diff --git a/llvm/test/Transforms/SCCP/switch-indirectbr.ll b/llvm/test/Transforms/SCCP/switch-indirectbr.ll new file mode 100644 index 0000000000000..16ec0ad3dc973 --- /dev/null +++ b/llvm/test/Transforms/SCCP/switch-indirectbr.ll @@ -0,0 +1,83 @@ +; RUN: opt -S -passes=ipsccp < %s | FileCheck %s +; CHECK: switch i32 %state.0, label [[DEFAULT_UNREACHABLE:%.*]] [ +; CHECK: default.unreachable: +; CHECK-NEXT: unreachable + +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" + +@.str = private unnamed_addr constant [23 x i8] c"OP_1:(instruction=%d)\0A\00", align 1 +@.str.1 = private unnamed_addr constant [28 x i8] c"TERMINATE:(instruction=%d)\0A\00", align 1 + +; Function Attrs: mustprogress norecurse uwtable +define dso_local noundef i32 @main() #0 { +entry: + %bytecode = alloca [2 x ptr], align 16 + store ptr blockaddress(@main, %VM__OP_1), ptr %bytecode, align 16, !tbaa !5 + %arrayidx1 = getelementptr inbounds [2 x ptr], ptr %bytecode, i64 0, i64 1 + store ptr blockaddress(@main, %VM__TERMINATE), ptr %arrayidx1, align 8, !tbaa !5 + br label %while.body + +while.body: ; preds = %entry, %sw.epilog + %state.0 = phi i32 [ 0, %entry ], [ %state.1, %sw.epilog ] + %index.0 = phi i32 [ 0, %entry ], [ %index.2, %sw.epilog ] + switch i32 %state.0, label %sw.epilog [ + i32 0, label %sw.bb + i32 1, label %VM__OP_1 + i32 2, label %sw.bb4 + ] + +sw.bb: ; preds = %while.body + %idxprom = sext i32 %index.0 to i64 + %arrayidx2 = getelementptr inbounds [2 x ptr], ptr %bytecode, i64 0, i64 %idxprom + %0 = load ptr, ptr %arrayidx2, align 8, !tbaa !5 + br label %indirectgoto + +VM__OP_1: ; preds = %while.body, %indirectgoto + %index.1 = phi i32 [ %index.3, %indirectgoto ], [ %index.0, %while.body ] + br label %sw.epilog + +sw.bb4: ; preds = %while.body + %call = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %index.0) + %inc = add nsw i32 %index.0, 1 + %idxprom5 = sext i32 %inc to i64 + %arrayidx6 = getelementptr inbounds [2 x ptr], ptr %bytecode, i64 0, i64 %idxprom5 + %1 = load ptr, ptr %arrayidx6, align 8, !tbaa !5 + br label %indirectgoto + +sw.epilog: ; preds = %while.body, %VM__OP_1 + %state.1 = phi i32 [ %state.0, %while.body ], [ 2, %VM__OP_1 ] + %index.2 = phi i32 [ %index.0, %while.body ], [ %index.1, %VM__OP_1 ] + br label %while.body, !llvm.loop !9 + +VM__TERMINATE: ; preds = %indirectgoto + %call7 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %index.3) + ret i32 0 + +indirectgoto: ; preds = %sw.bb4, %sw.bb + %index.3 = phi i32 [ %inc, %sw.bb4 ], [ %index.0, %sw.bb ] + %indirect.goto.dest = phi ptr [ %0, %sw.bb ], [ %1, %sw.bb4 ] + indirectbr ptr %indirect.goto.dest, [label %VM__OP_1, label %VM__TERMINATE] +} + +; Function Attrs: nofree nounwind +declare noundef i32 @printf(ptr nocapture noundef readonly, ...) #1 + +attributes #0 = { mustprogress norecurse 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 = { nofree nounwind "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 18.0.0git (https://github.com/llvm/llvm-project.git 67782d2de5ea9c8653b8f0110237a3c355291c0e)"} +!5 = !{!6, !6, i64 0} +!6 = !{!"any pointer", !7, i64 0} +!7 = !{!"omnipotent char", !8, i64 0} +!8 = !{!"Simple C++ TBAA"} +!9 = distinct !{!9, !10, !11} +!10 = !{!"llvm.loop.mustprogress"} +!11 = !{!"llvm.loop.unroll.disable"}