID = 'fibcall.c'
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source_filename = "fibcall.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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; Function Attrs: nofree norecurse 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 sgt i32 %0, 1
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br i1 %2, label %3, label %14
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3: ; preds = %1
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%4 = add i32 %0, -2
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%5 = call i32 @llvm.umin.i32(i32 %4, i32 28)
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%6 = add nuw nsw i32 %5, 2
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br label %7
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7: ; preds = %3, %7
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%8 = phi i32 [ %12, %7 ], [ 2, %3 ]
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%9 = phi i32 [ %11, %7 ], [ 1, %3 ]
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%10 = phi i32 [ %9, %7 ], [ 0, %3 ]
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%11 = add nsw i32 %9, %10
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%12 = add nuw nsw i32 %8, 1
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%13 = icmp eq i32 %8, %6
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br i1 %13, label %14, label %7, !llvm.loop !5
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14: ; preds = %7, %1
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%15 = phi i32 [ 1, %1 ], [ %11, %7 ]
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ret i32 %15
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}
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; Function Attrs: nofree norecurse nosync nounwind readnone sspstrong uwtable
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define dso_local i32 @main() local_unnamed_addr #0 {
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ret i32 30
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}
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; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
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declare i32 @llvm.umin.i32(i32, i32) #1
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attributes #0 = { nofree norecurse 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 nosync nounwind readnone speculatable willreturn }
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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 = distinct !{!5, !6, !7}
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!6 = !{!"llvm.loop.mustprogress"}
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!7 = !{!"llvm.loop.unroll.disable"}
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