In my case, for a function having a default statement in switch i could see a BB with label as sw.default is created: switch i32 %0, label %sw.*default* [ ] sw.default: br label %sw.epilog
For a non-default switch statement function: switch i32 %1, label %sw.epilog [ ] On Fri, Jul 16, 2021 at 1:00 PM David Blaikie <dblai...@gmail.com> wrote: > LLVM IR switch instructions always have a default: > https://llvm.org/docs/LangRef.html#switch-instruction - that jumps over > the body of the switch. (when lowering C code to LLVM IR the default would > be put after the loop, and the breaks from any case statements would jump > over that default block) > > On Fri, Jul 16, 2021 at 12:34 PM Bella V via cfe-users < > cfe-users@lists.llvm.org> wrote: > >> Hello All, >> >> >> >> I'm trying to find whether SwitchInst has a default statement. I'm able >> to iterate through the case values using case_begin and case_end. If I try >> to detect default using case_default which returns an iterator which points >> to the default case. >> >> Code Example: >> >> case_default()->getCaseIndex() or case_default()->getSuccessorIndex() >> returns the same values for both default and non-default switch C code. >> >> >> Any suggestions to solve this problem? >> >> >> Regards. >> _______________________________________________ >> cfe-users mailing list >> cfe-users@lists.llvm.org >> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users >> >
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