[llvm-bugs] [Bug 36400] New: llvm::DAGTypeLegalizer::ExpandIntRes_XMULO(llvm::SDNode*, llvm::SDValue&, llvm::SDValue&): Assertion `LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XMULO!"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36400

            Bug ID: 36400
           Summary: llvm::DAGTypeLegalizer::ExpandIntRes_XMULO(llvm::SDNod
                    e*, llvm::SDValue&, llvm::SDValue&): Assertion `LC !=
                    RTLIB::UNKNOWN_LIBCALL && "Unsupported XMULO!"'
                    failed.
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: ruttenberg at reservoir.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19874
  --> https://bugs.llvm.org/attachment.cgi?id=19874&action=edit
Reproducer

Reproduce with:

clang builtin-arith-overflow-17.c -O0 -S

test from gcc testsuite

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